Mitsubishi diesel engines, Service Manual, Page: 205 / 219

MISCELLANEOUS
9 - 2
1. Disassembly and Reassembly of General Parts
1.1 Oil seals
When installing oil seals, pay particular attention
to the following points.
Installing oil seals into the housing
(a) Check the seal, including for damage to the lip.
When installing the seal, ensure that the lip
faces the correct direction.
(b) Before installing the seal, lightly coat the
seal’s outer periphery (which contacts the
housing) with grease.
(c) Use a seal installer like the one illustrated that
is designed to guide the seal lip as well as hold
the outer face of the seal. Using such a tool,
install the seal straight into the housing. Do
not try to tap the seal into place with a hammer
or other similar tool as the seal can be
damaged, resulting in oil leakage.
Installing oil seals onto the shaft
(a) Apply grease onto the seal lip.
(b) When installing a seal onto a stepped, splined
or threaded portion, or onto a surface with a
key groove, use a guide like the one illustrated.
1.2 O-rings
When installing an O-ring onto a stepped, splined
or threaded portion, or onto a surface with a key
groove, use a guide like the one illustrated.
Before installation, lightly coat the O-ring with
grease.
Oil seal installer
Oil seal guide
O-ring guide