Rack-and-Pinion Axles, Hub Diameter 86 mm / 92 mm - Adjust Tread Widths for Cast Rear Wheels

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

1. Jack up the tractor on level ground and turn the wheel as shown so that adjusting pinion (D) is at the top as shown.

   
   LX315169-UN-04JUN18

   A - Middle Attaching Screws of the Half-Shells

   B - Attaching Screws of the Half-Shells

   C - Jack Screws

   D - Adjusting Pinion

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2. Unfasten screw (A) against retaining nut.

3. Unfasten screws (B).

4. To unfasten or push off the half-shells, tighten jack screws (C). Tighten screws to 550 N·m (405 lb-ft) if necessary.

   NOTE: If half-shells are difficult to break loose, use penetrating oil and strike the end of the axle with a heavy hammer.

5. Set desired tread width with adjusting pinion (D). Observe tread width limitations.

6. Loosen jack screws (C) all the way to stop.

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

   IMPORTANT: Keep the faces of half-shells even to prevent the hub from breaking or the screws coming loose.

7. Make sure the half-shells are seated properly and tighten the attaching screws as follows.

   1. Tighten screw (A) and then screws (B) crosswise to 204 N·m (150 lb-ft).

   2. Retighten screws to 410 N·m (300 lb-ft) using the same sequence.

   3. Drive tractor a minimum of 100 meters (100 yd) and tighten bolts to 550 N·m (405 lb-ft).

      IMPORTANT: After 3 operating hours and 10 operating hours, retighten all screws daily during the first week of operation and then every 250 operating hours thereafter.

8. Tighten jack screws (C) finger-tight.