SECTION XV. GENERATOR SET CONTROLS
The engine generator set control assembly consists
of a wiring harness, and an engine generator control
panel assembly. The generator control panel assem-
bly provides a means of controlling engine generator
3-100. DC Control Circuit Breaker.
(1) Depress circuit breaker (27, fig. 3-17)
to insure that it is in the reset position (flush to
(2) Remove screw and lockwasher which se-
cure leads to one terminal of circuit breaker.
(3) With an ohmmeter test circuit breaker for
If meter shows an open circuit, re-
place circuit breaker.
b. Replacement. Replace defective DC CONTROL
CI~CUfT BREAKER (27) as follows:
(a) Tag leads and remove screws and lock-
washers wlich secure leads to DC CONTROL CIRCUIT
(b) Remove DC CONTROL CIRCUIT BREAK-
ER mount~~ hardware and remove circuit breaker.
Install DC CONTROL CIRCUIT
BREAKER using removal steps in reverse order.
3-101. Wiring Harness Replacement.
See figure 3-17 and remove wiring harnesses (1 and
2) as follows:
a. Unplug and disconnect wiring harnesses at
Tag all connectors and electrical
leads to assure position identification during replace-
b. See detail A of figure 3-17, and remove all
scr;ws (3), nuts (4) and clamps (5) securing wiring
harnesses in position.
c. Install new or repaired wiring harnesses in
rev<rse sequence of removal.
3-102. Manual Speed Control.
a. Inspection. Inspect throttle and governor
liti-~es for loose mounting, loose connections, and
b. Test. Check that the throttle and governor
li&~es motion is smooth and unrestricted. A
90-degree rotation of the manual speed control
knob shall provide a linear cable movement of
0.036 + 0.005 inch.
(1) Disconnect negative lead from the battery.
On Class 1 sets, remove screws (11, fig. 3-17) which
secures cover (12) and remove cover.
(2) See detail B and remove manual control
assembly (21 ) by loosening screw (13) and removing
nut (16), washer (1 7), nut (18), nut (19) and washer
3-103. Fault Indicator.
See figure 3-17 and proceed as follows
a. Inspection. Inspect FAULT INDICATOR panel
(10~ for cracks, Iireaks, and other damage.
Test the fuse as described below:
(1) Open DC CONTROL CIRCUIT BREAKER
(27, fig. 3-17).
(2) Unscrew fuseholder cap (24), and remove
(3) Using ohmmeter, check that continuity exists
through fuse and open circuit is not in effect.
(4) Install existing fuse, or replacement fuse
as necessary, and replace fuse holder cap (24).
(5) Remove the harness plug from the back of
the fault indicator control box.
Apply 24 Vdc to pins
12-A (positive) and 12-B of the fault indicator recep-
(6) Sequentially jump pin C of the fault indicator
receptacle to the pins listed in table 3-2 of the fault
The light that corresponds to
the particular fault opposite the pin numbers should
light and stay lit. Reset the lights with the TEST OR
RESET switch before proceeding to the next set of
pins. If the correct light does not light up or if an in-
correct light lights, the fault indicator control box
must be replaced.
See figure 3-17 to remove and
ins&H FAULT INDICATOR panel (10).
d. Lamp and Fuse.
To replace indicator lamp and
fus~, see detail C of figure 3-17 and proceed as follows
(1) Unscrew lens (22) and remove lamp (23).