TM 5-2815-241-34&P
PISTON AND CONNECTING ROD - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
CLEANING/INSPECTION - CONTINUED
10.
Connecting rod (1),
bearing cap (2),
and two bolts (3)
Using magnetic inspection procedure,
inspect for cracks.
Pay particular attention to cracks in
critical areas (4).
If cracks exist, discard connecting
rod.
11. Connecting rod (1)
Bearing cap (2),
two nuts (5), and
two new washers (6)
a.
Put bearing cap on connecting rod and
install nuts and new washers.
b. Using 1/2-inch drive 15/16-inch
socket and 0 to 150 ft lb (0 to 210 N•m)
torque wrench, tighten nuts as shown in
table below.
CONNECTING ROD NUTTIGHTENING SEQUENCE
TORQUE VALVE
TIGHTENING SEQUENCE
FT LB
(N•m)
Step 1. Tighten to
70 - 75
(95 - 102)
Step 2. Advance to
140 - 150
(190 - 203)
Step 3. Loosen to
0
(0)
Step 4. Tighten to
25 - 30
(34 - 41)
Step 5. Advance to
70 - 75
(95 - 102)
Step 6. Advance to
140 - 150
(190 - 203)
12.
Crankpin bore (7)
a.
Using dial bore gage (8), measure
inside diameter at points A - A and B -
B
up to 30° either side of parting line C,
and record readings.
If crankpin bore diameter Is not
between 3.2722 to 3.2736 inch
(83.114 to 83.149 mm), tag connec-
ting rod for crankpin bore resizing.
2-224
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