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TM 9-2320-364-34-4
26-8
26-2. AIR COMPRESSOR REPAIR (CONT).
(15)
Inspect upper connecting rod bearing half (32) and lower connecting rod bearing half (24) for scoring,
pitting and cracks.
(16)
Position upper bearing half (32) on connecting rod (25) and install on crankshaft journal (41).
(17)
Lay piece of plastigage on crankshaft journal (41).
NOTE
Locating tabs on bearing halves are installed in notches of rod caps.
(18)
Install rod cap (23) with lower bearing half (24) on crankshaft journal (41) and upper bearing half (32)
and secure with two screws (22). Tighten screws to 105 to 135 lb-in (12 to 15 N.m).
(19)
Measure clearance between side of rod cap (23) and crankshaft journal (41). If clearance exceeds 0.010
in. (0.254 mm), replace piston assembly (31).
(20)
Remove two screws from crankshaft journal (41).
(21)
Measure plastigage. If clearance between bearing (24) and crankshaft journal (41) exceeds 0.0021 in. to
0.005 in. (0.053 to 0.127 mm), replace piston assembly (31).
(22)
Repeat Steps (15) through (21) to measure side clearance and bearing clearance on all remaining piston
and rod assemblies.
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