7-82. Tachometer Recalibration
a. Remove six screws which secure the instrument
panel and tilt the panel outward for access to the back of
Start engine. Use a stroboscope and flash on
engine-pump coupling. Increase engine speed until
stroboscope reads 2000 rpm.
Using a small screwdriver, turn adjusting screw
Release throttle and stop engine.
Close the instrument panel and fasten with six
(2) Thermo Unit(Fig. 7-72). With engine
temperature, loosen thermo unit guide mounting screws.
The mounting holes in the shutter box are slotted. Slide
the assembly to a position where the thermo unit plunger
rests on roll pins with shutters closed. Tighten mounting
High Temperature Switch Test
7-84. Governor Speed and Sensitivity Adjustment
The solenoid plunger should
fully stops injection when in the de-energized position.
To adjust the plunger length, turn the adjusting
screw and jamnut on the plunger bottom in or out.
If the plunger sticks, remove the fuel stop