6-14. Compressor Crankshaft and Main Bearings

Figure 6-10. Compressor Crankshaft and Main Bearings, Replace

TM-5-4310-387-14 Compressor Unit Diesel Engine Driven 20 CFM 3200 PSI Model K-20-D Manual
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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). 6-34

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