5.0l
/ 305 cid / 5.7l / 350 cid ENGINES
SERVICE MANUAL NUMBER 24
5.
Slip outer surface of a new top and second compression ring into respective piston ring-
groove and roll ring entirely around the groove to make sure that ring is free as shown.
If binding occurs at any point, determine cause. If caused by ring groove, remove by
dressing with a fine cut file. If binding is caused by a distorted ring, recheck with another
ring.
72366
6.
7.
Proper clearance of piston ring in its groove is very important to provide proper ring
action and reduce wear. Therefore, when fitting new rings, clearances between ring and
groove surfaces should be measured. See “Specifications.”
Replace pistons that are damaged or show signs of excessive wear.
72367
PISTON PINS
1.
2.
Piston pin clearance is designed to maintain adequate clearance under all engine oper-
ating conditions. Because of this, piston and piston pin are a matched set and not serv-
iced separately.
Inspect piston pin bores and piston pins for wear. Piston pin bores and piston pins must
be free of varnish and scuffing when measured. Measure piston pin with a micrometer
and piston pin bore with a dial bore gauge or inside micrometer. If clearance is in excess
of the .001 in. (0.025 mm) wear limit, replace piston and piston pin assembly.
Index
Page 3A-68
90-861327--1 OCTOBER 1999
| 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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