Hyster-Yale Electric Pallet Truck MPW045-E

1. Turn the key switch to the OFF position and disconnect battery.

2. Remove the upper drive unit compartment cover.

3. Discharge the capacitor. See Special Precautions in this section.

4. Disconnect the wire harness plug from the back of the display. Locking tab is hidden underneath rubber boot.

5. Remove nuts and washers holding retaining bracket. Remove bracket and gauge from control panel.

1. Install gauge in control panel.

2. Install retaining bracket, washers, and nuts. Tighten nuts.

Warning: This procedure requires trained personnel with PPE!

Note: Inspect the brushes and commutator every 350 hours for best operation and to prevent motor damage.

Note: The following procedure is for inspecting the brushes and commutator with the motor installed in the lift truck.

Drive wheels raised for commutator rotation?

Battery removed for motor access?

Warning: Compressed air can move particles so that they cause injury to the user or to other personnel. Wear protective goggles or a face shield to prevent injury to the eyes.

Brush covers at rear of motor removed?

Brushes removed and inspected for damage or uneven wear?

Warning: This procedure requires trained personnel with PPE!

Motor brushes worn enough to damage the surface of the commutator?

Brush lead fastened to the brush with a rivet?

Brush does not move easily in its holder?

Lead wire for some brushes installed directly into the carbon compound of the brush?

Brushes made to different specifications for motors used in different applications?

Battery does not need to be removed to access the electric motors?

Battery removed as necessary for your lift truck?

WARNING: Put blocks under both forks and on both sides of the drive tire. The blocks must prevent the lift truck from falling and causing personal injury or property damage.

NOTE: The caster wheel does not have to be removed from the lift truck frame to replace the wheel or the wheel axle.

Raise the drive wheel off the floor. Block the lift truck. See How to Put a Lift Truck on Blocks.

Remove the lock nut retaining the wheel on the wheel axle. Drive the wheel axle out of the arms and remove the wheel.

Align the wheel between both arms and install the wheel axle. Install the nut on the wheel axle. Tighten the nuts to 34 to 47 N•m (25 to 35 lbf ft).

Remove the blocks from under the lift truck and lower the truck to the floor.

Test the operation of the truck prior to returning the truck to service.

Sign off on the caster wheels replacement

Move lift truck to a safe, level area.

Turn the key switch to the OFF position and disconnect battery connectors.

Block drive tire to prevent movement. See the section Periodic Maintenance 8000YRM1048, Periodic Maintenance 8000YRM1009, or Periodic Maintenance 8000YRM1379 for your lift truck.

Remove the upper drive unit compartment cover.

Discharge the capacitor. See Special Precautions.

Tag, identify, and disconnect the contactor coil wires.

Test contactor coil using an ohmmeter.

Touch the probes of the ohmmeter to the coil terminals and measure the resistance between the terminals.

Replace contactor if coil resistance readings measure outside of specifications. For contactor coil resistance values, refer to Table 1.