SERVICE MANUAL NUMBER 26
181 CID (3.0L) 4 CYLINDER GM ENGINE
PISTON PINS
1.
2.
Piston pin clearance is designed to maintain adequate clearance under all engine
operating conditions. Because of this, piston and piston pin are a matched set and not
serviced 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. (0.02 mm) wear limit, replace piston and piston pin assembly.
Reassembly
PISTONS AND PISTON PINS
IMPORTANT: When reassembling pistons and connecting rods, the following must
be kept in mind.
•
Piston and pin are machine fitted to each other and must remain together as a
matched set. Do not intermix pistons and pins.
•
If original pistons and/or connecting rods are being used, be sure to assemble
pistons and connecting rods so they can be reinstalled in same cylinder from
which they were removed.
•
Connecting rod bearing tangs are always toward outside of cylinder block.
a
72368
a - Rod Bearing Tangs
•
Notch on piston must be positioned toward the front of the engine.
a
72896
a - Notch
Index
90-861329--1
MARCH 1999
Page 3A-51
| 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