SERVICE MANUAL NUMBER 26
Thermostat
Removal
CLOSED COOLED MODELS
1.
2.
Drain coolant from cylinder block and exhaust manifold.
Disconnect hoses from thermostat cover attaching bolts and lock-washers, then remove
cover and gasket.
3.
Remove thermostat from thermostat housing.
a
b
c
73575
a - Bolts
b - Reservoir
c - Thermostat Housing
Testing
1.
2.
3.
Clean thermostat in soap and water to remove any deposits or debris.
Inspect thermostat for corrosion or other visible damage.
If thermostat is suspected of producing insufficient engine temperature, check
thermostat for leakage by holding it up to lighted background. Light leakage around the
thermostat valve indicates that thermostat is not closing completely and should be
replaced. (A small amount of leakage at one or two points around the valve perimeter
is acceptable.)
72717
a
Brass Thermostat (Stainless Steel Similar)
a - Check for Light Leakage Around Perimeter of Valve
Index
90-861329--1
MARCH 1999
Page 6B-9
| 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.
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