Rocker Arm Cover
Intake Manifold
NOTICE
Removal
For repair procedures on Fuel Injection
Engines, refer to Section 5C.
On Engines with Center Exhaust Outlet Exhaust
Manifolds: It may be necessary to remove exhaust
manifold before removing rocker arm cover. Refer to
Section 7B for removal. Also remove any component
that will interfere with the removal of the manifold.
Removal
1.
2.
3.
Drain engine cooling system.
1.
2.
Disconnect crankcase ventilation hoses.
Disconnect hoses from thermostat housing.
Remove any items that interfere with the removal
of rocker arm covers.
Disconnect intake manifold-to-circulating pump
by-pass hose from circulating pump.
3.
Remove rocker arm cover.
4.
Disconnect electrical leads interfering with re-
moval.
Installation
5. Disconnect crankcase ventilation hoses from
rocker arm covers.
1.
Clean sealing surfaces on cylinder head and
rocker arm cover with degreaser.
6.
Disconnect throttle cable from carburetor. Re-
move fuel line and sight tube running between
fuel pump and carburetor.
2.
Place new rocker arm cover gasket in position in
rocker arm cover.
7.
Removedistributorcapandmarkpositionofrotor
on distributor housing. Also, mark position of dis-
tributor housing on intake manifold. Remove dis-
tributor.
a
IMPORTANT: Do not crank engine over after dis-
tributor has been removed.
8.
9.
Remove other ignition components.
Disconnect any other miscellaneous items that
will prevent removal of manifold.
IMPORTANT: It may be necessary to pry intake
manifold away from cylinder heads and block, in
next step. Use extreme care to prevent damage to
sealing surfaces.
72928
10.
Remove intake manifold bolts, then remove in-
take manifold and carburetor assembly.
a - Rocker Arm Cover Gasket
NOTE:If intake manifold requires replacement,
transfer all remaining parts to new manifold.
3.
Install rocker arm cover. Torque bolts to 70 lb. in.
(10
N·m).
4.
5.
Reinstall exhaust manifolds, if removed.
Cleaning and Inspection
Reinstall any items which were removed to allow
removal of rocker arm covers.
1.
Clean gasket material from all mating surfaces.
6.
7.
Connect crankcase ventilation hoses to rocker
arm covers.
IMPORTANT: When cleaning cylinder head mat-
ing surface, do not allow gasket material to enter
engine crankcase or intake ports.
Start engine and check for oil leaks.
Index
3A-22 - 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!
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