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Author Topic:   Trim-Tilt Seal Replacement
whaler 13 posted 09-25-2008 08:28 PM ET (US)   Profile for whaler 13   Send Email to whaler 13  
[I] need to replace the seal that the shaft goes into around the top of the [Trim-Tilt] pump. [H]ow do [I] get the cap [assembly] off? [I]s the[re] a special tool that [I] need? [C]an [I] make [a special tool to remove the cap assembly]?
contender posted 09-25-2008 08:38 PM ET (US)     Profile for contender  Send Email to contender     
What engine? Which trim? The rams? Or the electric motor?
whaler 13 posted 09-25-2008 08:44 PM ET (US)     Profile for whaler 13  Send Email to whaler 13     
[The engine is a] 1998 [Evinrude] 35-HP. [O]n the hydraulic part. [W]here the shaft goes into it. [I] fill up [the reservoir of the hydraulic sytem] with fluid, and it leaks out the top.
jimh posted 09-25-2008 09:27 PM ET (US)     Profile for jimh  Send Email to jimh     
I believe you are trying to replace the seal on the actuator ram of the hydraulic Trim-Tilt system.

You can see a detailed exploded view of the system for an 1998 Evinrude 35-HP motor at

Click on the link to the Electronics Parts Catalog.

This may be helpful in gaining an understanding of how to disassemble it. You can also get the service manual for your motor, Generally these are available for ten years, so this might be a good time to buy the OEM manual while it is still available.

jimh posted 09-25-2008 09:29 PM ET (US)     Profile for jimh  Send Email to jimh     
An "O-RING & SEAL KIT" PN-0435567 is available for $61.68.
whaler 13 posted 09-25-2008 09:31 PM ET (US)     Profile for whaler 13  Send Email to whaler 13     
[H]ow do [I] get the top of the hydraulic pump cap off that the ram goes into? [I]s the[re] a tool? [I]t looks lik[e] it would be a tool with some sort of prongs to go into the holes. [I] already have the manual.
jimh posted 09-25-2008 09:49 PM ET (US)     Profile for jimh  Send Email to jimh     
The service manual provides explicit instructions and includes details of the tool. On my motor, a different model, for example, it says:

"Using OMC Universal Spanner Wrench, P/N 912084, and a breaker bar, unscrew the tilt cylinder end cap."

A photograph shows the details.

whaler 13 posted 09-26-2008 12:07 AM ET (US)     Profile for whaler 13  Send Email to whaler 13     
ok thanks. ill look into it

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