FRONT AXLE
STW34, STW37, STW40, WSM
6-S4
4. CHECKING, DISASSEMBLING AND SERVICING
[1] CHECKING AND ADJUSTING
Adjusting Toe-in
1. Park the tractor on the flat place.
2. Inflate the tires to the specified pressure.
3. Turn the steering wheel so that the front wheels are in the
straight ahead position.
4. Lower the implement, lock the parking brake and stop the
engine.
5. Measure distance between tire beads at front of tire, hub height.
6. Measure distance between tire beads at rear of tire, hub height.
7. Front distance should be 2 to 8 mm (0.079 to 0.315 in.) less than
rear distance.
8. If the measurement is not within the factory specifications,
adjust by changing the tie-rod length.
Adjusting
1. Remove the snap ring (1) from the dust cover (4).
2. Loosen the tie-rod lock nut (2) and turn the tie-rod joint (3) to
adjust the tie-rod length until the proper toe-in measurement is
obtained.
3. Retighten the tie-rod lock nut (2).
4. Attach the snap ring (1) to the dust cover (4).
• A right and left tie-rod joint is adjusted to the same length.
9Y1211109FAS0004US0
Front Axle Rocking Force
1. Jack up the front side of tractor.
2. Remove the front wheels.
3. Set a spring balance to the front wheel mounting stud bolt with
nut.
4. Measure the front axle rocking force.
5. If the measurement is not within the factory specifications,
adjust with the adjusting screw (1).
6. After adjustment, tighten the lock nut (2) firmly.
(When reassembling)
9Y1211109FAS0005US0
Toe-in ((B)-(A)) Factory specification
2 to 8 mm
0.079 to 0.315 in.
Tightening torque Tie-rod lock nut
117 to 137 N·m
12 to 14 kgf·m
86.8 to 101.3 lbf·ft
(1) Snap Ring
(2) Tie-rod Lock Nut
(3) Tie-rod Joint
(4) Dust Cover
(A) Wheel-to-wheel Distance at Front
(B) Wheel-to-wheel Distance at Rear
(C) Front
Front axle rocking force Factory specification
49.0 to 117.7 N
5.0 to 12.0 kgf
11.0 to 26.5 lbf
Tightening torque
Adjusting screw lock nut
39.2 to 45.1 N·m
4.0 to 4.6 kgf·m
28.9 to 33.3 lbf·ft
Front wheel mounting
screws and nuts
77.5 to 90.2 N·m
57.1 to 66.5 lbf·ft
(1) Adjusting Screw (2) Lock Nut
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