VII. SERVICE AND MAINTENANCE

Drive Train

Hydrostatic Pump

NEUTRAL SETTING - When the hydrostatic lever is in the neutral position, the machine should not be moving in either direction. If it does, the neutral setting of the lever (fig. 7.46) on the hydrostatic pump needs to be adjusted.

CHECK CHARGE PRESSURE - See page 37.

REPAIR/REPLACEMENT - Hydrostatic pumps are available as a core exchange item from Hagie Manufacturing Customer Support Department.

Auxiliary Gear Pumps

REPAIR/REPLACEMENT - Gear pumps are available from the Hagie Manufacturing Customer Support Department.

Wheel Motors

REPAIR/REPLACEMENT - Wheel motors are available as a core exchange item from Hagie Manufacturing Customer Support Department.

Torque Hubs ®

GREASE - Grease according to page 93.

OIL - Maintain oil level according to page 83.

Wheel Motor

REPAIR/REPLACEMENT - Call the Hagie Manufacturing Customer Support Department for parts and repair.

VII. SERVICE AND MAINTENANCE

Wheel Bolts

To install wheel and tire assembly on the Torque Hu b®, lubricate Torque Hub® studs with anti-seize grease. Align the wheel bolt holes with the Torque Hub ® studs and mount the wheel on the hub.

NOTE:

To achieve even torque consistency, the tire should be completely off the ground.

Start all of the lug nuts on and tighten them until they are just snug. Following the torque sequence in figure 7.49, first turn each lug nut to a torque value of 120 dry foot-pounds. Use slow, even pressure on the torque-wrench. Quick or jerky movements cause inaccurate values. Repeat the same sequence t o 150 dry foot-pounds and again finally to 180 dry foot-pounds.

Check lug nut torque immediately after receiving machine and every 50 hours thereafter.

If the wheel turns during lug nut torquing, lower the machine to the ground just enough for the tire to touch and prevent rotation or more preferably, place a suitable wedge between the tire and the ground.

Lower the machine and resume operation. Recheck torque after 30 minutes of operation.