Installation - Head Installed
454 MAGNUM / 502 MAGNUM / 8.2L
1.
2.
Place shim on valve spring seat.
7.4L
If taken apart, reassemble damper and valve
spring as shown. Make sure tighter wound coils
of spring and damper are on the same end.
1.
2.
Place rotator or shim on valve spring seat.
Coat valve stem and new seal with engine oil. In-
stall seal over valve stem.
3.
4.
5.
If taken apart, reassemble damper and valve
spring. Place on top of rotator or shim.
Set valve spring assembly and cap in position
over valve stem.
Compress spring, using valve spring compres-
sor, and install valve locks (grease may be used
to hold valve locks in place). Slowly release tool,
making sure valve locks seat properly in valve
stem grooves.
72149
3.
Place valve spring assembly in position with
tighter wound coils against spring seat.
a
IMPORTANT: Valve seal and cap must be as-
sembled as shown before installation.
b
72149
72516
a - Valve Spring Compressor (J-5892)
b - Rocker Arm Nut
4. Coat valve stem and new seal with engine oil.
5.
Set cap and seal assembly on valve stem. Align
valve stem with center of valve seal.
6.
7.
Install push rods and rocker arm assemblies.
Torque to specifications.
6.
Compress valve spring, using valve spring com-
pressor, and install valve locks (grease may be
used to hold valve locks in place). Slowly release
tool to prevent damaging seal. Make sure valve
locks seat properly in valve stem grooves.
Install rocker arm cover [torque to 90 in. ft. (10
N·m)] and spark plug [torque to 22 lb. ft. (30
N·m)].
7.
8.
Install push rods and rocker arm assemblies.
Torque to specifications.
Install rocker arm cover [torque to 90 in. ft.
(10
(30
N·m)] and spark plug [torque to 22 lb. ft.
N·m)].
Index
3A-28 - 454 C.I.D. (7.4L) / 502 C.I.D. (8.2L)
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!
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This book is invaluable if you do your own repairs. Great book.
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