TM 3-1040-26334
Bolt, machine (fan) ..................... 21 to 23
3rd-stage 0.035 to 0.041 inch
Nut, flared tube .........................3 to 5 (36 to 60 lb. in.)
Diametral clearance, compressor group.
Screw, fan guard bracket ..........4 to 5 (48 to 60 b. in.)
(2)
Screw, angle bracket ..................4 to 5 (48 to 60 lb .in.)
Screw, fan guard .......................3 to 4 (36 to 48 lb. in.)
Plunger-to-cylinder, 3rd-stage 0.00025 to 0.00030 inch
Bolts, pulley to engine.................10 to 12
Plunger-to-cylinder, 2nd-stage ... 0.0003 to 0.0014 inch
1st-stage heat exchanger ...........3.3 to 5.2 (39.6 to 62.4
Piston-to-cylinder, 1st-stage....... _ 0.0012 to 0.0025 inch
lb. in.)
Piston pin-to-piston, 1st-stage.... 0.0001 to 0.0006 inch
Aftercooler nuts .........................11.2 to 12.5
Piston pin, 1st-stage-to-key-
2nd-stage heat exchanger..........3.3 to 5.2 (39.6 to 62.4
stone ............... ......................... 0.0007 to 0.0013 inch
lb. in.)
Keystone-to-crankshaft . ........... 0.0006 to 0.0013 inch
3rd-stage heat exchanger ..........11.2 to 12.5
Pump shaft-to-pump housing ..... 0.0015 to 0.0030 inch
Bolts, compressor flange to
Pump shaft-to-gerotor ................ 0.0005 to 0.0015 inch
gasoline engine .........................7.5 to 9.0 (90 to 108
lb. in.)
(3) Side clearance, compressor group.
Bolts, clip angles to gasoline
engine............... ......................... 5 to 7 (60 to 84 lb. in.)
Gerotor ............. ......................... 0.0015 to 0.0030 inch
Nuts, tube oil supply ...................5 to 6 (60 to 72 lb. in.)
Piston pin, 1st stage (end
Screws, gasoline engine to
play).................. ......................... 0.001 inch max.
lower frame....... .........................3 to 4 (36 to 48 lb. in.)
(2) Water separator.
(4) Crankshaft diametral tolerance, compressor
group.
Relief valve fitting .....................5.0 to 6.6 (60 to 79.2
lb. in.)
Seating surface, rear bearing..... 1.5749 to 1.5753 inch
Valve, relief ...... .........................3.3 to 5.2 (39.6 to 62.4
Seating surface, keystone
lb. in.)
assembly .......... ......................... 0.8750 to 0.8753 inch
Cap .................. .........................14.0
Interface surface, oil pump
Nut, elbow ........ .........................11.2 to 12.5
shaft ................. ......................... 0.7188 to 0.7190 inch
(3) 2nd stage relief valve.
(5) Oil pump shaft diametral tolerance,
compressor group.
Retainer seat .. .........................1 (12 lb. in.)
Interface surface, internal,
(4) Compressor.
crankshaft ........ ......................... 0.7185 to 0.7188 inch
Seating surface, front bearing ....
0.9844 to
Studs, 1st stage .........................3.3 (39.6 lb. in.)
0.9847 inch
Nuts, 1st stage ........................2.5 (30lb.in.)
Seating surface, fan interface ....
0.466 to 0.467
Screws, 2nd stage .....................3.3 (39.6 lb. in.
inch
Screws, 3rdstage........................3.3 (39.6 lb. in.)
Seating surface, oil seal ............. 0.6248 to 0.6250 inch
Plug, sump drain port .................4 to 5 (48 to 60 lb. in.)
Filter, oil sump .. .........................4 to 5 (48 to 60 lb. in.)
(6) Keystone assembly bore diameter tolerance,
compressor group.
c. Fits and Tolerances. Listed below are
manufacturing assembly clearances and tolerances.
Bore, crankshaft ......................... 0.8759 to 0.8763 inch
Bore, first-stage piston pin ......... 0.5008 to 0.5012 inch
(1) Head clearance, compressor group.
(7) First-stage piston pin diameter tolerance,
1st-stage .......................0.040 to 0.045 inch
compressor group.
2nd-stage ...................... 0.035 to 0.041 inch
Diameter, outside ....................... 0.4998 to 0.5001 inch
(8) First-stage piston bore diameter tolerance,
compressor group.
Bore, first-stage piston pin ......... 0.5002 to 0.5005 inch
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