Mariner Mercury 105/140 JET, Service Manual

Page: 735 / 797

90-824052R3 JUNE 2002 LOWER UNIT - 6E-43
Water Pump
REASSEMBLY/INSTALLATION
1. Install oil seals into water pump base, as follows:
a. Place water pump base on a press.
b. Just before installing each seal apply Loctite
271 on outside diameter of oil seal.
c. With a suitable mandrel, press the smaller
diameter oil seal into pump base with lip of oil
seal toward impeller side of base.
d. With a suitable mandrel, press the larger
diameter oil seal into pump base with lip of oil
seal toward gear housing side of base.
e. Wipe any excess Loctite from oil seals and
water pump base.
2. Install O-ring into O-ring groove of water pump
base. Lubricate O-ring and oil seals with 2-4-C
w/Teflon Marine Lubricant (92-90018A12).
a
b
c
51869
a - Mandrel
b - Oil Seal (Smaller OD)
c - O-Ring Groove
3. Install divider block if removed. Use RTV Sealer
to seal seams between divider block and gear
housing.
a
51878
a - Divider Block
4. Install a new water pump base gasket and install
water pump base.
c
a
b
51866
a - Water Pump Base
b - Gasket
c - Hole (MUST be positioned as shown)
5. Install the following in order: Pump base to face
plate gasket, face plate to pump cover gasket.
Gaskets and face plate are indexed by dowel pin
location and must be installed correctly.
b
c
a
51868
a - Gasket (Water Pump Base to Face Plate)
b - Face Plate
c - Gasket (Face Plate to Water Pump Cover)
6. Place impeller drive key on flat of driveshaft.
Hold key on driveshaft with a small amount of
Quicksilver 2-4-C w/Teflon Marine Lubricant
(92-90018A12).
IMPORTANT: When completing gear housing
repair that requires removal of water pump
impeller, it is recommended that the impeller be
replaced. If it is necessary to reuse the impeller,
DO NOT install in reverse to original rotation or
premature impeller failure will occur. Original
rotation is clockwise.