Detroit Diesel 4000 Series, Service Manual, Page: 2614 / 2706

SERIES 4000 12/16V SERVICE MANUAL
Inlet and Exhaust Rocker Arm Bearing
See Figure 1105 for the inlet and exhaust rocker arm bearing. Listed in Table 39 are the tolerances
for the inlet and exhaust rocker arm bearing.
Figure 1105 Inlet and Exhaust Rocker Arm Bearing
Deviation Clearance Interference
No. Designation
Tol. Size
Lower Upper Min Max Min Max
Rocker arm bore 50.00
H7
0
+ 0.025
1
Bushing OD 50.00
s6
+ 0.043 + 0.059
- - 0.018 0.059
Bushing bore 45.00
E6
+ 0.050 + 0.066
2
Rocker shaft
OD
45.00
f6
−
0.041
−
0.025
0.075 0.107 - -
Bearing pedestal
bore
45.00
U7
−
0.086
−
0.061
3
Rocker shaft
OD
45.00
f6
−
0.041
−
0.025
- - 0.020 0.061
Table 39 Inlet and Exhaust Rocker Arm Bearing Tolerances
All information subject to change without notice.
D -68
Copyright © DETROIT DIESEL CORPORATION