Parallelogram and Scissor Lifts
The following are common concerns, causes and solutions to maintaining, servicing and repairing parallelogram and scissor lifts to function at optimal levels in the shop:
Parallelogram Lifts, Scissor Lifts, and Pad Lifts
Common Concerns and Solutions for Parallelogram and Scissor Lifts
Problems:
1. Lift will not lower.
2. Latches will not engage on the way up.
3. Lift raise is uneven.
Causes:
1. Latches not disengaging.
2. Air supply lines leaking.
3. Equalization sensor out of adjustment.
Solutions:
1. Repair leak in air latch system.
2. Recalibrate equalization sensors as per OEM specification.
3. Replace power unit.
Common Concern for Pad Lifts
Pad lifts are becoming more popular as they can be used on wider range of applications in quick service bays and shops. It is important to make sure the rubber pads are in working condition and extensions are available and being used in the shop for use on heavier/larger applications.
The following are concerns, causes and solutions for maintaining, servicing and repairing pads lifts to function at optimal levels in the shop:
Problems:
1. Electric Motor does not run
2. Electric motor runs but will not raise lift.
3. Safety-lock not engaging.
4. Worn pads
5. Missing adapters
Causes:
1. Hydraulic power unit electrical breaker fault.
2. Plugged suction screen.
3. Safety latch mechanism bent or requires adjustment.
4. Pad wear over time and usage
Solutions:
1. Reset or replace faulty circuit breaker.
2. Clean or replace suction tube.
3. Flush contaminants from reservoir.
4. Repair or replace bent locking arm.
5. Replace power unit.
6. Replace rubber pads.
7. Make sure pad extensions are in shop and being used