TM 5-3810-231-12
c. Installation. Refer to figure 99 and install engine
b. Cleaning, Inspection, and Repair.
coolant heater pump.
(1) Clean all parts in an approved cleaning
solvent and dry thoroughly.
166. Engine Coolant Heater Lines, Hoses, and
Fittings
a. Removal. Refer to figures 98 and 99 and
remove all coolant lines, fittings, and hoses, of engine
coolant heater system.
b. Cleaning and Inspection.
(1) Clean all parts with an approved cleaning
solvent and dry thoroughly.
(2) Inspect all parts for d a m a g e d threads,
distortion, signs of leakage, wear, or other
damage.
Replace all damaged or
defective parts.
coolant lines, fittings, and hoses of engine coolant
heater system.
167. Cab or Component Fresh Air Heater
a. Removal. Refer to figure 100 and remove cab
or component fresh air heater.
b. Cleaning and Inspection.
Figure 100. Cab or component fresh air heater,
(1) Clean all parts with an approved cleaning
removal and installation.
solvent and dry thoroughly.
(2) Inspect all parts for distortion, wear, or
(2) Inspect shutters for distortion, breaks, bends, or
other damage.
Replace a defective
other damage.
heater or mounting hardware.
(3) Straighten all bends and weld all cracks.
c. Installation. Refer to figure 100 and install cab
Replace a shutter damaged beyond repair.
or component fresh air heater.
c. Installation. Refer to figure 102 and install
radiator winter front shutter.
168. Heater Fuel Lines, Fittings, and Valves
170. Wiring
a. Removal. Refer to figure 101 and remove
heater fuel lines, fittings, and valves.
a. General. Wiring of winterized model differs
b. Cleaning and Inspection.
from nonwinterized model, as illustrated on figure 103.
(1) Clean all parts in an approved cleaning
solvent and dry thoroughly.
continuity of leads with a multimeter set on RX1 ohms
scale.
(2) Inspect all parts for distortion, damaged
threads, cracks, leaks, or other damage.
c. Inspection and Repair.
Replace a damaged or defective part.
(1) Inspect all leads for loose connections,
c. Installation. Refer to figure 101 and install
cracked or bare insulation, loose
heater fuel lines, fittings, and valves.
terminals, or broken wire.
(2) Repair by replacing loose terminals,
169. Radiator Winter Front Shutters
tightening connections, or covering worn
insulation with both rubber and friction
tape. Report major damage of wiring
a. Removal. Refer to figure 102 and remove
system to direct support maintenance.
radiator window front shutters.
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