TM55-2840-251-23
SECTION VIII GENERAL MAINTENANCE PROCEDURES (Continued)
1-77
CLEANING (Cont)
Appearance: Free of suspended solids
Total solids: 175 ppm maximum
Ph: 6.0 to 8.0 inclusive
Chlorides:
15 ppm maximum
Sulphates: 10 ppm maximum
TABLE 1 - WASH SCHEDULE
OPERATING
NATURE OF
ENVIRONMENT
WASH
FREQUENCY
REMARKS
Continuously
Salt
Daily
When the exterior of an
salt laden
Removal
engine is contaminated with
salt, an external engine
wash should be carried
out, using fresh water.
A salt-contaminated engine
is not to be left for an
extended period of time,
such as overnight, without
cleaning.
Occasionally
Salt
Weekly
Adjust washing frequency
salt laden
Removal
to suit engine condition.
All
Perform-
100 to
Performance recovery
ance
200 hours
washes are required less
Recovery
frequently. Adjust wash-
ing frequency to suit
engine operating conditions
as indicated by engine
NOTE
condition trend monitoring
system. A motoring wash
Multiple motoring wash should
for light soil or
be performed to the extent
multiple motoring washes
permitted by starter opera-
for heavy soil contamina-
ting limitations. Observe
tion is recommended.
starter cooling period.
(Refer to TM 55-1520-209-10.)
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