Install Front Wheels—Dual Wheels

1. CAUTION:

   
   H96886-UN-14JUN10

   
   H96863-UN-10JUN10

   Torque Sequence

   A - Drive Hub

   B - Spacer Ring

   C - Washers (10 Used)

   D - Wheel Bolts (10 Used)

   Dual wheels are heavy (approximately 340 kg (750 lb.) without liquid ballast) and difficult to handle due to extreme offset of tire and rim. When handling wheels, off centered weight can suddenly shift making wheel handling awkward and the wheel difficult to control. To avoid personal injury, two people are needed to control wheel handling.

   NOTE: If installing dual wheels, both inner and outer wheels are positioned, so bottom end of tire cleats are facing towards front and down. Tire MUST be installed as directed or machine will not be drivable.

   Pilot stud HXE16110 is recommended to help guide wheels into position.

   Install pilot studs in top and bottom holes of drive hub (A). Stud threads must bottom out in hole so inner end is flush with inside of hub.

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2. IMPORTANT: Due to countersunk design of spacer ring, inner wheel bolts can be checked and torqued when outer wheel is removed.

   Inner wheel is installed over drive hub (rim dished in) positioning tire close to machine.

   Position inner wheel on studs with bottom end of tire cleats to front and down.

3. Install wheel with spacer ring (B) and retain with washers (C) and wheel bolts (D). Wheel bolt heads fit inside larger unthreaded holes.

4. Remove pilot studs and replace with washers and wheel bolts.

5. Torque wheel bolts to specification using criss/cross pattern to evenly pull wheel tight against hub.

   Item	Measurement	Specification
   Wheel Bolts	Torque (Lubricated)	710 N·m (524 lb.-ft.)

6. Repeat steps on opposite of machine.

7. IMPORTANT:

   
   H96887-UN-17JUN10

   
   H96863-UN-10JUN10

   Torque Sequence

   A - Pilot Studs

   B - Spacers

   C - Washers (10 Used)

   D - Wheel Bolts (10 Used)

   E - Chain Slot

   Due to countersunk design of spacer ring, inner wheel bolts can be checked and torqued when outer wheel is removed.

   NOTE: Outer wheels have a chain slot (E) in rims.

   Outer Wheel Installation: Install pilot studs (A) in top and bottom tapped holes of spacer ring. Stud threads must bottom out in hole.

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8. Position outer wheel on studs with bottom end of tire cleats to front and down.

9. Install wheel with spacers (B) and retain with washers (C) and wheel bolts (D).

10. Remove pilot studs and replace with spacers, washers, and wheel bolts.

11. Torque wheel bolts to specification using criss/cross pattern to evenly pull wheel tight against hub.

    Item	Measurement	Specification
    Wheel Bolts	Torque (Lubricated)	710 N·m (524 lb.-ft.)

12. Repeat steps on opposite side of machine and lower to ground.

13. Check tire pressure and inflate as needed. See Care and Service of Tires in this section for tire inflation pressure.