Pump question

FlyRans

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Joined
Apr 5, 2024
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2
I'm working on a motor that is similar to a Mercruiser trim pump (J1171 Marine). My pump works but is leaking out of one of the large (21mm wrench) hex nuts at the base. My question is, what seals these? Gasket or o'ring? See pics for detail. I don't want to remove them until I know what I'm getting into. Thanks for any help.pump2.jpgIMG_2698s.jpg
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
15,887
I'm working on a motor that is similar to a Mercruiser trim pump (J1171 Marine). My pump works but is leaking out of one of the large (21mm wrench) hex nuts at the base. My question is, what seals these? Gasket or o'ring? See pics for detail. I don't want to remove them until I know what I'm getting into. Thanks for any help.View attachment 396424View attachment 396423
Could be either.
My guess is an oring, but will not know until you open it up
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
48,761
Look up the oildyne 108 manual (on the parker hydraulic we site)
 
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