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 TM 55-1905-221-14-2
5-30.
TRANSMISSION CONTROL VALVE.
LOCATION/ITEM
ACTION
REMARKS
GENERAL
The control valve assembly consists of a master selector valve for controlling both engines of the power unit
simultaneously and separate shutoff control valves for controlling the flow of the oil to each individual engine marine
gear. Three oil passages, for forward drive, for reverse drive, and for neutral and lubrication, are provided in each
reverse gear housing. Oil grooves and passages are machined in the selector control valve so that, when it is rotated to
the forward position by the lever, oil is admitted to the forward oil passage in the gear housing. When the selector control
valve is rotated to the reverse position, oil is admitted to the reverse oil passage. The neutral (lubricating) oil passage is
never cut off regardless of the position of the selector control valve.
This task covers:
a.
Inspection
d. Cleaning
g. Reassembly
b.
Removal
e. Inspection
h. Installation
c.
Disassembly
f. Repair/Replacement
INITIAL SETUP
Test Equipment
References
NONE
NONE
Equipment
Special Tools
Condition Condition Description
Paragraph
NONE
NONE
Tools
Special Environmental Conditions
General Mechanic's Tool Kit
NONE
NSN 5180-00-629-9783
Safety goggles
Material/Parts
Cleaning solvent P-D-680
Sealing compound
Personnel Required
General Safety Instructions
MOS 61C10
Observe WARNING in procedure.
in procedure.
5-540
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