trim and tilt leak down-1989 Force 85 hp Model 856X9B

[outboardnut]

Force Model 856X9B
85 HP
1989

Having problem with neighbors trim and tilt.
The trim is ok
But the tilt has leak down(The engine does go up and down)(no leaks)
We replaced the O rings
https://www.ebay.com/itm/Rebuild-kit-Chrysler-Force-Power-Trim-and-Tilt-cylinder-seal-kit-/223084687339?oid=332385204119
Still has leak down
Can it be the pump?

[kerry]

Been quite a while, but I believe the manifold at the bottom of the pump, where the A-B-C lines are attatched, have O-rings inside. One might be failing.

If you have too many, AND not enough, you're a collector.

[billw]

It can definitely be the pump. There are spring loaded check and relief valves inside that are supposed to hold the hydraulic fluid in the ram static, when the pump isn’t running. They can leak by. I don’t remember on the Force pumps, which look a lot like a Prestolite product, whether they can be disassembled or not; but most pumps can be, if you have the time and patience. However, a lot of times, the check valves themselves are self-contained units that must be replaced as a whole item. Given the number or Force 85s and 125s that grenaded due to to piston ring sticking, it should be pretty easy to find another whole pump.

Long live American manufacturing!

[Author]

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