SERVICE MANUAL NUMBER 24
5.0l / 305 cid / 5.7l / 350 cid ENGINES
Valve Stem Oil Seal / Valve Spring
Removal - Head Installed
1.
2.
3.
4.
Remove rocker arm cover.
Remove spark plug of affected cylinder.
Remove rocker arm assembly.
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.
IMPORTANT: Do not turn crankshaft while valve springs, retainers, and locks are
removed or valves will fall into cylinder.
5.
Using valve spring compressor as shown, compress valve spring and remove valve
locks.
c
b
a
72306
a - Valve Spring Compressor (J5892)
b - Rocker Arm Nut
c - Valve Locks
6.
7.
Slowly release valve spring compressor.
Remove cap, shield, and valve spring.
IMPORTANT: Keep air pressure in cylinder while springs, caps, and valve locks are
removed or valves will fall into cylinder.
8.
Remove seals from valve stems and valve guide.
a
72330
a - Valve Guide Seal
Index
90-861327--1
OCTOBER 1999
Page 3A-29
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 305 CID, Mercury MerCruiser 350 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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Marine readers have rated Mercury MerCruiser Engines Service Manual Number 24 GM V-8 305 CID 350 CID 4.0 out of 4.0 based on 1 product reviews. Great performance engine.
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