add oil into trim hydraulic pump

HPLou

Petty Officer 2nd Class
Joined
Sep 15, 2007
Messages
196
Mercruiser 260 5.7L s/n 6846787
Stern Drive Alpha One s/n 6847830

I checked the Dip Stick on my Trim Hydraulic Pump and I need to add oil (10W30). Does the Stern Drive needs to be full down or full up when adding oil?
Than You
 

airdvr1227

Lieutenant Commander
Joined
Jul 15, 2009
Messages
1,666
Re: add oil into trim hydraulic pump

I believe that it has to be in the full up position or there will be pressure in the pump.
 

ziggy

Admiral
Joined
Jun 30, 2004
Messages
7,473
Re: add oil into trim hydraulic pump

you'll add to much if ya fill with the rams extended. all the fluid is in the rams.

don't know what year ya got. but from s/m #6 it talks about how to fill the system. then it goes on tell about bleeding. the first thing is says there is "fill pump reservoir to proper level as explained preceding. (trim cylinder must be compressed)".

i certainly fill my old drive with the rams compressed. that way i know how much fluid is in the reservoir. when extending the rams, the fluid comes from the reservoir and fills the rams, leaving the reservoir with less or little fluid in it. if you fill with the rams extended. you'll way over fill it.
 
Top