3.
Power Steering Models: Loosen power steer-
ing pump brace and pump mounting bolts, then
pivot pump inward and remove drive belts (some
models).
Drive Belt Tension
Adjustment
4.
5.
Loosen alternatorbraceattachingboltsandalter-
nator mounting bolt, then pivot alternator inward
and remove drive belt.
Belt Driven Combination Seawater/
Fuel Pump
Remove pump pulley attaching bolts, lockwash-
ers, clamping ring (if so equipped) and pulley.
IDLER PULLEY
1.
Belt should depress 1/4 in. (6 mm) at location
shown.
6.
7.
Disconnect hose(s) from pump.
Remove bolts, which secure pump to cylinder
block, and remove pump and old gaskets (dis-
card gaskets).
2.
To adjust belt tension, adjust idler pulley.
!
CAUTION
DO NOT over-adjust idler pulley. Too much ten-
sion on belt will cause bearings in seawater
pump to fail.
Cleaning and Inspection
1.
Clean gasket surfaces on water pump and cylin-
der block.
2.
Inspect water pump for blockage, cracks, sand
holes, corrosion or other damage. Inspect pump
impeller for cracks and erosion. Replace com-
plete pump if any damage exists.
3.
4.
Check impeller shaft and bearings for excessive
side play. If play can be felt, replace complete
pump.
a
Inspect pump pulley for bends, cracks, corrosion
or other physical damage. Inspect pulley for rota-
tional trueness. Replace pulley if damaged or un-
true.
Installation
b
72851
1.
Coat both sides of new circulating pump gasket
with Quicksilver Perfect Seal, then position gas-
kets and circulating pump on cylinder block. Coat
threads of circulating pump attaching bolts with
Quicksilver Perfect Seal and install bolts and al-
ternator brace (if applicable). Torque bolts to
specifications.
a - Power Steering Belt
b - Idler Pulley
3. If a new drive belt has been installed, recheck belt
tension after running for five minutes.
2.
3.
Reconnect hoses to pump.
Install pump pulley and clamping ring (if used) on
pump hub and secure with bolts and lockwash-
ers. Tighten bolts securely.
4.
5.
Install drive belts and adjust tension as outlined
in “Drive Belt Tension Adjustment.”
Start engine and check for leaks.
Index
6A-34 - SEAWATER COOLED SYSTEMS
90-823224--2 796
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you