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 TM 55-1905-223-24-5
Table 2-1. Preventive Maintenance Checks and Services (PMCS)
D-Daily
M-Monthly
Q-Quarterly
A-Annually
B-Biennially
Item
Interval
Items To Be
No.
DMQAB
Inspected/Serviced
Procedures
20
Coolant Heater
Inspect the beater assembly for corrosion.
Refer to paragraph 2-32.
21
Safety Controls
NOTE
Engine safety controls should be hooked up
to a horn or other warning device.
Check the High Water Temperature Control
a. Remove the sensing unit and check the closing of the circuit against a
thermometer immersed in water.
b. Heat the water to activate the temperature control The horn or warning device
should sound at, or near, 200 (93 ).
F
C
c. Replace sensing unit if necessary.
Check the Lubricating Oil Pressure Sending Device.
a Check for broken electrical wiring.
b. Check for loose or broken sending device.
Change 2
2-18
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