Hitachi H 90SE Technical Data And Service Manual page 21

Reassembly of the Oil Seal [82]
When mounting the Oil Seal [82] in the Bearing Boss [80], carefully ensure that they are mounted in the
proper direction as described below.
(1) Mounting of the Oil Seal [82]
As illustrated in Fig. 18, the lip side of the Oil Seal [82] must be facing in the same direction in which the
Crank Shaft [84] is assembled.
Reassembly of the Retainer [1] section
Before reassembly, apply grease (Doubrex #251 Part No. 980757) to the sliding portion between the Retainer
[1] and the Retainer Damper [6] of the Front Cover [7], Damper (B) [5] and Lever Pin [3]. Mount the Damper
(B) [5] and the two Retainer Dampers [6] to the Front Cover [7] and then mount the Retainer [1]. Insert the
Lever Pin [3] into the 17.5 mm dia. hole of the Retainer [1] facing the recessed portion of the Lever Pin [3] to
the hexagonal hole of the Front Cover [7]. At this time, align the 6.5 mm dia. hole of the Retainer [1] with the
7 mm dia. hole of the Lever Pin [3]. Drive the Roll Pin D6 x 55 [2] into the 6.5 mm dia. hole of the Retainer [1]
approximately 5 mm under the end surface of the Retainer [1] (Fig. 19).
Damper (B) [5] (2 pcs.)
6.5 mm dia. hole
7 mm dia. hole
Lever Pin [3]
Roll Pin D6 x 55 [2]
Retainer Damper [6]
Recessed portion
--- 19 ---
Lip
Fig. 18
Retainer [1]
(2 pcs.)
(2 pcs.)
Fig. 19
Crank Shaft [84]
Oil Seal [82]
Bearing Boss [80]
Front Cover [7]
17.5 mm dia. hole