Installation
3. Using valve spring compressor as shown, com-
press valve spring and remove valve locks.
IMPORTANT: It is recommended that the engine
oil be changed and a new oil filter be installed
whenever servicing valve lifters or camshaft.
a
b
IMPORTANT: Before installing lifters, coat the
bottom of the lifter with engine oil. If new lifters
or a new camshaft have been installed, an addi-
tive containing EP lube (such as General Motors
Cam and Lifter Pre-lube or equivalent) should be
poured over camshaft lobes before installing lift-
ers.
IMPORTANT: Before installation, coat entire
valve lifter with engine oil.
72516
IMPORTANT: DO NOT install used valve lifters if
a new camshaft has been installed.
a - Valve Spring Compressor (J-5892)
b - Rocker Arm Nut
1.
2.
3.
Install hydraulic valve lifters and components.
Install intake manifold.
4.
Slowly release valve spring compressor. Re-
move cap, shield, and valve spring.
Install push rods and rocker arms. Torque rocker
arm bolts to specification.
IMPORTANT: Keep air pressure in cylinder while
springs, caps, and valve locks are removed or
valves will fall into cylinder.
4.
5.
Install rocker arm cover.
Start engine and check for leaks.
5.
Remove oil shields from valve stems.
Valve Stem Oil Seal/Valve
Spring
Removal - Head Installed
1.
Remove:
a. Rocker arm cover.
b. Spark plug of affected cylinder.
c. Rocker arm assembly.
a
2.
Install air line adaptor tool (J-23590) in spark plug
hole and apply compressed air to hold valves in
place.
NOTE:If compressed air is not available, piston may
be brought up to TDC and used to keep valves from
falling out of valve guides.
72149
a - Valve Stem Oil Shield
IMPORTANT: Do not turn crankshaft while valve
springs, retainers, and locks are removed or
valves will fall into cylinder.
Index
3A-26 - 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.
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