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Page Title:
Table 3. Manifold Heater System Troubleshooting Procedures - continued |
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 TM 9-2320-361-24-1
0006 00
MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd)
Table 4. Cooling System Troubleshooting Procedures (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. Inspect drivebelts for damage
Replace any damaged parts and
1. ENGINE TEMPERATURE
and check belt tension.
adjust drivebelts (WP 0084 00).
GAUGE ABOVE 230 F
(110 C) (Contd)
5. Inspect fan for broken or missing
If blades are broken or missing,
blades.
replace fan (WP 0075 00).
6. Inspect radiator for bent fins.
Straighten bent fins, or replace
radiator (WP 0077 00).
7. Start engine. Remove radiator
1. If coolant is not circulating
cap and visually check coolant
properly, stop engine, remove
for proper circulation and milky
thermostat, and test or replace
film.
2. If milky film is present, check
cylinder head and gaskets for
defects (WP 0027 00).
8. Check for clogged or broken
For cleaning and flushing
radiator (TM 750-254).
instructions, refer to TB 750-651
9. Check operation of temperature
Replace damaged temperature
gauge (WP 0095 00).
gauge (WP 0014 00, table 1,
malfunction 2).
1. Start engine. Remove radiator
If coolant is circulating below
2. ENGINE DOES NOT
cap and visually check coolant
100 F, remove and test thermostat.
REACH NORMAL
for proper circulation. Stop
Replace if defective (WP 0081 00).
OPERATING
engine.
TEMPERATURE
2. Test coolant temperature gauge,
Replace damaged components.
sending unit, and electrical
circuits (WP 0014 00, table 1,
malfunction 2).
1. Pressurize cooling system and
1. Tighten loose clamps, fasteners,
3. COOLANT LOSS DURING
check for leaks.
or fittings.
NORMAL OPERATION
2. Replace leaking hoses and/or
water pump (WP 0078 00 or
Relief pressure should be 15 psi
2. Check radiator cap for proper
(103 kPa). Replace radiator cap if
relief pressure (TM 750-254).
defective.
3. Check for coolant in oil.
If coolant is found in oil, check
cylinder head and gaskets for
defects (WP 0027 00).
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