CHAPTER 17
KIT AND OPTIONAL EQUIPMENT REPAIR INSTRUCTIONS
Section I. FUEL BURNING WINTERIZATION KIT
17-1. Introduction.
This chapter contains intermediate (field) (direct and
general support) and depot repair instructions for the
kits and optional equipment of the generator sets.
17-2. General.
The fuel burning winterization kit is available as an
aid in starting the generator set in temperatures from
-25° F to -65° F.
The kit consists of a heater, which
burns fuel from the engine fuel supply, a control
panel, and the necessary plumbing which will route
coolant through the heater and to the oil pan heat ex-
changer and engine water jacket through an outlet at
the front of the cylinder block and back to the heater.
A thermostat on the engine cylinder head starts and
stops the heater according to coolant temperature
when the system is operating.
17-3. Troubleshooting.
Troubleshoot the fuel-burning winterization kit using
table 17-1. Typical malfunctions, the possible causes
and the necessary corrective actions are tabulated.
17-4. Removal and Disassembly.
a. Removal.
Refer to Operator and Organizational
Maintenance Manual and remove fuel-burning winteriza-
tion kit.
b. Disassembly.
(1) See figure 17-1 and disassemble the fuel -
burning heater.
Disconnect and tag leads sequentially
during disassembly procedure.
(2) See figure 17-2 and disassemble the fuel-
burning heater control box. Disconnect and tag leads
sequentially during disassembly procedure.
17-5. Fuel Burning Heater Control Box Testing,
Repair and Replacement.
a. Test of Circuit Breaker.
(1) Disconnect connector.
(2) Using an ohmmeter with the R x 1 scale
selected, read across the circuit breaker. With the
circuit breaker in the closed position (ON) the reading
should be zero (0) ohm.
(3) Open the circuit breaker (OFF), select the
x 100 scale, the meter should indicate infinity ohms.
(4) Connect the circuit breaker between a
28 Vdc source and a resistive load such that the cur-
rent draw from the source is 16.73 amperes. The
circuit breaker should not trip. If the circuit breaker
trips, replace the circuit breaker.
b. Test of Power Switch.
(1) Disconnect connector.
(2) Using an ohmmeter set scale
for continuity between terminals 4 to 6
the ON position.
If defective, replace.
to RI. Check
and 1 to 3 in
c. Replacement of Light Assembly.
(1) Disconnect connector J26.
(2) Disconnect and tag leads sequentially.
(3) Remove lens cap and locking bolt. Remove
light assembly from rear of panel.
(4) Replace in reverse order.
d. Replacement of Circuit Breaker.
(1) Disconnect connector J26.
(2) Disconnect and tag leads.
(3) Unscrew holding nut and lock washer. Re-
move circuit breaker from rear of panel.
(4) Replace in reverse order noting the proper
placement of locating lug.
e. Replacement of Power Switch.
(1) Disconnect connector J26.
(2) Disconnect and tag leads sequentially.
(3) Remove mounting hardware and extract the
switch through the rear of the panel.
(4) Replace in reverse order noting that ON is
to be in the up position.
17-6. Cleaning.
a. Clean all metal parts with cleaning solvent
Federal Spec P-D-680 and dry thoroughly.
b. Clean electric motor, micro-switch, limit switch,
thermostat, preheater elements and all electrical con-
nectors and wiring with a cloth moistened with cleaning
solvent Federal Spec P-D-680. Do not submerge elec-
trical components in cleaning solvent.
c. Clean all orifices, sintered filter and screen to
make sure they are free from any obstruction.
17-1
