GENERATOR SET TEST AND INSPECTION AFTER REPAIR OR OVERHAUL
Section I. GENERAL REQUIREMENTS
9-1. GENERAL INFORMATION.
tests and inspections specified herein. Activities per-
forming maintenance on any portion of the Generator
Set must perform those tests and inspections required
The activity performing the repair or overhaul is
by the applicable component or system repair in-
responsible for the performance of all applicable
Section II. INSPECTION
Inspect entire unit for loose, missing, or damaged parts. Check that
each part is properly painted and protected against corrosive climate
conditions. Check that all parts are properly stowed on unit when not
in use. On ASK equipped generators, cover must be removed for
inspection and test and replaced at completion of task. Refer to Oper-
ator and Organizational Maintenance Manual for removal and instal-
lation of ASK cover assembly.
9-3. ENGINE COOLING SYSTEM.
Check that all cooling system parts are in place.
Check that there is sufficient clearance between engine
fan and blower housing and grille to prevent rubbing
or binding. Check that shutter assembly operates
freely, without binding.
9-4. WIRING HARNESSES.
Inspect to see that all wiring harnesses are properly
connected and that all connectors are tight. Check that
all wires are secured away from moving parts which
might damage wires.
Section III. OPERATIONAL TESTS
9-5. GENERATOR AND GENERATOR CONTROL CIR-
Test per table 9-1.
Resistor R3 (20, figure 6-10) in the output
control box, must be adjusted as follows be-
fore performing any tests:
a. Remove wire D26F16 from TB3- 1 and connect 0
to 1 amp ac test ammeter as shown in figure 9-1.
b. Place output control switch in 120
c. With the generator operating at rated speed
(1800 RPM) the generator field can be flashed by
placing the master switch on the control box in the
d. Close the circuit interrupter and apply rated
e. Adjust R3 until ammeter previously installed
reads 0.6 amps. Tighten locknut on R3. R3 is now ad-
f. Disconnect test equipment and proceed with test-
ing in accordance with test schedule table 9-1.
9-6. ENGINE CONTROL CIRCUITRY.
a. Test Equipment.
Batteries, 24 volts lead acid (BT1 and 2).
Switch, SPST S1, S2).
Lamps, 24V (Ll, L2, L3, L4, L5, L6, L7).
b. Test Setup. Connect control box and test equip-
ment as shown in figure 9-2.