Hyster Forklift R30XMS3

WARNING: The lift truck and components are heavy. Be sure that all lifting devices (hoists, cables, chains, slings, etc.) are suitable and of adequate capacity to lift the lift truck or component. The lift truck can weigh up to approximately 3541 kg (7800 lb) empty.

Move the steering control so the drive wheel is in a position for straight travel.

WARNING: Disconnect the battery and separate the connector before opening the drive unit compartment door and before inspecting or repairing the electrical system. If a tool causes a short circuit, the high-current flow from the battery can cause injury or parts damage.

Disconnect and remove the battery.

Remove the electrical compartment cover for access to the traction motor controller.

WARNING: The capacitor in the traction motor controller can hold an electrical charge after the battery is disconnected. To prevent electrical shock or injury, discharge the capacitor before inspecting or repairing any component. Wear safety glasses.

Discharge the traction motor controller by connecting a load across terminals B+ and B-.

Open the drive unit compartment door and drain the oil.

Remove the six capscrews and lockwashers that fasten the traction motor to the adapter ring on the MDU.

Remove the wheel nuts and the drive/steer wheel

Remove the nine capscrews that fasten the lower housing to the upper housing

Remove the four capscrews inside the upper housing

Remove the two capscrews inside the case that are secured with washers and nuts on the opposite side of the upper housing

Separate the upper housing from the lower housing

Remove the capscrews retaining the drive unit cover

Install two wheel nuts on to the wheel bolts

Upload a photo of the MDU sealing surface with Loctite 243® and Loctite 5910®

Side cover installed onto MDU assembly

Enter the torque applied to the side cover

Breather valve installed into sealing cap

Steering gear installed onto MDU assembly

Upload a photo of the steering gear and MDU assembly

Enter the torque applied to the hexagon screws

Oil drain plug installed into MDU assembly

Enter the torque applied to the oil drain plug

Warning: The oil used in the master drive unit should be drained and replaced after 350 hours of initial operation in accordance with the maintenance schedule. After the initial oil change, the master drive unit requires only the addition of the recommended oil to maintain the oil at the proper level.

Drain the oil when it is warm by removing the drain and fill plugs.

Upload a photo of the drain pan under the drain to keep oil off the floor.

Install the drain plug and fill the unit by adding oil slowly.

Allow enough time for the oil to flow through the bearings to fill the reservoir.

The correct level is at the bottom of the fill plug hole.

Sign off on the oil change procedure

CAUTION: The traction motor is only allowed to be lifted with soft ropes or belts, never with steel cables or chains. Care must be taken during transport to avoid shocks.

NOTE: The traction motor shaft and MDU input pinion splines should be lubricated every 2000 hours.

Traction motor removed from the drive unit?

Motor shaft splines and the drive unit input pinion wiped clean?

Upload a photo of the cleaned motor shaft splines and the drive unit input pinion

Enter the type of paste used for lubrication

Dow Corning® Molykote G-N paste (or equivalent) (Hyster P/N 0339068) applied with a small brush to moderately coat internal MDU splines and external drive motor splines?

Upload a photo of the lubricated internal MDU splines and external drive motor splines

Traction motor reinstalled to the drive unit?