TM 55-1520-240-23-3
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ENGINE COMPRESSOR CLEANING
(Continued)
4-144
4.
Adjust cleaner reservoir air regulator (6) to 50
psi and customer air source regulator (7) to 60
psi to close bleed band.
5.
Motor engine. Position CLEANER valve (8) to
OPEN for 20 seconds. Position CLEANER valve
(8) to CLOSE.
6.
Stop engine motoring.
7.
During engine coastdown, position AIR/PURGE
valve (9) to OPEN, until lines are purged of
solvent. Position AIR/PURGE valve (9) to
CLOSE.
NOTE
Check that outlet pressure gage
indicates 35 psi.
8.
Adjust air regulator (10) to 100 psi.
9.
Motor engine. Position WATER valve (11) to
OPEN for 40 seconds.
10.
Stop motoring. Position WATER valve (11) to
CLOSE.
11.
During engine coastdown, position AIR/PURGE
valve (9) to OPEN, until lines are purged of water.
Position AIR/PURGE valve (9) to CLOSE.
12.
Decrease compressed customer air source valve
(7) to 0 psi open bleed band.
13.
Start engine and run at idle for two minutes
minimum to dry out engine.
14.
Shut down engine and portable cleaning and
preservation unit (1). (Refer to vendor manual.)
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