Product Description
LOCKWASHER
Frequently Asked Questions
Q: What is a lock washer and what does YL 500030902 do?
A: YL 500030902 is an OEM lock washer designed to prevent fastener loosening from vibration and load cycling. It is used in Yale MP/MPB 040 AC electric pallet truck assemblies where bolt retention and safety are critical. Lock washers maintain clamp load and prevent gradual fastener migration.
Q: Which Yale pallet jack models use YL 500030902?
A: YL 500030902 is compatible with Yale MP/MPB 040 AC electric pallet truck assemblies. This part is used in multiple drive, brake, and steering subassemblies where threaded fasteners require vibration resistance.
Q: How often should YL 500030902 lock washers be replaced?
A: Lock washers like YL 500030902 are single-use components. They should be replaced whenever a fastener is removed and reinstalled. Do not reuse lock washers as they lose their spring tension and locking effectiveness after initial compression.
Q: Can YL 500030902 be used interchangeably with standard flat washers?
A: No. YL 500030902 lock washers are not interchangeable with standard flat washers. Lock washers have deformed geometry or spring-lock design that creates friction and prevents rotation under vibration. Standard washers cannot provide this anti-loosening function in electric lift truck applications.