Yamaha Outboard Parts
Yamaha   Yamaha Outboard Parts
Yamaha Outboard Forum Yamaha Outboard Parts Discussion Forum Yamaha Outboard Parts Boat Parts Yamaha Outboard Forum Outboard Motor Parts Contact Us
Yamaha Parts
  #1 (permalink)  
Old 09-07-2008
Posts: n/a
Question Yamaha150 Tilt/Trim Hydraulic leak

One of my two 2005 yamaha 150 four stroke Power Trim/Tilt system is having a hydraulic fluid leak. The motor at one point was stuck in the up position which I was able to remedy by putting in more fluid. It lasted about a week and then recurred again requiring a fair amount of fluid to get it to work. Now I can see a small oil slick around the engine as it continues to leak (again won't work). I can't see/feel a leak around the reservoir cap or see or feel leaks around the pistons. Any ideas on where these can typically leak from. One of my problems is that my boat is a catamaran and I don't have a trailer and where I live there are no trailers I can easily borrow to pull the boat. I am hoping to trouble shoot as much as I can with the boat in the water before having it pulled. Any help is appreciated.
Kevin P
Reply With Quote
  #2 (permalink)  
Old 09-08-2008
Posts: n/a

you should be able to R and R the trim Assembly, with the engine tilted up, while the boat is in the water...

it removes fairly easily.... you however will have to get wet, and must be very careful not to drop any bolts, or washers in the drink!
Reply With Quote
  #3 (permalink)  
Old 09-10-2008
Senior Member
Join Date: Dec 2009
Location: st pete florida
Posts: 160

usualy they leak from the two short rams caps, the top seals are leaking,you have to remove the caps with a spanner wrench and replace the 3 seals and also check for worn cap hole where the ram is going thru. if the hole is oval they will leak again soon
good luck
Reply With Quote
  #4 (permalink)  
Old 07-04-2009
Posts: n/a
Default Removing Ram cap

I successfully removed the trim ram rod but cannot figure out how to remove the trim cap from the rod to replace the seals. Any advice? Thanks in advance.

Austin, TX
Reply With Quote

Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 08:34 AM.

Outboard Parts

Other Forums
Mercury Parts
Suzuki Parts
Evinrude Parts
Johnson Parts
Honda Parts

Copyright 2000 - 2017, Outdoor Network LLC