Semperfifishing - Marine Electronics & Transducer Sales

1995 115hp Mercury trim leak down

Old 06-08-2021, 03:11 PM
Junior Member
Thread Starter
Join Date: Jun 2021
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default 1995 115hp Mercury trim leak down

Hello all! New to forum. I have searched for threads, but not found an answer, TIA. The power trim & tilt (PTT) on a 1995 Merc 4 cyl. 115hp. PTT is a single ram with memory piston, round motor, yellow fill plug. The piston rod wiper and seal were old and leaking. I removed the assy. and correctly replaced all the seals and check valve balls in the piston with a kit (about $25) from FSM in FL. Refilled on the bench with ATF type F, fully closed manual release valve and bled system. It worked fine on the bench, but when reinstalled, would only trim up a couple of inches and stop, when under power it would settle all the way back down to bottom. No apparent leaks and reservoir is full at full extension of cylinder. My question is whether to keep replacing, hoping for a cheaper fix or to have a rebuild done for about $550 from FSM with a 2 year warranty? I see some of the parts such as a manifold repair kit are $330. Could it be a bad seal/broken tip on the manual release valve (original nylon one) and replace with a new SS one or bad poppet valve(kit is about $100)? Thank you for your help.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.