TM 5-3805-248-23-2
AIR COMPRESSOR REPAIR - CONTINUED
0377 00
ASSEMBLY - CONTINUED
8.
Install plug (70) in cylinder block (6).
69
9.
Install two plugs (72) in cylinder block (6).
10.
Align match-marks and install new gasket (71) and
73
cylinder block (6) on crankcase (7) with six lockwash-
ers (73) and bolts (69). Torque two center bolts to 8 lb-
6
ft (11 Nm), then torque other four bolts to 8 lb-ft (11
Nm). Torque two center bolts again to 21 lb-ft (28
Nm), then torque other four bolts to 21 lb-ft (28 Nm).
70
72
71
7
394-1509
NOTE
Piston rings usually have a dot or the word TOP to indicate which side of ring faces top of piston.
11.
Install new oil expander ring (66) on piston (64).
63
12.
Install two new oil rings (68) on piston (64).
62
63
13.
Measure gap clearance of two oil rings (68). Clearance
64
should be 0.015-0.055 in. (0.381-1.397 mm). If mea-
surement is larger than specified, replace piston (64).
65
If measurement is smaller than specified, clean piston.
62
14.
Measure side clearance of two oil rings (68). Measure-
ment should be 0.0005-0.0021 in. (0.0127-0.0533
mm). If measurement is larger than specified, clean
66
68
piston (64). If measurement is smaller than specified,
replace piston.
15.
Install four new compression rings (63) on piston (64).
67
16.
Measure gap clearance of four compression rings (63).
Clearance should be 0.002-0.007 in. (0.0508-0.1778
mm). If measurement is larger than specified, replace
piston (64). If measurement is smaller than specified,
394-1506
clean piston.
0377 00-8
