Rear Wheel Tread Adjustment (with Rack-and-Pinion Axles) — Cast Wheels (6140M only)

RW26332-UN-24JUN99

CAUTION: Avoid injury. NEVER run the engine with transmission in gear and rear wheels off the ground. MFWD wheels could pull rear wheels off support. MFWD must be disengaged and transmission in NEUTRAL to rotate axle.

1. Raise tractor on level ground and turn wheel so rack on the axle is upward.

2. Loosen the lower hub center bolt against the retaining nut. Loosen the outer hub sleeve bolts.

3. Tighten inner jack screws on upper and lower hub sleeves to loosen sleeves. Tighten jack screws up to 500—600 N∙m (370—440 lb.-ft.) if necessary.

   NOTE: Strike end of axle with a heavy hammer and use penetrating oil if sleeves are difficult to break loose.

4. Turn adjusting screw to slide wheel to desired position. Observe tread width limitations.

   IMPORTANT: The distance between the side wall of the tire and the fender must not be less than 40 mm (1.57 in.)¹.

   The distance between the running surface (edge) of the tire and the fender must not be less than 60 mm (2.36 in.)¹.

   If snow chains are installed on the tires, the minimum distance from the tires to the fenders (side wall to fender and running surface to fender) must be 100 mm (3.94 in.).

5. Loosen the jack screws all the way against the stop.

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

   IMPORTANT: Keep the face of hub sleeves even to prevent hub breakage or bolt loosening.

   Tighten hub sleeve bolts to 204 N∙m (150 lb.-ft.) beginning with the center bolt in the lower sleeve, then crisscrossing the other bolts. Retighten bolts to 410 N∙m (300 lb.-ft.) using the same sequence.

   Drive tractor a minimum of 100 meters (100 yd) and tighten bolts to 600 N∙m (445 lb.-ft.).

   Recheck all bolts after working 3 HOURS and again after 10 HOURS.