NMC-WOLLARD 2021Truax Blvd., Eau Claire, WI 54703, Phone (715) 835-3151, Fax (715) 835-6625
M140 Tow Tractor Manual No. 46054
PAGE 1-20
CHAPTER 2 MAINTENANCE
1 SERVICING
AUGUST 31, 2008
9. Using a common wire-brush type battery tool, brush battery posts and
inside of cable ends.
10. Reattach positive cable, then negative cable, to correct battery post.
1.6 EVERY 1000 HOURS OR 1 YEAR
1.6.1 Toe-In Adjustment
Toe-in is a condition in which the front of the tires are closer together than
the back. This is used to compensate for the natural tendency of road-to-tire
friction to force the wheels apart. If the wheels were set parallel (no toe-in),
steering linkage wear would allow the wheels to actually toe-out. By setting a
certain amount of toe-in, the wheels will be nearly parallel in actual use.
should be checked using a toe gauge or trammel.
1. Jack up each front wheel and chalk a band near center of tire while
spinning the wheel.
2. Use a sharp-nosed scriber to form a thin line near the center of the chalk
band while spinning the wheel. Keep the line THIN.
3.
complete turn. Wheels should point straight ahead. This will impart a
rearward thrust to the wheels and will provide an accurate toe-in reading.
4. Move toe-in gauge to behind wheels. Set pointers exactly on scribed
lines. Top of pointers should be as near the center of the spindle height as
possible.
5. Carefully remove gauge without altering pointer setting. Align one pointer
with scribe mark on the front of one of the tires. Check distance between
the other pointer and scribe mark on other tire. The distance will indicate
amount of toe-in or toe-out present.
6. Loosen tie rod jam nuts and rotate tube to obtain 0.15 .030 (5/32 1/32)
toe-in./
7. Tighten jam nuts to secure adjustment.
1.6.2 Wheel Bearings
1. To provide adequate working space under tractor, raise front of tractor with
jack and support tractor with appropriate jack stands. Position jack so it
does not interfere with work.
2. Remove front wheel and tire assemblies, see 2-4 - 4.2.
3. Remove center cap from hub.
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