TM 5-4930-244-14
5-8.
AIR PUMP - REPAIR.
This Task Covers:
a.
Disassembly
b.
Repair
c.
Assembly
Initial Setup:
Tools and Test Equipment Required
Tool Kit, General Mechanic's: Automotive (Appendix B, Section III, Item 1).
Common Tool Kit #1 (Appendix B, Section III, Item 2).
Materials/Parts Required
Dry cleaning solvent (Appendix E, Section II, Item 3).
Primer, Sealing Compound (Appendix E, Section II, Item 4).
Sealing Compound (Appendix E, Section II, Item 5).
Gasket, Upper Kit (Appendix H, Section II, Item 52).
Gasket, Lower Kit (Appendix H, Section II, Item 53).
Gasket (Appendix H, Section II, Item 54).
Equipment Condition
Unit shut down and cool.
Enclosure Removed (para. 4-13).
Belts Removed (para. 4-31).
Air Pump Removed (para. 4-34).
a.
Disassembly.
(1)
Remove nut (1, Figure 5-8) and washer (2) securing flywheel (3) to crankshaft (4).
(2)
Remove flywheel (3) from crankshaft (4).
(3)
Disconnect intercooler (5) from cylinder head fitting on high pressure side, elbow on low pressure side.
(4)
Remove four bolts (6) from bearing retainer (7).
(5)
Remove seal retainer (8) and gasket (9) from bearing retainer (7). Discard gasket (9).
(6)
Remove woodruff key (10) from crankshaft (4).
(7)
Remove crankshaft vent tube (11) from vent tube fittings (12).
(8)
Remove oil level gauge (13) and gasket (14) from crankcase cover (15). Discard gasket (14).
(9)
Remove four bolts (16) and crankcase cover (15) from crankcase (17).
(10)
Remove lower gasket (18) from crankcase (17). Discard lower gasket (18).
(11)
Remove four bolts (19) and round disk (20) from crankshaft (4).
(12)
Remove six bolts (21) holding bearing retainer (7) onto crankcase (17).
(13)
Slide bearing retainer (7) and crankshaft (4) from connecting rods and crankcase (17).
(14)
Place the crankshaft (4) in a suitable press and carefully remove the oil seal (22) and two tapered bearings
(23) from the crankshaft (4).
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