Isuzu 4JA1 Workshop Manual page 235

ENGINE ELECTRICAL 6D – 15
Oil seal
The oil seal must be replaced with a new one whenever
the alternator is disassembled.
Oil Seal Replacement
1. Push the old oil seal from the rear bracket outside
holes.
2. Use the insertion tool to press the new oil seal into
place. Follow the procedure shown in Figures A, B, C
and D.
・ Position the oil seal beneath the shaft and the
guide lip.
・ Position the cradle against the rear cover bosses
(3 points) so that the E1 and E2 surfaces fit into
the cradle. Take care not to damage the E1 and
E2 surfaces.
・ After completing the procedure, carefully check the
oil seal seating. Be absolutely sure that the seal is
evenly inserted (no warp) and level with the
surrounding surfaces.
Caution
・ ・ ・ ・ Be sure that no foreign material enters the space
between the oil seal and the rotor shaft surfaces
during the installation procedure.
・ ・ ・ ・ Take care not to damage the D surface.
・ ・ ・ ・ Under no circumstances may the original oil seal
be reused.
・ ・ ・ ・ The oil seal must be perfectly flat after being
pressed into place. If the oil seal is tilted, there will
be oil leakage.
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