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Vehicle Lift Safety Operator’s Instruction, Inspection & Maintenance.

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Presentation on theme: "Vehicle Lift Safety Operator’s Instruction, Inspection & Maintenance."— Presentation transcript:

1 Vehicle Lift Safety Operator’s Instruction, Inspection & Maintenance

2 Why we need Lift Safety  To prevent injury and death  Because it’s the law  Majority of accidents are operator error  To get respect and maintain respect for the lift  Accidents are becoming more common  YOU HAVE A FEW THOUSAND LBS OVER YOUR HEAD

3 Types of Lifts Surface Mount  2 Post  4 Post  Parallelogram  Scissor  Mid-rise  Mobile Column In ground  Single Post with swing arms  Dual Post with swing arms  Fore and Aft  Single-double-triple  Adjustable Posts

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5 Lift Descriptions- 2 Post Lifts  Most popular  Inexpensive  Easy access to removable parts on vehicles

6 2 Post Lift Types  Cable Equalized  Hydraulic Equalized  Chain Equalized  Lift Cable (One Cylinder)  Mechanical (Screw Type) Overhead BeamOverhead Beam Base Plate Bump-overBase Plate Bump-over

7 Cable / chain equalized  Cables / chain are attached from the top of one carriage to the bottom of the other  Properly adjusted: the cables / chain, force the lift to raise and lower equally even if the weight differs from side to side  Many moving parts  High Maintenance design  Most popular 2 post design  Animation courtesy of Girolift USA www.girolift.net

8 Hydraulic Synchronized  Fluid on top side of main ram flows to offside ram in a closed hydraulic system (blue)  Power unit pumps oil into the bottom of main side cylinder  Rams are different in size and mathematically designed to distribute the exact amount of fluid to raise both sides equally  Low maintenance design  Very few moving parts  Animation courtesy of Girolift USA www.girolift.net

9 Symmetric Lifts Symmetric  Posts are parallel  Arms are usually the same length  Car’s centre of gravity is positioned approximately at midpoint of the lift

10 Asymmetric Asymmetric  Posts are tilted approximately 30degrees for easier access to car doors  Short arms in the front  Car’s center of gravity is positioned further rear

11 Safety Features of 2 Posts 1)Owner’s Manual 2)ALI Literature, Lifting point guide, ANSI/ALI ALOIM Current Standard, Lifting it Right 3)Locking Latches 4)Arm Restraints 5)Overhead Limit Switch 6)Emergency Electrical Shut-off 7)Pressure Relief Valve 8)Hydraulic Fuse

12 Owners Manual  Should be present when lift is delivered  Has manufacturer contact information  Has proper maintenance procedures  Shows parts list and operation procedures  To be READ! from cover to cover  Any question you have with the content of the manual or the lift can be answered by the manufacturer.

13 WHAT IS A.L.I.  The Automotive Lift Institute, Inc.  ALI’s mission is to promote the safe design, construction, installation, service, and use of automotive lifts.  ALI has set the standard for automotive lift manufacturers  ALI certifies the construction of lifts  The only specialized organization of its kind  For more info Visit www.autolift.org

14 The ALI Gold Label  Certified Automotive Lift  ETL Listed  Conforms to ANSI/UL Standards  3 rd Party Tested  Manufacturer is a ALI Member

15 ALI Literature  ANSI/ALI ALOIM (current) The standard for Automotive lifts  Safety requirements For The Operation, Inspection And Maintenance

16 ALI Literature  Vehicle Lifting Points (Current)  Quick Reference Guide  Too be used to look up proper lifting points for frame engaging lifts

17 ALI Literature  Lifting It Right  A Safety manual from the Automotive Lift Institute  Describes types of lifts  Properly spotting a vehicle  Safety procedures

18 ALI Literature  Automotive Lift Safety Tips Placard  To be posted on every lift where the operator can see them.  Generic list of safety tips for use with all Automotive lifts

19 ALI Literature  Safety Decal  Used to illustrate hazards  To be placed in a spot where it is visible to the operator

20 Description of Safety Features for 2 Post Lifts Locking Latches  A mechanical device that latches the lifting carriage to the post by using a spring loaded locking dog and locking ladder  A Load holding device  Not a back-up in case of failure To be used EVERY time the hoist goes up

21 Description of Safety Features for 2 Post Lifts Arm Restraints: (Not A Arm Lock)  Designed to hold the arm in place before it makes contact with the vehicle (not to hold the arm out when the vehicle’s weight is on it).  An Arm Restraints job is over when the lift makes contact with the vehicle

22 Description of Safety Features for 2 Post Lifts Overhead Limit Switch Will shut the hoist off when the roof of the vehicle makes contact with it. Will shut the hoist off when the roof of the vehicle makes contact with it.  Do not rely on it to determine when to stop or use as an automatic stop

23 Description of Safety Features for 2 Post Lifts Emergency Electrical Shut- off / Disconnect  Should be a twist plug connection or switch / breaker within reach of the operator

24 Description of Safety Features for 2 Post Lifts Pressure Relief Valve  Located within the power unit  Factory set to bypass when you over exceed the lift’s weight limit  Not to be relied on as a capacity gage A Power unit is NOT a load holding device. A power unit it used to raise the lift. The locking latches are used to load hold. A Power unit is NOT a load holding device. A power unit it used to raise the lift. The locking latches are used to load hold.

25 Description of Safety Features for 2 Post Lifts Hydraulic Fuse  Normally located at the base of the cylinder  Designed to lock out it’s device when there is a sudden spike in pressure

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27 Lift Descriptions- 4 Post:  Runways (no arms)  Can be equipped with rolling jacks  Used mainly for Alignments, Undercoating, & Oil Changes

28 Types of 4 Post Lifts  Chain Lift  Cable Lift  Fully Hydraulic

29 Safety Features of 4 Posts  Owner’s Manual  ALI Literature  Primary Locking Latches  Secondary Locking Latches  Wheel chocks  Emergency Electrical Shut-Off  Pressure Relief Valve  Hydraulic Fuse

30 Description of Safety Features for 4 Posts Primary Locking Latches  Usually one on each post  Normally single point release (air activated)  Not to be used every time the hoist goes up

31 Description of Safety Features for 4 Posts Secondary Locking Latches  Equipped on most 4 posts  Will engage if chain or cable becomes slack Wheel chocks  to prevent vehicle rolling. To be used in sets of two every time a vehicle is placed on a lift using runways

32 Description of Safety Features for 4 Posts Emergency Electrical Shut-Off Pressure Relief Valve & Hydraulic Fuse  Same descriptions as for the 2 Post

33 Description of Safety Features for 4 Post Lifts Emergency Electrical Shut-off / Disconnect  Should be a twist plug connection or switch / breaker within reach of the operator

34 Description of Safety Features for 4 Post Lifts Pressure Relief Valve  Located within the power unit  Factory set to bypass when you over exceed the lift’s weight limit  Not to be relied on as a capacity gauge  Is the power unit on your lift its original?

35 Description of Safety Features for 4 Post Lifts Hydraulic Fuse  Normally located at the base of the cylinder  Designed to lock out it’s device when there is a sudden spike in pressure

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37 Lift Descriptions- Scissor Lifts, Parallelogram, & Mid-Rise:  Low maintenance  Good for heavy lifting  Used for alignments, lube rack, undercoating  Can be equipped with rolling jacks  Usually has one cylinder on each side

38 Lift Descriptions- Scissor Lifts, Parallelogram, & Mid-Rise:  Scissor lift lifts straight  Parallelogram lifts up but also moves back or forward a couple of feet

39 Safety Features of Scissor Lifts, Parallelogram, & Mid-Rise:  Locking Latches located on the floor with a foot pedal release and / or air/electrical operated lock release  Hydraulic Fuses  Equalized hydraulically / electronically or fastened together

40 Mobile Column Lift Mobile Column Lift

41 Lift Descriptions- Mobile Column or Wheel-Engaging:  Used for heavy lifting  Can be used in sets of 2,4,6 and on  Mechanical screw types  Fully hydraulic  Usually equalized (visually) by the operator

42 Lift Descriptions- In-Ground:  Used for heavy lifting  No obstructions  Cleaner shop  Low maintenance

43 Safety Features of In- Ground  Newer models have locks and non- rotates  Locking Latches, manual pin, air/electric/ manual operated locks, inner safety leg- locking dog  Most swing arm models do not have arm restraints

44 Properly Lifting A Vehicle

45 Center of gravity  Every vehicle has a different centre of gravity  Ex.. rear wheel drive vehicles are heavier in the rear this differs the centre of gravity from a front wheel drive vehicle  Rear wheel drive vehicles centre of gravity is usually spotted under the drivers seat where as a front wheel drive vehicles centre of gravity is usually spotted under the steering wheel  The vehicles center of gravity is ALWAYS to be spotted midway between the front and rear arms on a two post lift.

46 Center Of Gravity  The center of gravity of a vehicle with the engine in the rear is totally different from a vehicle with its engine in the front  Always check the trunk of a car or the back of a truck or van for a load This Lotus Elise flipped when the tech removed its front wheel

47 2 Post Operation  Inspect your lift  Make sure bay is free of debris, tools  Ensure that arms of lift are out of the way  Check vehicle’s weight with hoist capacity  Look-up vehicle’s lifting points  If all above is good, drive car into bay

48 2 Post Operation con’t  Check lifting points to make sure vehicle is in good enough condition to be lifted  Position all 4 arms on manufacturer’s lifting points. Use adapters if applicable.  Raise lift until pads are 1-2” from vehicle  Re-check lifting points  Lift vehicle until tires are aprox 1’ off the ground  Re-check lifting points  Go to back of vehicle and shake moderately

49 2 Post Operation con’t  Re-check lifting points  Raise vehicle to desired working height  Lower to Locking Latches (use stands if possible)  Perform work  If you need to do any heavy pulling, hammering, or prying, or if you are removing or installing a major component of the vehicle, use appropriately rated jack stands.

50 Jack stands / Supports  To be used in sets of four whenever possible  Make sure stands have a high enough capacity rating  DO NOT LOWER VEHICLE TO STANDS  Always heighten the stands to height of vehicle that is currently on the primary safety latches.

51 2 Post Operation con’t  When job is completed check for tools, debris, stands, transmission jacks etc.. left behind  Raise lift off latches, release latches, and lower the lift  Re-position arm to “home position”  Remove or lower adapters if applicable  Drive off

52 Maintenance & Inspection

53 Your lift has many components to allow it to work safely and properly. Knowing these components, inspecting these components, and maintaining these components will reduce your risk of injury and death.

54 Maintenance & Inspection- Components to Check: Cables and Chains:  Check cables for frays, kinks, crushing, bird caging, heat damage or rust  While wearing a leather glove, run a rag down the cable, the rag will grab frays that may not be visible to the eye  Check end attachments for wear, damage, cracks and deformations  Equalizing cables have to be adjusted properly. With the lift on the locks adjust the cables so they are taught and have equal tension on each side (locking latches should engage at the same time when cables are adjusted properly.  Any question consult your lift repair specialist

55 Common Cable Failure

56 Chain (only as strong as the weakest link)  Check chains for rust, glazing, cracks, twist, elongation & separation cracks, twist, elongation & separation  Chain wear should be checked where chain runs on load sprocket or roller  Check the fittings or master links make sure fasteners are in place. If you see any wear or have any question Consult your lift repair specialist

57 Maintenance & Inspection- Components to Check: Hydraulics:  Check hoses, fittings & cylinders for leaks, wear and cracks Locking Latches:  Check that they fully engage & fully disengage  Check for wear and cracks  Check their fasteners

58 Maintenance & Inspection- Components to Check: Arms and Pads:  All 4 arms are within ½” of being level  Check operation of the arm restraints, check for wear on gear and teeth  Check that the arm limit stops are working (i.e. see if they can be pulled out- they shouldn’t)  Check arm pins for play  If equipped with rubber pads check for cuts and tears

59 Maintenance & Inspection- Components to Check: Electrical System:  Visually check  Test that safety shut-off is working  Test to ensure overhead limit switch working Anchor:  Check concrete around bases for cracks  Torque anchor bolts to manufactures specs, (usually 90-150 ft/lbs)

60 Maintenance & Inspection- Components to Check: Flashing:  Check posts for rust or damage (especially at bottom of post where water lays)  Inspect carriage inside post- slider blocks or carriage rollers  Check chains, cables, fasteners on each end Hardware:  Check bolts and fasteners for tightness

61 Maintenance & Inspection- Components to Check: Power Unit:  Max out power unit by putting hoist up all the way to show oil leaks. (maxing out hydraulic system simulates maximum capacity)  Make sure you have all literature ex ALI Lifting it Right, Lifting points guide, ANSI/ALI ALOIM National Standard, ALI Safety Tips placard.  Look for capacity rating, safety decals owner’s manual and operator instruction  Make sure your lift has been inspected by a lift service specialist within the year (minimum)

62 Lowering Speed  Restrictions in the lowering valve control the lowering speed  After you have inspected your lift you can position a vehicle on the lift of a appropriate weight.  To check the lowering speed of your lift raise a vehicle to the top of your lifts rise (commonly 68” or 5’ 6”)  It should take 15-20 seconds to lower a vehicle from 6’  The standard lowering speed is 20 feet per second

63 When Should You Inspect Your Lift?

64 When should you inspect your lift?  The operator should visually inspect their lift every day before lifting a vehicle. Who knows what the last mechanic over ridded or jury rigged.  The operator should document a physical inspection weekly  The operator will perform monthly maintenance and inspection monthly  Continued…….

65 When should you inspect your lift?  Your lift has to be inspected by a qualified lift repair specialist yearly in most States and Provinces. This is the minimum, semi yearly or quarterly is a better practice and becoming more and more popular.  Make sure your lift service specialist is:  Factory trained by a major manufacturer: make them supply certificates  Insured : usually 2 million liability minimum on company and all vehicles  In good standing with Workers Compensation Board (Canada)  Competent and knowledgeable. Your lift repair specialist should have all your answers to any lift related questions you have.

66 Overview  Primary locking latches are to be used every time the lift goes up.  Vehicle manufacturer recommend lifting points are the ONLY lifting points to be used  Never over load your lift  Never use a damaged lift  Never lift a vehicle with someone inside the vehicle or someone underneath

67 Overview  Never override or jury rig self closing controls  Always position vehicles centre of gravity in the mid point between two arms  Use appropriate rated stands whenever possible and ALWAYS when removing / installing major vehicle components  Proper positioning of pads and adapters is key in lifting a vehicle safely and surely  GET OUT OF THE WAY if a vehicle is in danger of falling

68 Overview  Lifts are dangerous pieces of equipment respect the maintenance, inspection and operation procedures associated with the Manufacturers supplied operators manual.  Only trained operators are authorized to use automotive lifts.

69 Overview If you have paid attention to the course thus far you are now knowledgeable about the safety devices and maintenance of the most common automotive lifts. This is a generic course and cannot cover all types and all devices however if you have any questions regarding the safety and or maintenance of a specific automotive lift please contact us from the homepage and we will get you the answer you need.

70 Exam  You are now ready to write your exam and become a trained operator of a automotive lift  There will be 25 multiple choice questions followed by a short survey You will need a mark of 85% or better to pass the exam. If you feel you need to go over the course again before you write the test please do so. Your confidence in operating and maintaining your lift safely is our main concern at Autoliftsafety.com GOOD LUCK AND LIFT SAFE! GOOD LUCK AND LIFT SAFE!


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