TM 5-4310-387-14
6-14. Compressor Crankshaft and Main Bearings
This task covers:
Replace
INITIAL SETUP
Tools
General Mechanic's Tool Kit (NSN 5180-00-177-7033)
Wrench, Torque (NSN 5120-00-247-2540)
Materials/Parts
Gasket
Preformed Packing
Bearing
Lubricating Oil (Item 17, Appendix D)
Equipment Condition
First stage piston assembly removed (para. 6-9).
Second stage piston assembly removed
(para. 6-11).
Crosshead assembly removed (para. 6-13).
Reference
Appendix F Torque Values.
Replace. (figure 6-10)
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
Chapter 4, Section VI of this manual. Foreign substances within an assembly could result in
equipment failure and possible injury or death to personnel.
(1)
Remove four screws (1), washers (2), plate (3), and gasket (4). Discard gasket (4).
(2)
Remove two screws (5), plate (6), and oil pump cam (7).
(3)
Remove six screws (8), washer (9), housing (10), and preformed packing (11). Discard preformed packing
(11).
(4)
Remove crankshaft (12).
(5)
Remove bearing (13) from crankshaft (12).
(6)
Remove nut (14), washer (15), bolt (16), and balance weight (17).
(7)
Note orientation of connecting rods (18), (19), and (20) and two spacers (21) and (22) and remove
from
crankshaft (12).
(8)
Press bearing (23) out of housing (10).
(9)
Press new bearing (23) into housing (10).
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