3.
4.
Carefully lower crankshaft into place. Be careful
not to damage bearing surface.
Timing Chain and Sprocket
Check clearance of each main bearing, following
procedure outlined under “Main Bearings.” If
bearing clearances are satisfactory, apply engine
oil to journals and bearings.
Removal
1.
Remove torsional damper, oil pan and crankcase
front cover as outlined.
5.
Install main bearing caps. Torque bolts to 110 lb.
ft. (149 N·m). When tightening rear main bearing
cap, follow procedure outlined under “Main Bear-
ings.”
2.
Turn crankshaft until timing marks on crankshaft
and camshaft sprockets are in alignment as
shown.
6.
7.
Check crankshaft end play as outlined.
Check clearance for each connecting rod bear-
ing, following procedure under “Connecting Rod
Bearings.” If bearing clearances are satisfactory,
apply engine oil to journals and bearings.
8.
Install rod caps and evenly torque nuts. Refer to
“Specifications”.
b
a
9.
Turn crankshaft so mark on timing sprocket or
gear is facing camshaft.
10.
Install as outlined:
a. Timing chain and sprocket or gear on cam-
shaft -align marks with crankshaft.
b. Timing chain/gear cover.
c. Oil pump and baffle.
d. Dipstick tube and oil pan.
e. Spark plugs.
72946
f.
Torsional damper and crankshaft pulley.
a - Timing Marks Aligned
b - Locating Pin
g. Water pump.
h. Belts.
3.
Remove camshaft sprocket and timing chain. (If
sprocket does not come off easily, a light tap on
the lower edge of the sprocket, using a plastic
mallet, should dislodge it.)
i.
j.
Flywheel and drive coupler/plate.
Flywheel housing.
k. Starter.
4.
If crankshaft sprocket requires replacement, re-
move as outlined.
11.
Install new oil filter. Fill crankcase with oil.
Index
90-823224--2
796
454 CID (7.4L) / 502 CID (8.2L) - 3A-55
| 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