regulator (43, fig. 7-64). Attach blue regulator lead to
diode terminal screw by placing the spade terminal under
the head of the screw. Tighten nut on terminal screw
black leads are properly routed through their slots in the
regulator housing (37, fig. 7-64). Install the four screws to
fasten regulator in housing. Remove brush retaining pin
before tightening the screws.
(18) Install diode trio lead and nut.
amount of shaft end play will be present in
new or rebuilt units. This end play Is designed
Into the unit and will vary between .004- and
(19) Install spacer (4), key (11), fan (3), pulley (2),
and nut (1). Tighten nut to 70-80 lb.-ft.
Section IV. TEST AND ADJUSTMENTS
exhaust pipe or use sweeping, large radius elbows. Use a
section of seamless, flexible tubing between the engine
and any rigid pipe to restrict vibration. Increase exhaust
a. This section contains the test and adjustment
pipe one size larger for each additional 10 feet of length.
procedures that are required to be performed on a rebuilt
or repaired engine. These tests must be performed with
engine installed on semitrailer, and with batteries, control
c. For engine operating instructions, refer to
boxes, fuel supply filters, and electrical supply hooked up
to the engine.
Air Shutter Test and Adjustment
Thermo Power Unit Assembly Test. Immerse the
thermo unit (26, fig. 7-44) into a container of oil while
Carbon monoxide is a colorless, odorless,
monitoring the oil temperature. Plunger of thermo unit
and deadly poisonous gas which occurs in
should start to extend when temperature reaches 120F.
the exhaust fumes of the auxillary power en-
Total extension at 140F should be at least 13/64-inch.
gine. Exposure to air contaminated with car-
Replace thermo unit if it does not operate properly.
bon monoxide produces symptoms of
headache, dizziness, loss of muscular con-
trol, apparent drowsiness, and coma. Perma-
nent brain damage or death can result from
severe exposure to carbon monoxide gas.
from upper shutter. Adjust ball joint until upper shutter
closes tightly on lower shutter when lower shutter is held
Engine must be properly vented to exhaust the
closed. Reattach ball joint to upper shutter.
engine to outside air. If possible, avoid sharp bends in