Maintenance Management Fleet Health is secret of our Strength

Maintenance Management Fleet Health is secret of our Strength
Best Practices in Maintenance Management Fleet Health is secret of our Strength

Fleet Maintenance in APSRTC
1st TIER At depots, preventive maintenance schedules, attention of running repairs, unit changes & fitness work and Coach work & Upkeep 2nd TIER At workshops - major overhaul of units & buses At Tyre Retreading shops - retreading and repair of tyres

Objectives of Fleet Maintenance
Preventive maintenance to vehicles for roadworthy fleet with good appearance, upkeep & comfort Punctuality Zero Accident Zero Breakdown & Zero Cancellation Minimum operational cost to earn profits Sustainability & growth of organization Lowest emission levels

INDICATORS OF EFFECTIVE FLEET MAINTENANCE
PARAMETER Target Upto Jan’12 1 HSD KMPL (Total) 5.17 5.30 5.13 HSD KMPL (Excl.Spl type) 5.26 5.40 2 Breakdown Rate 0.10 0.07 0.08 3 % Mech. Cancelation 0.23 0.11 0.19 4 Total Tyre Life 1.68 1.84 1.70 5 % New Tyre Scrap 2.37 1.30 3.17 6 New Tyre Mileage 62897 -- 67282 7 RT Factor 2.70 2.58 8 Lub KMPL 1117 1189 1174 9 Spring Consumption 78 50 55 10 Fleet Utilization 99.45 99.60 95.40

APSRTC has established very precise Preventive Maintenance Policies which are flexible in design and rigid in implementation. The Maintenance Policies are primarily designed based on the manufacturers’ recommendations, product duty cycles and application environment. The vehicles undergo preventive maintenance schedules at Depots with the material support from Zonal Stores, aggregates support from Zonal Workshops and Tyres from Tyre Retreading shops

Basic Requirements for Effective Fleet Maintenance
Manpower Tools, Plants & Machinery Spare Parts Fuel & Lub Unit aggregates Infrastructure – Yard, Sheds, Maintenance Pits, Illumination Computers & Software to Provide a Safe, Clean, Comfortable, Environment friendly, Reliable and Cost effective Bus for Operation

STANDARD DEPOT LAY OUT Security Vehicle dispatch Gentset Cycle stand
Oil Bunk DC(oils) Washing Plant Toilets Smithy Electrical Painter & Trimmer Tyres DC(T&P) Dining hall Stores MF/AMF room Maintenance Pits Sch-III/IV floor

Delegation of various responsibilities in a Depot Garage
Function Custodian/ Incharge Security of Premises, Property & assets Security SI/Head Guard & Security Guards in three shifts Indenting, Receipts, Issues & Accountal of HSD Oil & Lubricants Depot Clerk & Asst.Depot Clerk (Oils) Tools, Plants & Equipment Depot Clerk/ Asst.Depot Clerk (T&P) Tyres indenting, Receipt, issues & Accountal Asst. Depot Clerk (Tyres) Stores & Inventory Stores Supervisor & Asst.Depot Clerk (Stores) Shift Maintenance Superintendent(Mech)/ Dy.Supdt (M)/Leading Hand General Shift Superintendent (M)/ Dy.Supdt(M) Maintenance of records, documentation & correspondence Asst.Depot Clerk (Gen)

HSD OIL DISPENSING STATION & WASHING PLANT

SCHEDULE-I/II MAINTENANCE GARAGE

PITS FOR VEHICLE INSPECTION & MAINTENANCE

TYPICAL SCHEDULE-III/IV MAINTENANCE GARAGE

OVERHAULING ACTIVITIES AT WORKSHOPS
There are 7 workshops situated at Uppal, Karimnagar, Vijayawada, Vizianagaram, Kadapa, Nellore and Tirupathi The main functions of Workshops are : i) Complete Overhauling of Buses. ii) Sundry repairs of Buses. iii) Reconditioning of aggregates like Engine, Gear box, Front Axle, Rear Axle, FIP etc, and supply to depots on counter exchange basis.

Zonal workshops - Uppal

Zonal workshops – Engine Section
Zonal workshops – Body Section

Tyre Retreading Shop

Tyre Retreading Process

Preventive Maintenance Schedules adopted at Depots
No Maintenance Schedule Periodicity of Maintenance District Operation City Operations 1 Sch-I Daily 2 Sch-II Weekly 3 Sch-III 12,000 Kms for Ord 15,000 kms for New & special type 9,000 Kms for all 12,000 kms for New 4 Sch-IV 36,000 Kms for Ord 45,000 kms for New 27,000 Kms for all 36,000 kms for New 5 F.C. Attention Initially after 2 yrs of commissioning & annually thereafter

Oil, Filter & Coolant changes
Description of Lubricant LEYLAND TATA Engine Oil Long Life CH4 36,000 for Dist 24,000 for City 36,000 (18,000 for Cummins) Engine oil other than CH4 15,000/ 16,000 18,000 Gear Box oil Ordinary 32,000 Gear Box oil Extra Long life 40,000 72,000 Differential oil Ordinary Differential oil Extra long life 48,000 P.Steering oil & Filter 80,000 Clutch Kits & Clutch Fluid Coolant 75,000 3.00 lakhs (or) 2Yrs Contd..

Filter Changes Description of Filter LEYALND TATA Fuel Filter Felt
20,000 27,000 Fuel Filter Paper 30,000 & 20,000 for BS-II 36,000 & 18,000 for BS-II Spinon Fuel filters 25,000 BS-II 18,000 TC Fuel Strainers (Baby filters) 50,000 clean at 9,000 Dry Air Filter element Primary 72,000 Dry Air Filter element Secondary 2,16,000

In addition to the above certain periodical works like Refurbishing of Special type vehicles, Chemical washing of Seats are also incorporated in the Preventive maintenance programmes

Programming of Preventive Maintenance Schedules at Depots
The advance planning of vehicles for various preventive maintenance activities is obtained through computer software called “Vehicle Maintenance System” (VEMAS). The due dates, done dates and coverage of Kms etc for all types of maintenance activities are generated by VEMAS

A typical VEMAS based report

Sch-I Maintenance Schedule-I or Daily Maintenance is carried out in two shifts. All the vehicles after completion of the scheduled operation undergo Sch-I Maintenance. Sweeping, Cleaning & Washing of buses, Arresting leakages of water, fuel, oils, replenishing the levels, tightening of all bolts and nuts, Checking of road springs & their mountings, Rectification of defects pointed out by Drivers, Inspection of Tyres and minor coach works are taken up in Sch-I. The works allotted & works attended in Sch-I are recorded by the Shift Incharge Supervisor duly obtaining the Signatures of the concerned.

Vehicle Back History Register
Date Complaints on the condition of vehicle Failures Remarks of the Supervisor who supervised the repairs/ maintenance Signature of AE/ DM As per logsheet Tyre Mech. Observation VBH register is a very important register in maintenance management. It gives complete picture of the health of the vehicles. The repetitive nature of complaints depicts the quality of scheduled maintenance at the depot. The vehicle defects shall be thoroughly reviewed by the Sch-III/IV maintenance incharge before docking the vehicle and ensure that root cause for the defect is totally eliminated during Sch-III/IV maintenance.

Sch-II Maintenance Every vehicle undergoes Sch-II Maintenance once in a week (Excluding those undergone Sch-III/IV) for about 2-3 hours In addition to all the activities of Sch-I, the following works are taken up in Sch-II Complete washing through MWP Lubricating all grease points Cleaning of Breathers Air Cleaner maintenance Battery Maintenance Tyres rotation Steering & Brake test

Sch-III & IV Maintenance
Sch-III/IV Maintenance is carried out based on the prescribed mileage. The vehicle is docked for 8 hrs in General shift. One senior most Supervisor is deployed at each depot to look after Sch-III/IV maintenance. Two Mechanics & Two assistants for Sch-III and Three Mechanics & 3 Assistants for Sch-IV are deployed per vehicle in addition to the Artisans. All major repair & maintenance works are carried out in Sch-III/IV maintenance. The vehicles are inspected before docking & after completion to ensure quality The workdone along with signature of the concerned are recorded in a register

Important aspects while docking the vehicles for Sch-III/IV
Take up the vehicle for maintenance at the right time. Avoid delay/backlog. Inform the fixed Drivers about docking of vehicles for Sch-III/IV. Ensure thorough washing/MWP before docking. Synchronize other maintenance activities like FC, Unit changes, Filter/Oil/Coolant changes, Body attention, Painting etc with Sch-III/IV to save manpower & vehicle days

Important Coach works covered during Sch-III/IV
Tightening of all Body U’bolts, cabin foundation bolts. Repairs to damaged body panels, exterior & interior roof panels, parcel racks, Luggage carrier, ladder & unloader Repairs to Stepwell, stanchions, Passenger Assist rails, Driver partition, flooring, Dashboard, Engine hood, Entrance door & Driver’s door Dicky doors, locks and gas springs in Special type vehicles Contd..

Important Coach works covered during Sch-III/IV
Repairs to broken pillars & cross bearers Attention to Destination frames & boards Replacement/ repairs to broken seat frames, torn seat cushions & upholstery Attention to Seats inclining mechanism, Hand rests, foot rests, pouches, bottle holders etc in special type vehicles Attention to Driver Seat and adjusting mechanism Contd..

Attention to Antisag bar & out riggers
Replacement of damaged window frames, broken shutter glasses, windscreen glasses. Replacement of terene felt, fitment of shutter knobs Attention to battery box Arresting water leakages Exterior/ Interior paint touch up

Manpower Planning for Preventive Maintenance at Depots

Manpower planning is an essential prerequisite in Depot Maintenance
Head Office communicates sanctions for each category of manpower by working out the requirement based on the average schedules operated by an unit during the period from July to December. The requirement of Supervisors and Artisans is worked out based on the slabs in schedules. The arrived norm based on the slabs is generally adopted for staff requirement at depots Filling of vacancies either through direct recruitment or through promotion is strictly based on sanctions only

The success of Depot Maintenance management primarily depends on proper deployment of manpower and effective utilization of their services Highly skilled and experienced men shall be deployed in major maintenance programmes like Sch-III/IV, H.R.G and KMPL works. Senior most supervisor of the Depot next to Maintenance Incharge shall be assinged to look after of General Shift maintenance.

Depot Slabs for Supervisors & Artisans
Category up to 44 45 to 49 50 to 54 55 to 59 60 to 64 65 to 69 70 to 74 75 to 79 80 to 84 85 to 89 90 to 94 95 to 99 100 to 109 120 to 149 150 & Abv AE(M) 1 SUPDT(M) 2 DY.SUP(M) LH 3 4 CB/PB TYRE MECH 5 ELEC AC/DC PAINTER WELD/T.S TRIMMER B.SMITH H.MAN

Typical Man Power Deployment for maintenance in a Depot with 100 fleet
Category Norm Men Mechanical Foreman 0.049 1 Asst. Mechanical Foreman 2 Chargeman Leading Hands 0.037 4 Total Supervisors 0.086 9 Mechanics 0.35 35 Helpers/ Shramiks 0.50 50 Artisans 0.21 21 Total 1.15 115

Deployment of Mechanics & Helpers for maintenance in a Depot with 100 fleet
Activity Mechanics @ Norm 0.35 Helper/ Shramik @ Norm 0.50 Sch.I Maintenance 16 18 Sch.II Maintenance 4 Sch.III/IV Maintenance 9 10 Heavy Repairs 1 KMPL Attention 2 Oil changes Vehicle Dispatch 3 Tyres preparation DGT & Stores Battery maintenance HSD oil top-up Total 35 50

Deployment Artisans for maintenance in a Depot with 100 fleet
Category Norm Men Coach Bulider 0.039 4 DC/AC Electrician 0.047 5 Tyre Mechanic 0.034 3 Welder/ Tinsmith 0.010 1 Trimmer 0.024 2 Painter Blacksmith 0.022 Hammerman Total 0.21 21

Manpower deployment for shift maintenance
Deployment of manpower for Sch-I/II maintenance shall be done carefully keeping the number of vehicles to be maintained in each shift into consideration The allocation of man power should match the buses to be maintained in that shift based on bus schedules. Allocation of manpower dis- proportionate to the number of buses will lead to underutilization of men and ineffective maintenance Care shall be taken to ensure adequate manpower during night shifts as majority of the vehicles undergo Sch-I/II maintenance during this shift.

Outsourcing activities at Depots
In order to overcome shortage of manpower, and difficulties in filling of vacancies, APSRTC is outsourcing certain maintenance activities like Cleaning, sweeping & washing of Buses, HSD oil Top-up, Semi-skilled men as Assistant to Mechanics etc at Depots for smooth maintenance of vehicles.

Outsourcing activities at Depots
It is equally important for Supervisors to monitor the deployment of men by the outsourcing agencies and their quality of work. It is the responsibility of the Supervisors to ensure proper work allocation to the outsourced men. Supervisors shall also ensure the safety of the workers engaged through outsourcing The records of attendance, details of work done etc, pertaining to outsourcing shall be maintained properly by the Supervisor concerned.

Tools, Plants & Machinery

Provision of required tools, plants and equipment for smooth maintenance of vehicles is of highest importance in Depot Maintenance management. Depot Clerk is the custodian of all Mechanic tools, special tools, plants and machinery available in the Depot. The ‘T&P Return’ shall be maintained properly indicating the locality of each & every item of the Garage.

Important T&P required for smooth maintenance
No Description Expected life in Years 1 D.G.Set 20 2 Air Compressors 15 3 Car washers 7 4 Automatic Washing Plant 5 Arc Welding M/c 6 Gas Welding equipment 8 HP Greasing equipment 10 Bucket type Grease Gun 9 Jib Crane Trolley Jack 11 Bench Vice 12 Bench Grinder Contd..

No Description Expected life in Years 13 Drilling M/c 10 14 Sewing M/c 15 Pop rivet guns 5 16 Paint Spray gun 17 Battery Charger 18 Cell Tester 3 19 Hydrometer 20 Injector Tester 21 Wall gauges 22 Electronic gauges 23 Hand grinding M/c 7 24 Mechanic’s work bench Contd..

S.No Description Expected life in Years 25 Hand Platform Trolley 10 26 Bench Arbor Press 27 Anvil 28 Torque Wrench 5 29 Swage Block 30 Vehicle Stands 31 Compressor Tester Well Pump 7 33 Automatic Tyre inflators 34 Ralli-wolf end mill kit 35 Dial gauge with magnetic base 36 Spring Cambering M/c 37 Diamond Glass cutter 38 Smoke Meter

A separate Log book is maintained for each plant & machinery and the entries are made in the Log book as and when repairs and maintenance are carried out. It is the responsibility of Mechanical Supervisors to ensure preventive maintenance to the Plants & Equipment at the prescribed intervals

The Mechanical Supervisors ensure periodical calibration of certain T&P items like Dial gauges, Injector testers, Wall gauges, Torque wrenches etc, as per the stipulated periodicity. The worn out and defective T&P are replaced in time so that the work is not hampered. Additional requirement of T&P owing to increased number schedules or introduction of new models are submitted to the Dy.CME concerned for obtaining the same.

Mechanic Tools for TATA Depots
D.E.Flat Ring Tubular Socket 6x7 mm 6 x 7 mm 8 x 9mm 10mm 8x9 mm 10 x 11 mm 10x11 mm 13mm 8x10 mm 12x 13mm 12x13 mm 14mm 9x10 mm 17x19 mm 12x14 mm 17mm 21 x 23 mm 19mm 10x13 mm 22 x 24 mm 22mm 12x 14 mm 27 x 32 mm 24mm 14x17 mm 41 x 46 mm 27mm 3/8’’ Other Tools 55mm single end Flat Tommy bar 125mm long Tommy bar 250mm long Extension 6 Extension 12" Cutting Plier 8" Cutting plier 10” Hammer Ball pane 1/2Kg. File round smooth 8" File flat smooth 6" Feeler Gauge Set Torque wrench (4 to 20 m-Kgs) Circlip Plier 6’’ Screw Driver 6’’ & 12’’ Nose Plier 6’’

Mechanic Tools for LEYLAND Depots
D.E.Flat Ring Socket 3/16’’x1/4’’ ½’’ ¼’’x5/16’’ 10mm 5/16’’x3/8’’ 11mm 7/16’’x1/2’’ 12mm 9/16’’ x 5/8’’ 13mm 11/16’’x3/4’’ 14mm 6 x 7mm 17mm 8 x 9mm 19mm 10 x 11mm 21mm 12 x 13mm 22mm 14x 15mm 24mm 16 x 17mm 46mm 18 x 19mm 20 x 21mm 22 x 23mm 24 x 27mm Other Tools 55mm single end Flat wrench Tommy bar 125mm long Tommy bar 250mm long Extension 6 Extension 12" Cutting Plier 8" Cutting plier 10” Hammer Ball pane 1/2Kg. File round smooth 8" File flat smooth 6" Feeler Gauge Set Torque wrench (4 to 20 m-Kgs) Circlip Plier 8’’ Screw Driver 8’’ & 12’’ Nose Plier 6’’ Mallet Allen Key set

Fast moving Mechanic Tools
ASHOK LEYLAND TATA DE Ring Socket 10 x 11 14 x 15 12,13 19 x 22 14, 17 8 x 9 19 BSF 3/16” X ¼” 5/16 X 3/8” Feeler gauge DE Ring Socket 17 x 19 9, 10 13 x 14 13, 14 19 x 22 17, 19 9 x 10 Feeler Gauge

Special tools for Tata vehicles
Crow foot spanner for cylinder Head Nut tightening with rocker assembly Check nut spanner on front hub Check nut spanner on rear hub Front Hub puller Rear Hub Puller Water pump flange puller Drift for oil seal on Hub (outer) Steering ball joint puller Drift for oil seal on hub (inner) Holders for coupling flange Drift for removal of Rear hub inner oil seal Puller for clutch release bearing Adopter for checking engine compression Puller for spigot bearing in crank shaft Puller for C.J. Bearing Puller for Rear hub Bearing outer race Puller for water pump inner bearing Drift for oil seal in timing case Spanner for wheel nut Socket wrench for removal of Injectors Piston ring compressor Strap wrench for Spin-on filters

Special tools for Leyland vehicles
Retainer for Liners (for Hino) Cylinder Head Bolt wrench (for Hino) Cylinder liner puller Injector Extractor Piston Ring Compressor Drift King Pin bush bottom Drift King Pin Bush bottom Centre bearing Nut Spanner Puller steering wheel Spanner set rocket shaft Spanner spring clamp nut Clutch alignment tool Clutch Height setting gauge (Z-gauge) Dial gauge (for hub setting with Magnetic base) Strap wrench for Spin-on filters Drop arm puller ZF Drop arm puller Rane Drift for Rear hub oil seal Drift for F.Hub inner bearing Drift for Bearing outer race Rear Hub nut spanner Front Hub nut Spanner Guide F.Hub inner bearing Puller Stub axle inner brg

Delegation of Powers Pertaining to T&P
S.No Nature of Power Authority Extent of powers 32.i) Standardization of depot equipment, inclusion of new items, fixation of norms, classification of T&P value-wise fixation of guidelines, expectancy etc MD Full powers with the concurrence of FA/CAO on the recommendations of ED(E)/CCOS/CME/ CFM ii) Inclusion of new equipment on experimental basis ED(E) Powers upto Rs 1.00 lakh per occasion with the concurrence of FA/CAO CME Powers upto Rs 50,000 per annum with the concurrence of Dy.CAO WM/ Dy.CME Powers upto Rs 10,000 per annum with the concurrence of Dy.CAO Contd..

S.No Nature of Power Authority Extent of powers 33.i) Sanction for replacement of T&P equipments including premature replacements at Depots/ W.shops CME/ ED(Z) Full powers on the recommendations of Dy.CME/ WM with the concurrence of DyCAO ii) Sanction for replacement of T&P items after their normal utilization for Depots/ W.shops as per guidelines issued from time to time DyCME/ WM Full powers with concurrence of DyCAO DM Powers upto Rs 300/- at a time subject to a limit of Rs 2,000 per annum Contd..

S.No Nature of Power Authority Extent of powers 34.i) Sanction for replacement of T&P equipments for New Depots/ W.shops ED(Z)/ CME Full powers as per guidelines ii) Sanction of additional T&P for existing Depots/ W.shops on account of increase in Fleet stength/ acitivity as per guidelines CME/ DyCME/ WM Full powers with concurrence of CFM/ DyCAO as per guidelines DM Powers upto Rs 300/- at a time subject to a limit of Rs 2,000 per annum Contd..

S.No Nature of Power Authority Extent of powers 35 Sanction the expenditure incurred for overhaul repairs and maintenance of tools, plant & machinery and replacement of parts thereof in Depots & production units and entering into contract with authorized suppliers or manufacturers ED(E) Full powers with concurrence of FA/CAO CME/ ED(Z) Full powers with concurrence of CFM/ DyCAO upto Rs 20,000 at a time SSO Full powers upto Rs 5,000 at a time with concurrence of Dy.CAO JSO Upto Rs 1,500 at a time

FLOAT UNITS

Float aggregates are essential resource inputs for depot maintenance.
The purpose of providing float aggregates is to make available important units readily available at the depots at all times so that the defective units are replaced immediately and the vehicles are put onroad. Inadequacy/ non-availability of float units affect the Fleet utilization, punctuality of operations and earning potentiality of a depot. Over-provisioning of floats leads to excessive inventory lock-up

The requirement of Float aggregates depends on the volume of operations, lead time of supply and the average life of the aggregates. The Mechanical Engineering Department, from time to time; decide the list of float aggregate units to be provided to the depots. Floats are also provided for Workshops as an in-process inventory for uninterrupted supply to the depots and maintain optimum service levels.

No.of Float aggregates = (N/n - C) x t x a
The following formula is adopted in assessing the requirement of floats for a depot. No.of Float aggregates = (N/n - C) x t x a (Subject to a minimum of 1) Where, N = Operated Kms n = average life of aggregate in Kms t = Lead time replenishment in days which is the period that elapses between the day of removal of defective unit to the day of replacement being received from workshops or the day of completion of repair in the depot if such repair is within the permissible repairs of depot. C = Complete overhauls demand per day a = Number of units per vehicle

Provisioning of Float Units to Depots
MAJOR UNITS S.No UNIT NORM 1 Engine 1 for 10,000 KMs. 2 Front Axle 1 for 14,000 KMs. 3 Rear Axle 4 Gear Box 1 for 8,500 KMs. 5 Steering Box 6 FIP 1 for 5,000 KMs. 7 Self Starter 1 for 4,000 KMs 8 Alternator 1 for 4,000 KMs.

SUB ASSEMBLIES S.No UNIT NORM 1 Injectors (set) 1 for 2,000 KMs. 2 P. P. Shafts (set) 1 for 6,000 KMs. 3 Air compressor 1 for KMs. 4 Clutch pressure plate 1 for 5,000 KMs. 5 (Leyland)/ Springer (Tata) 6 Water pump assembly 7 Cylinder head assembly 8 Radiator

MAJOR SPARES S.No UNIT NORM 1 Front hub 1 for 15,000 KMs. 2 Rear hub 3
Clutch housing 4 Air cleaner complete 1 for 5,000 KMs. 5 Fuel twin filter assembly 6 Feed pump 7 Fly wheel ring gear 1 for 10,000 KMs. 8 Unloader valve 1 for 3,000 KMs. 9 Set (4) of slack adjusters 10 Set (4) of spring brake chambers 11 Hand brake valve 12 A. C. Head

MAJOR SPARES S.No UNIT NORM 13 Air tank 1 for 10,000 KMs. 14
Clutch disc 1 for KMs. 15 U. J. Cross 1 for 6,000 KMs. 16 Set of brake drums front (2 off) 1 for 5,000 KMs. 17 Set of brake drums rear (2 off) 18 Set of spring brackets front (2 off) 19 Set of spring brackets rear (2 off) 20 Axle shafts 2 off 21 H. S. D. Oil Tank 22 Wiper Machine 23 Batteries 10% of the batteries 24 Hydraulic jacks 1 for 2,000 KMs.

All depots send a periodical statement on availability of floats to the concerned Dy.CME once in a year. The Dy.CME of the region reconciliates figures with those maintained by workshops. The Dy.CME concerned processes cases for provision of floats for new models and also for increase of floats on account of increase in schedules, duly recommending the surrender of obsolete models.

Provision of Spare Vehicles to Depots
Spare vehicles are provided to the Depots to meet the requirements for docking the vehicles for preventive maintenance (Sch.III/IV), FC attention, Complete overhauls, Sundry repairs, Units replacement etc,. Norm for Provision of Spare Buses Fleet Held Norm Upto 50 8% 51 to 80 7% 81 & above 6%

Physical Inspection of Buses by Depot Manager & Maintenance Incharge
The Depot Manager shall inspect atleast 30 vehicles (1/3rd Fleet) every month covering 15 vehicles undergone Sch-II maintenance, 10 vehicles undergone Sch-III and 5 vehicles undergone Sch-IV maintenance. This is highly essential to ensure effective execution of preventive maintenance schedules

Check-list for inspection of vehicles
S.No System Item 1 Engine Air cleaner maintenance 2 ,, A/c Suction hose 3 Engine mounting 4 Engine oil leakages 5 Fuel HSD tank cap seals 6 Fuel pipe clamping 7 Fuel leakages 8 Cooling Radiator Cap 9 Coolant concentration 10 Radiator mountings Contd..

Tie-rod/ drag link end play ,, ATF oil leakages King pin lubrication
S.No System Item 1 Steering Tie-rod/ drag link end play 2 ,, ATF oil leakages 3 King pin lubrication 4 Susp. Broken spring leaves 5 Spring side clamps/ ferrules 6 Welded side clamps 7 Spring brackets/ shackles 8 Air suspension mounting bolts Tightness 9 Condition of rubber bushes in Air suspension Contd..

System Item S.No 1 Transmission Clutch free play 2 ,, Gear lever play
3 Gear Box oil leakage 4 Loose CJ check nuts 5 CJ bearings condition 6 UJ Crosses condition 7 Sleeve yokes condition 8 CJ rubber beds condition 9 Slip joint Rubber boot 10 PP shafts alignment 11 Missing grease nipples 12 Chassis greasing 13 Differential oil leakage 14 Cleanliness of breathers

System Item Brakes Air tank condensate ,, Brake pipe clamps
S.No System Item 1 Brakes Air tank condensate 2 ,, Brake pipe clamps 3 Air leakage 4 Air Dryer working 5 Hand brake condition 6 Brake dust covers 7 Tyres Wheel alignment 8 Matching of duals 9 Less than 2mm NSD tyres Contd..

S.No System Item 1 Electrical Battery Maintenance 2 ,, Head Lights 3 Signal Lights 4 Self condition 5 Saloon Illumination 6 Body Exterior/ Interior cleanliness 7 Body damages 8 Painting 9 Seat Mounting 10 Seat Upholstery 11 Inclining mechanism 12 Shutter glasses 13 Doors 14 Window Shutter Knobs 15 Tightness of body U bolts 16 Under chassis cleanliness

Checklist for Body condition
Code Item Description Remarks EXT-1 Body Panels Dents, Scratches, Damages EXT-2 Front/ Rear Bumpers Broken/missing EXT-3 Front Grill Damages/ missing EXT-4 Front Cowls Damages EXT-5 Corner Domes Dents EXT-6 Passenger Doors EXT-7 Driver’s Door Damages/ locks EXT-8 Ladder EXT-9 Rear Luggage Booth (Dicky) EXT-10 Exterior Paint Faded EXT-11 Roof Leakage Area of Leakage DEST-1 Destination Board Frame Size and condition DEST-2 Destination Lettering/Paint DEST-3 Destination Board lighting Visibility DEST-4 LED Destination Condition

Code Item Description Remarks INT-1 Stepwell Damages INT-2 Flooring Condition INT-3 Stanchions Broken/missing/loose INT-4 Parcel Rack Broken/loose INT-5 Grab rails/ Assist rails INT-6 Cabin Partition door INT-7 Interior Roof/ side panel Fabric INT-8 Interior painting Faded INT-9 Saloon Cleanliness Dirt & cobwebs GLS-1 Window Glasses Missing/ Broken GLS-2 Terene felt/Flock channel Rubber Worn out/ missing GLS-3 Window shutter knobs Missing/loose GLS-4 Windscreen Glasses Broken GLS-5 Top-fixed glasses Broken/missing GLS-6 Windows leakage Condition of Rubber flap

Code Item Description Remarks SEAT-1 Seat Frames Loose/broken SEAT-2 Seat Cushions Hard/missing/damaged SEAT-3 Seat rexine/fabric Torn SEAT-4 Back rests Missing/loose SEAT-5 Reclining mechanism Condition SEAT-6 Arm Rests Broken/missing/loose SEAT-7 Head Rest Covers Missing/dirty SEAT-8 Bottle Holders Damged/missing SEAT-9 Magazine Pouches Damaged SEAT-10 Foot Rests CAB-1 Bonnet CAB-2 Dash Board CAB-3 Vision Mirrors CAB-4 Cabin Cleanliness Dirty

Code Item Description Remarks LHT-1 Interior Lightining Condition LHT-2 Head Lights LHT-3 Tail lights/ signal indicators SPL-1 Speakers SPL-2 TV/Audio System SPL-3 Cell phone chargers STR-1 Body U Bolts Loose/missing STR-2 Ballata Packing STR-3 Cabin Foundation Loose STR-4 Antisag Bar STR-5 Out Riggers STR-6 Battery Box Condtion

Indicators for Quality of Sch-III/IV maintenance
Backlog in Sch-III/IV maintenance and failures within 15 days after maintenance are the key indicators for Standards of preventive maintenance at the depot. Type Fleet Held Optd Kms Sch-III Failures within 15 days Due Done Backlog % Backlog Nos % ORD EXP Total Type Fleet Held Optd Kms Sch-IV Failures within 15 days Due Done Backlog % Backlog Nos % ORD EXP Total

Important Registers maintained in Preventive Maintenance Management
Daily RG Register RTC-126 Vehicle Back History RTC-109 Sch-I Maintenance RTC-127 Sch-II Maintenance RTC -128 Sch-III work done MTD -194 Preventive Maintenance Master register RTC-110 Unit changes register Register for Inspection of vehicles FC Register Breakdowns RTC-129 Cancellation of Kms RTC-130

Vehicle Replacement Policy
APSRTC replaces Mofussil buses at lakh kms and City Buses at lakh kms or 15 years (whichever is earlier) against scrap. Ghat Buses & Super Luxury buses are replaced at 5.50 lakh kms and Volvo Buses at lakh kms The other special type buses like Express, Deluxe, Metro Exp etc are replaced at lakh kms

Deployment of New Buses from 2010
Type (Jan’12) Aug. Rep. Total S.Luxury 137 109 246 57 778 835 Indra -- 8 61 69 Garuda/ Garuda+ 30 27 41 68 Deluxe 32 89 121 169 238 Express 274 330 604 174 904 1078 Pallevelugu 152 547 699 Sap.Express & Ord 123 150 22 79 City Ordinary 10 55 65 City Ord (CNG) 138 LF A/C Diesel 28 51 LF A/C CNG LF N-A/C Diesel 16 80 96 3 1 4 LF N-A/C CNG 33 SLF Diesel 75 118 193 9 SLF CNG 12 58 70 5 Mini Buses 52 48 653 937 1590 676 2751 3427

Use of Alternate fuels in APSRTC
Green initiatives & Use of Alternate fuels in APSRTC

APSRTC’s Environmental Concerns
APSRTC always takes lead in sharing the public concern on automobile pollution and climate change. APSRTC is a forerunner in introducing environment friendly vehicles through product upgradation and innovative measures especially in the area of alternate fuels and pollution control. Continued…

APSRTC’s Environmental Concerns
Sophisticated Electronic Smoke Meters are provided to Depots to check the smoke emission levels of buses at regular intervals. With a commitment towards mitigation of GHG emissions and reduction of smoke levels, APSRTC has started using Biofuels and Compressed Natural Gas on large scale. APSRTC installed 40 Wind Turbines to generate green power to an extent of 10 Mw of Electrical energy

APSRTC launched 100 CNG buses in Vijayawada City during the year 2006, which is first of its kind in South India. The number of CNG buses has been increased to 300 in Vijayawada. Introduced 120 CNG buses recently in Hyderabad which include Ultra Low Floor Buses with BS-III/IV compliant CNG rear Engine model is under progress. The Fuel efficiency of CNG buses in VJA is 4.40 km/kg and in Hyd it is 4.49 km/kg

Experiences with Biodiesel
As a stake holder in promoting the use of biofuels, APSRTC had promptly responded to the call given by the Govt. of Andhra Pradesh and started trials using Biodiesel blended fuel on one City bus, in June’2005. The vehicle was operated with B20 fuel for 8 months to assess the operational feasibility and performance in respect to fuel efficiency and emission reduction. Intermittently the vehicle was also operated with 100% HSD fuel for 2 months for comparison

Emission levels of Biodiesel Vehicle during trial period
Against the maximum permissible smoke density of 65 Hatridge units, the following emission levels were observed on the vehicle when operated with 20% Bio-diesel. Jun-05 41.3 Aug-05 35.4 Sep-05 36.2 Oct-05 32.6 Nov-05 35.0 Dec-05 11.8 Feb-06 25.0 Mar-06 11.7

Emission Levels of trial vehicle When operated with 100% HSD oil
During Trial period Before Trial Jul-05 33.3 Jan-06 34.0 Jan-05 35.0 Feb-05 32.6 Mar-05 11.2 Apr-05 37.3 May-05 45.4

Comparative Fuel Performance* of Vehicle during trials
With 100% HSD oil With Biodiesel Jul-05 4.627 Jun-05 4.355 Aug-05 4.538 Sep-05 4.662 Oct-05 4.778 Nov-05 4.430 Dec-05 4.516 Feb-06 4.797 Mar-06 5.008 Jan-06 5.193 * Fuel Performance in Kms/Lit

Extended trials with Biodiesel
The trial was extended to three more vehicles at the same Depot with 5%, 10% and 20% blends respectively. It was observed during the trials that the vehicle with 20% blend shown improvement in fuel efficiency by 0.27 Km/Lt. The trials were conducted with the Biodiesel supplied by M/S Southern Online Biotechnologies Limited.

Comparative Emission Levels Comparative Fuel Efficiency
Vehicle No Bend % Before Trials During Trials % Emission Reduction Mar 2006 Apr May Avg of three Months Jun Jul Aug months AP11Z 3845 5% 44.3 55 30.4 43.23 35.4 41 30.6 35.67 17.49 4045 10% 29.3 33.7 40.1 34.37 32.7 22.1 20.1 24.97 27.35 4037 20% 27.7 31.9 20.9 26.63 11.7 21.6 16.67 59.75 Comparative Fuel Efficiency Vehicle No Bend % Avg Km/Lit Before Trial During Trial % Improvement AP11Z 3845 5% 5.29 5.33 0.76% AP11Z 4045 10% 5.20 5.38 3.46% AP11Z 4037 20% 4.91 5.21 5.47%

Several firms like M/s Cleancities Bio-diesel India limited, M/S Naturol Bioenergy Limited and M/S Universal Biofuels Pvt. Limited have come forward to offer Bio-diesel for conducting wider trials. The trials were extended to other regions like Visakhapatnam and East Godavari, where all the vehicles of 4 depots were operated with Biodiesel blended in 1:9 ratio for about one month.

With the encouraging trial performance, Corporation has taken a decision to use Bio-diesel at 10% blend on regular basis for all vehicles in the 12 Depots of Hyderabad City Zone in the first phase by procuring the Bio-diesel from M/S Southern Online Biotechnologies Limited The supplier had installed a separate overhead tank for biodiesel storage and made necessary arrangements to mix the Biodiesel with the HSD oil in the fixed proportion.

In the second phase, tenders were floated in September 2009 for bulk procurement of Bio-diesel at an estimated quantity of 30 Million liters for regular blending at 129 Depots in 14 Regions. The supply contract was awarded to three firms viz, M/S Cleancities Bio-diesel India limited (108 Depots), M/S Southern Online Biotechnologies Limited (12 Depots) and M/S Universal Biofuels Pvt (9 Depots)

Biodiesel Stocking & Blending Arrangement at Depots
Dip Rod Tank Level Gauge Biodiesel Storage Tank 1 ½’’ MS Line 1’’ MS Line 1’’ Flexible Hose Underground HSD Oil Tank Truck with Biodesel Transfer Pump Ground Level

Procedure of Blending Biodiesel with HSD Oil
Blending Biodiese with HSD for first time Know the quantity of (Q1) of HSD in Ground Tank Calculate required qty (Q2) of blend with HSD (Q1x10/90) Transfer calculated qty (Q2) of Biodiesel from Storage tank by gravity using Flowmeter F1 Procedure for subsequent replenishments Ignore the quantity of B10 blend existing in the storage tank on fresh receipt of HSD oil Know the fresh quantity (Q3) of HSD that is being decanted into the underground tank Calculate the required quantity (Q4) of Biodiesel to mix by using the formula Q3 x 10/90 Transfer the quantity Q4 of Biodiesel from Storage tank to the Underground tank with the help of Flow meter F1

Reduction of Pollutants with B20 Fuel
The values with Pure HSD Oil Reduction with 20% Blended Bio-diesel Total Unburned Hydrocarbons 1.1gms/kwh 20% Carbon monoxide 4.5 gms/kwh 12% Particulate Matter 0.36 gms/kwh Oxides in Nitrogen 8 gms/kwh + 2% Sulphates -- Polycyclic Aromatic Hydrocarbons (PAH) 13% Nitrated PAHs 50% Ozone Potential Speculated Hydrocarbons 10%

Comparative Specifications of HSD & Biodiesel
Parameter ASTM Method Unit Pure Bio-Diesel Normal HSD Oil Flash Point D93 OC 130 min 66 min Water & Sediment D2709 % Volume 0.05 max Kinematic Viscosity 40oc D445 mm/Sec 1.9 – 6.0 2 - 5 Sulphated Ash D874 % mass 0.02 max 0.01 max Sulphur D5453 0.035 max Copper Strip Corrosion D130 No.3 max Not worse than No.1 Cetane Number D613 47 min 46 min Cloud Point D2500 Report Continued…

Comparative Specifications of HSD & Biodiesel
Parameter ASTM Method Unit Pure Bio-Diesel Normal HSD Oil Carbon Residue 100% Sample D4530 % mass 0.05 max 0.03 max on 10% Acid Number D664 mg KOH/gm 0.8 max -- Free Glycerin D6584 0.02 max Total Glycerin 0.24 max Phosphorus D4951 0.001 max Distillation Temp. Atmospheric Equivalent Temp 90% Recovered D1160 Degrees C 360 max

Some of the barriers in large scale application of Biodiesel
Availability and uninterrupted supply of biodiesel is a major constraint for large scale application in APSRTC. Very few firms have come forward to supply the Biodiesel in bulk quantity at a viable price It is difficult to assess the quality of the product at the user level There is scope for non-adherence to the prescribed specifications by the suppliers in the absence of required testing facilities. Contd…

It is difficult to send the samples to the laboratories too frequently.
The blending becomes uneconomical if the suppliers quote exorbitant prices due to monopoly Premature clogging of filters is more prevalent while using Biodiesel

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Maintenance Management Fleet Health is secret of our Strength

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