Mariner Mercury 105/140 JET, Service Manual

Page: 524 / 797

6A-28 - LOWER UNIT 90-824052R3 JUNE 2002
a. Drive water pump insert out of water pump
cover with a punch and hammer.
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b. Drill two 3/16
″
(4.8mm) diameter holes thru
the top of water pump cover (but not thru
insert). Drive insert out of cover with a punch
and hammer.
a
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a - Drill Two Holes at These Locations
7. Remove impeller from driveshaft. (It may be
necessary to use a punch and hammer to drive
impeller upward on driveshaft. In extreme cases,
it may be necessary to split hub of impeller with
a hammer and chisel.)
8. Once impeller is removed, remove impeller drive
key from driveshaft.
9. Remove water pump face plate and both gaskets
(one above and below face plate) from water
pump base.
10. Using 2 pry bars, positioned and padded as
shown, lift water pump base up and off drive
shaft.
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a
a - Pads
11. Remove (and discard) O-ring from O-ring groove
on water pump base.
12. Using a screwdriver, pry oil seals out of water
pump base from gear housing side of base.
Bearing Carrier and Propeller Shaft
Removal
CAUTION
Gear housing MUST BE in NEUTRAL position,
and shift shaft MUST BE removed from gear
housing before propeller shaft can be removed
from gear housing.
1. Place gear housing in a suitable holding fixture
with propeller shaft in a horizontal position.
2. Use Shift Shaft Bushing Tool (91-31107) to
unthread shift shaft bushing. (DO NOT remove
bushing from shift shaft at this time.)
a
51874
a - Shift Shaft Bushing Tool (91-31107)