NMC-WOLLARD 2021Truax Blvd., Eau Claire, WI 54703, Phone (715) 835-3151, Fax (715) 835-6625
M140 Tow Tractor Manual No. 46054
PAGE 1-28
CHAPTER 2 MAINTENANCE
1 SERVICING
AUGUST 31, 2008
a. Remove plastic plug from transmission base and protective cap form
modulator body. Make sure that the modulator valve actuating rod is in
place inside transmission case. (On some models, the rod is retained
opening.
b. The necessary clip and fastener are provided with the transmission. Fit
the retaining clip to the groove in the neck of the modulator as shown
in (Figure 6). Fit fastener and tighten to 180 - 240 lb. ins. (20.3 - 27.1
Nm).
c. Route cable and secure cable hub to mounting bracket at fuel control
lever. Make sure that the cable bend radius is not less than 4 ins.
(101.6 mm) and that the cable is clear of exhaust system and other
engine hot spots. Support cable if necessary but do not crush conduit.
2. Attach a hydraulic pressure gauge 0 to 300 PSI (0 - 2068.4 Kpa) to the
4. Engine idle transmission line pressure check. Lock emergency brake,
apply foot brake and block non-drive wheels. Adjust cable on modulator to
obtain the following line pressures:
Transmission in neutral or drive 45 - 90 PSI (310.3 - 620.5 ).
Transmission in reverse 55 - 140 PSI (379.2 - 965.3 Kpa).
Some cable adjusting may be required to obtain full travel of the modulator
cable, as follows:
a. Move fuel control lever to wide open throttle (W.O.T.) position. Pull
its internal stop. Adjust cable terminal to provide a free pin condition to
NOTICE! The Felsted Modulator is designed with positive stop at both ends of
1.5 ins. (38.1 mm) travel. Therefore, cable terminal (slip-link) must allow lever
to return to idle regardless of cable position.
b. Check for proper return to idle and ease of movement.
5. Engine full throttle transmission line pressure check. With brakes engaged
and non drive wheels blocked gradually accelerate engine to full throttle.
Pressure should increase to the following at full throttle.
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