NMC-WOLLARD 2021Truax Blvd., Eau Claire, WI 54703, Phone (715) 835-3151, Fax (715) 835-6625
M140 Tow Tractor Manual No. 46054
PAGE 3-19
CHAPTER 2 MAINTENANCE
3 REMOVAL AND INSTALLATION
AUGUST 31, 2008
4. Check engagement of coupling and steering gear shaft. Tighten pinch bolt.
5. Tighten nuts on U-bolts to secure steering column.
6. Install steering wheel assembly on steering shaft. Tap into place on shaft
serrations with a soft-faced hammer. Install nut and washer to secure
steering wheel to column.
7. Insert plunger into counterbored hole in steering wheel. Install horn parts.
8. Connect external horn wire. Test operation of horn.
9. Install cover plate.
3.12 FRONT SUSPENSION
The front suspension is comprised of the leaf springs, hangers, brackets, and
hardware needed to secure the springs to the axle and frame.
After initially mounting u-bolts over springs and axle, recheck u-bolt
so may result in axle mounting failure and loss of vehicle control.
3.12.1 Removing the Leaf Springs
1. Using a jack, raise the front of tractor. Support with appropriate jack stands.
2. Raise tractor far enough to relieve tension on springs. Support axle with
jack stands positioned so they will not interfere with spring removal.
3. Remove nuts, lock washers, U-bolts and spring plate.
4. Remove bolt, nut, and lock washer securing front of spring to frame.
5. Lower axle until there is enough clearance to remove spring.
6. Lower front of spring until rear of spring clears seating slot in rear spring
hanger.
3.12.2 Cleaning and Inspection
In order to properly inspect the condition of the springs, clean the spring
assembly with solvent using a brush or a cloth dampened with solvent. Then
inspect the leaves for cracks or breaks. Replace the spring assembly if
damaged.
3.12.3 Installation.
1. Work rear of spring into seating slot in the rear spring mounting plate.
2. Align front of spring bushing bore with hole in frame and install spring front
mounting hardware. Tighten nut to 135 ft-lbs torque.
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