SERVICE MANUAL NUMBER 28
OILDYNE TRIM PUMP
Air Bleeding Power Trim System
1.
The Power Trim System will purge itself of a small amount of air by raising and lowering
the sterndrive unit several times. However, if a rebuilt trim cylinder is being installed
(which has not been filled with oil), the bleeding procedure should be used to remove
the air from the system.
Bleeding OUT/UP Trim Circuit
1.
2.
Fill the pump reservoir to the proper level. The trim cylinder must be compressed.
Disconnect the OUT/UP hose from the front connection on the trim cylinder. If both cylin-
ders were rebuilt, disconnect the hoses from both cylinders.
3.
4.
Direct the end of the removed trim hoses into a container.
Run the trim pump in the OUT/UP direction until a solid, air-free stream of fluid is ex-
pelled from the hoses. Reconnect the hoses and tighten securely.
5.
Refill the trim pump to the proper level.
b
a
50389
a - OUT/UP Trim Hose
b - Front Connection On Trim Cylinder
Bleeding IN/DOWN Trim Circuit
1.
2.
Ensure that the pump reservoir is filled to the proper level.
Disconnect the IN/DOWN hose from the rear connection on the gimbal housing hydrau-
lic connector. If both cylinders were rebuilt, disconnect the hoses from both sides of the
hydraulic connector.
3.
4.
5.
6.
Plug the holes in the hydraulic connector using plug (22-38609) or suitable device.
Direct the end of the trim hose into a container.
Run the trim pump in the OUT/UP direction until the trim cylinders are fully extended.
Remove the plugs from the gimbal housing hydraulic connector and briefly run the trim
pump in the IN/DOWN direction until a solid, air-free stream of fluid is expelled from the
rear holes in the hydraulic connector. Reconnect the trim hoses and tighten securely.
INDEX
90-863160
MAY 2000
Page 5A-5
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | MerCruiser Sterndrives 90-863160 |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
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| Document File Type | |
| Copyright | Attribution Non-commercial |
(1 votes, average: 3 out of 3)
Marine readers have rated Mercury MerCruiser Bravo Outdrives Sterndrives Marine Engines Service Manual Number 28 3.0 out of 3.0 based on 1 product reviews. I could not find any mention of the seawater pump assembly.
Maybe I have the wrong unit