NMC-WOLLARD 2021Truax Blvd., Eau Claire, WI 54703, Phone (715) 835-3151, Fax (715) 835-6625
M140 Tow Tractor Manual No. 46054
PAGE 1-9
CHAPTER 2 MAINTENANCE
1 SERVICING
AUGUST 31, 2008
4.
1.4.2 Lubricate Grease Fittings
Figure 1 for locations.
1.
2. Using a grease gun, apply grease until clean grease oozes from between
the mating parts.
3.
1.4.3 Inspect Drive Shaft, Steering, Suspension, and Front Axle
Components
1. Inspect drive shaft by trying to move shaft sideways and up and down. If
there is any movement in the U-joint, replace the U-joint. An indication of a
worn U-joint is a regular squeak when the tractor is moving.
2. Using an appropriate torque wrench, check drive shaft bolt torque. Torque
should be to 70 ft/lbs.
3. Inspect steering gear assembly, steering column assembly, drag link,
pitman arm, and column support bracket for looseness; cracked, broken,
or bent parts; and seal leaks. Replace all damaged parts.
4. Check front axle for worn, bent, cracked, or otherwise damaged parts.
Replace all damaged parts.
5. Make sure pivoting members turn freely through complete turning radius.
6. Check knuckle bushings for wear.
a.
b. Grab top of tire with both hands and move tire towards and away from
the tractor. Grab bottom of tire and do the same. Any movement should
be almost unnoticeable (no more than 0.010-inch). If movement is
excessive, replace all knuckle bushings. Lower tractor to ground.
7. Check tie rods for wear. Grab and try to move the tie rod tube in any
direction. If any movement or looseness is felt, replace the ball joint
assemblies.
8. Check tires for uneven wear patterns which might suggest axle
misalignment or damage.
9. Check fastener torque according to values in Section 1.
10. Inspect hoses for softness, swelling, cracking, abrasion, etc. Inspect
11. Replace hoses and components that show signs of damage or
deterioration.
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