TRUCK SERVICE MANUAL
ENGINE
New
New
Worn
Part or Location
Minimum
Maximum
Limit
Piston Pin Bushing
2.001
2.0015
2.0025
[50.83]
[50.8381
[50.863]
Connecting Rod Length
Center to Center
11.998
12.000
[304.75]
[304.80]
Connecting Rod Alignment
Without Bushing
0.008
(0.20)
With Bushing
0.004
[0.10]
Twist
Without Bushing
0.020
[0.51]
With Bushing
0.010
[0.25]
Connecting Rod Bolt (855 C.I.D Series)
Minimum O.D
0.541
0.545
0.540
[13.74]
[ 13.84]
[ 13.72]
Pilot O.D
0.6245
0.625
[15.852]
[15.87]
Bolt Hole Inside Diameter Pilot
855 Series Rod
0.6243
0.6248
0.6249
[15.857]
[15.870]
[15.872]
Cap
0.6246
0.6251
0.6252
[15.865]
[ 15.877]
[15.880]
Piston and Piston Rings
Ring Gap
Refer to Table 1-1 (14).
Piston Skirt Diameter at 70 deg F [21 deg C]
Refer to Table 1-1 (12).
Piston Pin Bore
Aluminum
1.9985
1.9989
1.999
[50.762]
[50.772]
[50.77]
Piston Pin Diameter
1.9988
1.999
1.9978
[60.7691
[50.77]
[50.754]
425