Mercury 80 trim/tilt unit O-rings?

[fishdog4449]

I have a Mercury 800 '82 trim unit that is leaking oil from the bottom of the unit, underneath the reservoir where the hydraulic lines connect. It drips when the motor is down, but when I try to tilt the motor up, it actually SPRAYS out. I am fairly sure the problem is a bad o-ring or gasket. The thing is, do i HAVE to buy the o-rings off the Merc website or will any appropriatley sized o-rings from NAPA or Advance work?
It looks to be an easy repair, and I want to go out this weekend if possible so I don't want to drive 50 miles to the nearest Merc dealer for 1.99 o-rings.

Oil leaking from here.

 

[Laddies]

Re: Mercury 80 trim/tilt unit O-rings?

We purchace them through a local hyd. repair shop or mercury

 

[fishdog4449]

Re: Mercury 80 trim/tilt unit O-rings?

So ordinary ones from Napa couldn't withstand the pressure or something?

 

[Laddies]

Re: Mercury 80 trim/tilt unit O-rings?

If NAPA listed it for hydraulic use at 3000 lbs. no problem if your store will ck their marine catalog they probably can get OEM replacement

 

[fishdog4449]

Re: Mercury 80 trim/tilt unit O-rings?

I might just order them fedex overnight via Merc parts express, easier than going through napa probably
thanks for all the help!!

 

[fishdog4449]

Re: Mercury 80 trim/tilt unit O-rings?

If NAPA listed it for hydraulic use at 3000 lbs. no problem if your store will ck their marine catalog they probably can get OEM replacement

ordered the new parts from MercExpress
rebuilt it this weekend, works fine!