WALMART MAINTENANCE Equipment Troubleshooting 2 — Questions and Answers
Question 1: A pallet jack's forks will not raise even though the pump handle moves freely. What is the most likely cause?
- Low hydraulic fluid level (Correct answer)
- Bent fork tines
- Worn drive wheels
- Faulty horn circuit
Correct answer: Low hydraulic fluid level
Low hydraulic fluid is the most common reason a pallet jack pump handle moves but fails to lift the forks.
Question 2: An electric floor scrubber leaves streaks of dirty water behind instead of a clean floor. What should you check first?
- Squeegee blade condition and adjustment (Correct answer)
- Battery charge level
- Brush motor speed setting
- Water tank fill level
Correct answer: Squeegee blade condition and adjustment
A worn, damaged, or improperly adjusted squeegee blade prevents water from being picked up cleanly, leaving streaks.
Question 3: A reach truck's mast tilts sluggishly or unevenly. Which hydraulic component is most likely at fault?
- Tilt cylinder or hydraulic hose (Correct answer)
- Drive motor brushes
- Overhead guard bolts
- Horn button
Correct answer: Tilt cylinder or hydraulic hose
Sluggish or uneven mast tilt typically points to a faulty tilt cylinder, restricted hose, or low hydraulic fluid.
Question 4: A conveyor belt tracking consistently to one side and running off the edge is best corrected by:
- Adjusting the tail pulley or tracking rollers (Correct answer)
- Increasing belt speed
- Replacing the belt immediately
- Lubricating the drive chain
Correct answer: Adjusting the tail pulley or tracking rollers
Misaligned tail pulleys or tracking rollers cause belt drift; adjusting them centers the belt on the frame.
Question 5: A compactor machine fails to cycle after pressing the start button. The first thing to verify is:
- Safety door or gate interlock is fully closed (Correct answer)
- Oil viscosity grade
- Compaction pressure setting
- Cycle counter reading
Correct answer: Safety door or gate interlock is fully closed
Compactors rely on safety interlocks that prevent operation when access doors or gates are open.
Question 6: During operation, a riding floor buffer produces excessive vibration. The most probable cause is:
- Unbalanced or damaged buffing pad (Correct answer)
- Low battery voltage
- Clogged recovery tank filter
- Worn steering column
Correct answer: Unbalanced or damaged buffing pad
An unbalanced, torn, or improperly seated buffing pad is the leading cause of abnormal vibration in floor buffers.
Question 7: A dock leveler plate does not hold its raised position and slowly sinks when weight is applied. The likely cause is:
- Hydraulic cylinder seal leak or faulty hold valve (Correct answer)
- Deck plate surface wear
- Lip extension spring failure
- Incorrect dock height setting
Correct answer: Hydraulic cylinder seal leak or faulty hold valve
Internal hydraulic seal leaks or a failed hold valve allow fluid to bypass, causing the leveler to drift down under load.
WALMART MAINTENANCE Equipment Troubleshooting 2
A pallet jack's forks will not raise even though the pump handle moves freely.
What is the most likely cause?