Adjusting and Tightening Wheels-Heavy-Duty Drive Wheels and Dual Hubs

RXA0091580-UN-20NOV06

Heavy-Duty Hub-10 Bolt (110 mm Axle)

RXA0090157-UN-08AUG06

Heavy-Duty Drive Wheel-12 Bolt (120 mm Axle)

A - Cap Screws

CAUTION: Avoid personal injury. Never run the engine with transmission in gear when adjusting wheels. Wheels on the ground could pull supported wheels off jackstands.

Never operate tractor with a loose rim, wheel or hub.

IMPORTANT: Tractors are equipped 12 bolt heavy-duty drive wheels and 10 or 12 bolt hubs. Numbers indicating proper torquing sequence are cast into wheel hub.

Carefully follow procedure. Failure to do so could lead to sleeve or cast wheel damage.

IMPORTANT: Clean any paint, grease, film, rust or debris from axle shafts, cap screws, and threads prior to positioning and installing wheel sleeves and cast wheel. DO NOT apply any lubricant to cap screws, threads, wheel or axle.

1. Raise the tractor on level ground and support tractor with jackstands.

2. Loosen (without removing) sleeve bolts (1—10) or (1—12) just enough to move wheel.

   IMPORTANT: Do not loosen or remove the two allen head screws. Doing so could result in wheel jamming or damage.

3. NOTE: Adjusting tool is not compatible with heavy-duty cast wheel.

   CAUTION: Use a hoist, wheel dolly or proper lifting equipment to safely slide and adjust wheels on axles and avoid possibility of personal injury.

   Failure to follow torquing sequence and procedure will result in damage to wheel sleeves and may result in personal injury. Wheel bolt torques are critical and require repeated tightening.

   Move wheel to desired position.

4. Tighten bolts (1—10) or (1—12) in numerical torque sequence until bolts maintain initial torque. Make sure wheel is perpendicular to axle.

   Item	Measurement	Specification
   Wheel Bolts	Initial Torque	405 N·m 300 lb-ft

5. Tighten bolts (1—10) or (1—12) in numerical order until bolts maintain final torque.

   Item	Measurement	Specification
   Wheel Bolts	Final Torque	610 N·m 450 lb-ft

6. IMPORTANT: Some sleeve bolts may loosen as sleeve is tightened. Repeat star shaped numbered sequence torquing pattern until ALL sleeve bolts maintain the proper torque. Failure to follow procedure could result in damage to equipment and may result in personal injury.

   Drive tractor unloaded in a large figure-8 pattern a minimum of four times and tighten bolts in numerical order until bolts maintain final torque of 610 N˙m (450 lb-ft).

7. IMPORTANT: Keep wheel sleeve cap screws tightened to specification. If tractor is operated with loose wheel sleeves or under-torqued cap screws it may be necessary to replace sleeves and cast wheels.

   Torque bolts after working 3 HOURS, 10 HOURS, and DAILY during the first week of operation or until bolts do not move when re-torquing.

   NOTE: Continue to check torque a minimum of weekly if used for normal scraper operations.