Detroit Diesel 4000 Series, Service Manual, Page: 1803 / 2706

SERIES 4000 12/16V SERVICE MANUAL
Inspection of Front Bearing Retainer
Perform the following inspections (listed in Table 170) for the front bearing retainer:
Part Description Wear Limit
Bore for front bearing (2), see Figure 1087 5.7079 in. (144.9807 mm) diameter maximum
Bore for front oil seal (1), see Figure 1087 5.1265 in. (130.213 mm) diameter maximum
General
3
Bearing bore must have straight sides, square
bottom, and not be oval due to wear.
3
Oil seal bore must not have nicks that extend
above the bore surface. All sealants must be
removed.
3
Pilot diameter for pulley must be free of nicks that
extend above the pilot surface.
3
Flat surface that mates with the pulley must be
free of nicks that extend above the surface.
3
Slots in the bearing retainer must not have worn
notches with straight sides. Maximum depth of
the wear mark should not exceed 0.020 in. (0.508
mm), but if the notches have smooth entry and
exit sides, the notch will not resist movement of
the steel plate.
Table 170 Inspection Criteria for Front Bearing Retainer
Inspection of Sleeve Bearing
Perform the following inspections (listed in Table 171) for sleeve bearings:
Part Description Wear Limit
Sleeve bearing (5), see Figure 1084 Replace if necessary
Sleeve bearing (6), see Figure 1084 See Figure 1088 to determine amount of wear
Table 171 Inspection Criteria for Sleeve Bearing
Inspection of Retainer Seal Assembly
Perform the following inspection (listed in Table 172) for the retainer seal assembly:
Part Description Wear Limit
Rear retainer seal assembly (11), see Figure 1085 Replace if damaged, worn, or distorted
Front retainer seal assembly (3), see Figure 1084 Replace if damaged, worn, or distorted
Table 172 Inspection Criteria for Retainer Seal Assembly
All information subject to change without notice.
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