Mack E7 Service Manual page 192

5-101.bk Page 34 Friday, March 17, 2006 11:05 AM
4. Determine the seal and wear ring installation
depth:
New seal on new crankshaft — Install to
initial production depth of
0.339–0.349 inch (8.611–8.865 mm).
New seal on service crankshaft — Install
to service depth of 0.245–0.255 inch
(6.223–6.477 mm).
Wear ring installation depth —
0.15–0.220 inch (5.461–5.588 mm).
Service oil seal installation depth
with new wear ring — 0.339–0.349 inch
(8.611–8.865 mm).
Service oil seal installation depth with
used wear ring — 0.245–0.255 inch
(6.223–6.477 mm).
Refer to Figure 6-39.
Figure 6-39 — Crankshaft Rear Oil Seal
1. Crankshaft rear oil seal
2. Production installation
depth
3. Service oil seal
installation depth
Page 6-34
200 ENGINE ASSEMBLY
4. Service oil seal installa-
tion depth with wear ring
5. Wear ring installation
depth
5. The two installation depths are stamped
above two of the guide pin bores of the
installation tool press plate. To install the
seal to the desired depth, position the press
plate so that the guide pins go through the
bore stamped with the desired depth.
6. Install the press plate driver hex hut and
continue tightening until a positive stop is
felt. At this point, the seal is installed to the
proper depth.
7. Remove the installation tool.