181
CID (3.0L) 4 CYLINDER GM ENGINE
SERVICE MANUAL NUMBER 26
1.
Assemble piston to connecting rod using piston pin remover as shown. Follow instruc-
tions supplied with tool.
a
72371
a - Piston Pin Remover (J-24086-B)
2.
3.
Once assembled, check piston for freedom of movement (back and forth and up and
down) on connecting rod. Piston should move freely in all directions. If it does not, piston
pin bore is tight and piston/pin assembly must be replaced.
If a new connecting rod has been installed, mark connecting rod and cap (on side of rod
and cap with slots for connecting rod bearing tangs) with cylinder number in which it will
be installed.
PISTON RINGS
All compression rings are marked on upper side of ring. When installing compression rings,
make sure that marked side is toward top of piston. The top ring is treated with molybdenum
for maximum life. Oil control rings are a three piece type, consisting of 2 segments (rails)
and a spacer.
Oil control rings are a three-piece type, consisting of two rings and a spacer.
1.
2.
Select rings comparable in size to cylinder bore and piston size.
Slip compression ring in cylinder bore, then press ring down into cylinder bore about 1/4
in. (6 mm) (below ring travel). Be sure that ring is square with cylinder wall.
3.
Measure gap between ends of ring with a feeler gauge as shown.
72372
4.
5.
If gap between ends of ring is below specifications, remove ring and try another for fit.
Fit each compression ring to cylinder in which it is going to be used.
Index
Page 3A-52
90-861329--1 MARCH 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 181 CID |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(6 votes, average: 5 out of 5)
Marine readers have rated Mercury MerCruiser GM 4 Cylinder 181 cid 3.0L Marine Engines Service Manual Number 26 5.0 out of 5.0 based on 6 product reviews. Thanks for sharing this material. Helps a lot after suffering with bad mechanics. spend too much money and nothing very good
great manual, makes impossible jobs possible. without a manual you can not do the job, a must have.
Great resource. Excellent information provided.
Need help to install automate choke
Need help to instal automate choke