TM 5-4310-379-14
5-31. Compressor Pistons, Connecting Rods, and Bearings
This task covers:
a.
Replace
b.
Repair
INITIAL SETUP:
Tools
Materials/Parts (Cont)
General Mechanic's Tool Kit (NSN 5180-00-177-7033)
Detergent, Nonionic (Item 10, Appendix D)
Caliper Set, Micrometer (NSN 5210-00-554-7134)
Connecting Rod, Low Pressure
Cir-Clip Pliers (NSN 5120-00-789-0492)
Connecting Rod, High Pressure
Ring Compressor (NSN 5120-00-223-8848)
Gasket, Cylinder
Torque Wrench (NSN 5120-00-554-7292)
Tape (Item 24, Appendix D)
TSP Ultrasonic Cleaner W/Heater (Item 35,
Bands, Rubber (Item 5, Appendix D)
Appendix B)
Bags, Plastic (Item 4, Appendix D)
Water, Distilled (Item 11, Appendix D)
Materials/Parts
Equipment Condition
Piston, Low Pressure
Piston, High Pressure
Cylinder head removed (para.
5-29).
a.
Removal. (figure 5-45)
WARNING
Cleanliness is imperative in maintaining and handling diving air system components. All tools
and parts must be kept free of oil, grease, rust, or other contamination in accordance with
accepted army diving cleaning procedures. Foreign substances within an assembly could result
in equipment failure and possible injury or death to personnel.
Ensure that all air lines and components removed or openings into the air system that provides
breathing air are covered with a plastic bag and secured with a rubber band or taped shut. Small
components should be stored in a plastic bag and sealed. Failure to do so will cause air system to
become contaminated and could result in injury or death to the diver.
NOTE
There are two pistons and connecting rods in each cylinder. Removal of each is the same.
(1)
Remove drain plug (1) and drain oil into suitable container.
(2)
Remove ten screws (2) securing handhole plate (3) on side, opposite the cylinder head being removed.
(3)
Remove and discard handhole plate gasket (4).
(4)
Turn pulley (5) as necessary to allow removal of connecting rod nuts (6), washers (7), and bolts (8).
5-140
