Installing Jet Drive To Drive Shaft Housing - Mercury 40 Service Manual

Installing Jet Drive to Drive Shaft
Housing
1. Apply a light coat of 2-4-C w/Teflon to the drive
shaft splines. DO NOT APPLY GREASE TO THE
TOP OF THE DRIVE SHAFT AS THE GREASE
WILL PREVENT THE DRIVE SHAFT FROM
FULLY ENGAGING THE CRANKSHAFT AND
DAMAGE TO THE POWERHEAD AND/OR
GEAR CASE WILL RESULT.
2. Carefully slide jet drive into drive shaft housing
while aligning drive shaft splines with crankshaft
and the water tube with the water pump cover
seal.
3. Secure jet drive to drive shaft housing with 4
bolts. Torque bolts to 25 lb. ft. (34.0 N·m)].
a
a - Bolts [Torque to 25 lb. ft. (33.9 N·m)]
4. Secure aft end of jet drive to drive shaft housing
with bolt and washer. Torque bolt to 22.5 lb. ft. (30
.5 N·m).
a
a - Bolt and Washer [Torque to 22.5 N·m)]
6D-22 - LOWER UNIT
5. Grease the drive shaft, shear key, and impeller
a
a - Plastic Sleeve
b - Impeller
c - Shear Key
d - Shims
e - Nut Retainer
f - Impeller Nut
6. Temporarily reinstall the water intake housing in
54165
bore. Place the plastic sleeve inside the impeller
and install impeller, shear key, shims nut retainer,
and impeller nut. Turn the nut tight on the shaft to
remove any play between the impeller and shaft.
If the tabs on the retainer do not line up with the
flats on the nut, remove the nut and turn the re-
tainer over and re-tighten the nut again.
order to check for impeller clearance. The clear-
ance between the impeller and liner should be
0.030 in. (0.8 mm). Shim washers can be trans-
ferred to either side of the impeller to raise or low-
er the impeller to the correct clearance setting.
The water intake housing can be shifted side
ways a small amount in order to center the liner.
.03 in. (.8mm)
90-852572R1 JANUARY 1998
a
b
c
d
e
f