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Tow Plow Operators Training. Tow Plow Trailer snow plow designed to be towed with a truck and standard plow configuration – 25’ clearing path with a 12’

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Presentation on theme: "Tow Plow Operators Training. Tow Plow Trailer snow plow designed to be towed with a truck and standard plow configuration – 25’ clearing path with a 12’"— Presentation transcript:

1 Tow Plow Operators Training

2 Tow Plow Trailer snow plow designed to be towed with a truck and standard plow configuration – 25’ clearing path with a 12’ front plow Improve services by: – Providing faster results – Reducing cost for equipment, fuel and labor

3 Contact Time 12 total contact hours (required) – 8 hours Classroom, hands-on and closed driving course – 4 hours Dry-run (pre-winter) Experienced operator will drive to demonstrate proper procedures New operator will drive and be evaluated by experienced operator Checklist to be completed During storm check ride (optional) – No set amount of contact time As required by supervisor Experienced operator will drive to demonstrate proper procedures New operator will drive and be evaluated by experienced operator Release to operate the Tow Plow on decision of experienced operator Checklist to be completed during check ride

4 Course Objectives Identify Tow Plow key components Identify all safety hazards, terms and labels Perform a pre and post-trip inspection Describe preventative maintenance Identify and become familiar with all in-cab operator controls Demonstrate on a closed course the safe and proper Tow Plow operating procedures

5 Training This training will focus on standard configuration There are many different configurations based on district specific orders – Tow Plows may be outfitted with on or more of the following: 1000 gallon liquid chemical tank 8 cubic yard spreader – Become familiar with your Tow Plow – Train with equipment to be used – Train in area that the operator “typically” will be assigned to

6 Safety Become familiar with all operating characteristics prior to operation during a winter event Be aware of your surroundings Must be able to see the Tow Plow – Clean windows – Clean mirrors – In-cab adjustable mirrors – Supplemental night lighting

7 Safety and Warning Labels Become familiar with all safety warnings and labels – Replace labels when: Damaged Not legible In addition, become familiar with additional equipment on the Tow Plow including: – Spreader – Liquid chemical tank(s)

8 Lockout / Tagout All employees shall follow MoDOT’s lockout/tagout procedures prior to performing any work on the Tow Plow Control of hazardous energy shall be complied with under Section 2.7 The Control of Hazardous Energy (Lockout / Tagout) Follow manufacturer’s procedures – Tow Plow – Accessory equipment installed on the Tow Plow

9 Inspections Follow the manufacturer’s guidelines for the inspection and maintenance schedules Hydraulic fluid level on tow vehicle Inspect tires for damage, proper inflation and that all lug nuts are in place and have not become loose “STAY BACK 100 FEET” sign installed on rear of Tow Plow All safety and warning labels are in place and legible

10 Inspections Continued Visually inspect all hydraulic hoses and connectors for wear, damage, and leaks Check all cables, chains, and sheaves for excessive wear and damage Visually inspect all plow and wing units – Inspect cutting edge and shoes for excessive wear – Do not allow cutting edge to wear down into the mounting angle on the mold board

11 Inspections Continued Inspect mounting arms for excessive rust, damage, cracks in welds or bent and broken sections Inspect mounting holes on the arms and lugs for excessive wear – Mounting holes greater than 3/16” clearance are to be repaired Dump air from the brake storage tanks on tow vehicle and the Tow Plow to remove excessive moisture and ensure that the system air pressure returns and does not leak Add air brake drier to brake system to prevent air brake freezing during extremely cold weather

12 Lubrication Grease all required components – All plow harness sheave nipples – All hydraulic pump drive shaft nipples – Front and rear tower sheaves and swivel blocks – Wing extension arm nipples – Front and rear tower guide tracks – All front harness pivot points – Check for loose or missing fasteners (nuts, bolts, cotter pins, lock rings, etc.) Follow lubrication procedures for the Tow Plow and accessory equipment, such as spreaders Refer to the owner’s manual for specific intervals

13 Hydraulic Set-up Check hydraulic set-up prior to use – System pressure should be 2300 psi – Set hydraulic trims/flow for steering and mold board operation Ensure that Tow Plow response is: – Consistent – Smooth – Not too slow (may reduce reaction time for obstacles) – Not too fast (could cause handling issues and damage) – Include operator to ensure response is adequate to the operators preference and needs

14 Installation Standard Configuration – Connection of hydraulics and liquid chemicals for spreaders and liquid tanks may vary – Refer to your experienced Tow Plow operator or District General Services for additional requirements Attach Tow Plow to tow vehicle pintle hitch Pintle receiver locked Raise landing gear into full up position and handle stored in tow position Air brake lines/glad hands connected (no leaks) Connect Tow Plow safety chains Connect plow lift hydraulic circuit Connect steering hydraulic circuit 7 wire trailer plug installed and all Tow Plow lights operational 6 wire plug installed and all operator lights are operational Inspect all lighting for damage and proper operation

15 Operational Preparation Ensure brakes are released and not frozen – Gently pull against the Tow Plow with brakes released to ensure brakes are not frozen Remove mold board lock pins – Stand behind mold board – Start at center pins working out Installing mold board lock pins – Install for transport or when deployment is not required for extended duration – Stand behind mold board – Start with outside pins and work to center

16 Operational Check Perform operational check prior to leaving maintenance facility Steering (deployment and retraction) – Steering wheels move freely through full stroke of activating cylinder while moving forward Mold board (up and down) – Determine that the mold board moves freely from full up to full down

17 Deployment / Retraction Visually check to ensure that the Tow Plow is clear of traffic USE YOUR MIRRORS Do not deploy or retract while stopped to prevent damage to the Tow Plow’s tires Full deployment is not required to operate – Deploy to any desired position – Always deploy to a position that will clear all obstacles – Deployment (steering) and mold board functions (up and down) can be performed at the same time if desired

18 Deployment

19 Low Visibility Always retract the Tow Plow in low visibility conditions Always have plenty of sight distance Give yourself time to react and retract the Tow Plow for: – Stalled/stopped vehicles – Pedestrians – Roadway hazards – Obstacles – Guard rails, bridge ends and signs When in doubt, pull in the Tow Plow

20 Steering Use Tow Plow deployment to “steer” while negotiating tight turns – Left turns with right hand Tow Plows – Right turns with left hand Tow Plows Avoid turns that require you to stop and back up If retracted to tow position during turns, raise the mold board Can be left in deployed position with mold board down and adjusted for obstacles to clear larger intersections

21 Steering Through Tight Turns

22 Pre-trip Inspection Before each use: – Make sure that all nuts and bolts are in place and properly tightened – Make sure that all other fasteners are in place and are performing their specified function – Make sure all safety signs are in place, clean, and legible – Replace any damaged parts or excessively worn parts – Inspect for damage to any part of the plow mold board or push frame Examples include broken or worn bolts or pins, cracked welds, bent sections, and/or excessive rusting – Inspect for damage to trip mechanisms, such as broken springs, cracked welds, and worn or broken bolts – Check all hoses for cuts, cracks, and leaks – Dump air from air brake reservoir to remove any moisture

23 Plowing Operations Always try to position the Tow Plow in lanes that keep the plow farthest away from obstacles, such as guardrails, signs, etc. Position the Tow Plow based on type of operation and configuration of the plows – Single operation Plow two lanes as best as possible Plow center turn lanes – Gang operation Have enough plows to cover shoulder to shoulder Utilize single plow trucks for clearing shoulders and ramps Have single plow run shoulders next to guard rails

24 Gang Plowing Try to position the crown of the road between the tow vehicle and the Tow Plow For clearing first priority (high volume) routes, operational speeds should be within the following: – Safe for conditions present – Safe for traffic volume and conditions – Reduce spacing appropriately for limited visibility – Paced so that multiple gang trucks do not become separated – Spaced so that traffic may not pass between the gang plows

25 Starting Operations with a Gang Communication is key – Ensure all operators know the procedures to be used – Ensure that all operators know their position in the gang – Enter traffic at speeds that are safe and allow the gang to stay together

26 Plowing Operations Plowing heavy snow loads may require adjusting plow / truck position – Snow loads may suddenly decrease and allow the plow to skew back to it original position, such as clearing snow under bridges and overpasses – Tow may strike guardrail and other roadside devices when it returns to its normal position after the heavy snow load is released Plowing aggregate shoulders – Raise mold board 2” to 4” above ground

27 Emergency Stopping Maintain a safe distance from traffic in front of you The Tow Plow is equipped with ABS braking system Brake as you normally would The procedure for stopping a trailer skid is: – Recognize the trailer skid by seeing it in your mirrors – Check mirrors anytime you brake hard to make sure the trailer is staying where it should be – Once the trailer swings out of your lane it is hard to prevent a jackknife – Stop using the brakes to get traction back – Do not use the hand brake (this will cause the trailer to continue to skid) – Once the wheels start to grip the road again, the trailer will start to straighten out and follow the tow vehicle – If the Tow Plow is deployed during a skid, leave in the deployed position

28 Lighting There are two groups of lighting on the Tow Plow: – Work/warning – Operational (DOT) Tow Plow lighting is connected to the truck via two separate trailer plugs: – 7 wire large plug for DOT vehicle lights – 6 wire plug for work and warning lights

29 Laser Guidance Lasers can be used to determine Tow Plow position in relation to roadside obstacles – Can be helpful to determine Tow Plow position when fully extended – Mounted to the truck – Only represents full Tow Plow extension

30 Tow Plow Inspection Used to assist operator in Tow Plow inspections – Use to pre-trip – Can be used for pre-storm inspections

31 Dry-Run Check List Performed pre-season – Dry-Run – Allows operator to become familiar with the Tow Plow – Identify hazards – Identify turnaround points – Discuss and plan plowing procedures

32 Closed Driving Maneuvers Provides several plowing scenarios including but not limited to – Ramps – Stalled vehicles – Barriers – Curves Include additional maneuvers as needed

33 THANK YOU!


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