Detroit Diesel 4000 Series, Service Manual, Page: 2594 / 2706

SERIES 4000 12/16V SERVICE MANUAL
Piston Rings
See Figure 1091 for a view of the piston rings tolerance points and listed in Table 25 are the
tolerances for the piston rings.
Figure 1091 Piston Rings
Deviation Clearance
No. Designation Tol. Size
Lower Upper Min Max
Groove width 4.000 + 0.170 + 0.190
1
Rectangular-section ring 4.000
−
0.350 0
0.170 0.540
Groove width 4.000 + 0.080 + 0.100
2
Taper face compression ring 4.000
−
0.350 0
0.080 0.450
Groove width 5.000 + 0.080 + 0.100
3
Oil control ring 5.000
−
0.350 0
0.080 0.450
4
Ring end clearance
rectangular-section ring
taper face compression ring
oil control ring
- - -
0.400
1.000
0.450 0.700
1.300
0.800
NOTE:
Re 4: Measure ring end clearance in ring gage 165.0
H4
Table 25 Piston Ring Tolerances
All information subject to change without notice.
D -48
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