1972 trim/tilt Fail under movement

[Mac_55]

Hello everyone
i have looked at all the threads and bleeding the system was what i thought was the problem but the issue is...

3 piston set up
1 trim
1 tilt
3W motor

trim and tilt works great in my driveway problem is when i use it in the water under anything more then an idle it will not move up or down and when i accelerate the engine moves the tilt to dead bottom ????

Any ideas ? there are no external leaks

Thanks

 

[RRitt]

Re: 1972 trim/tilt Fail under movement

the check valves are worn out. You need your valve body repaired or replaced.

 

[Mac_55]

Re: 1972 trim/tilt Fail under movement

what do the check valves actully look like?
i have taken one apart before and there were

2 gears
2 springs-with nubs on the ends
2 steel balls

???
if anyone has a diagram of the actual break down that wold be helpful

 

[notsunkyet]

Re: 1972 trim/tilt Fail under movement

ok i have the same issue... got my pump working and i have tilt/trim... one large small ram that actuates until it is extended and the 1(2) on each side of the engine that lifts the motor up until it is almost 90' to the deck... but these bleed down fast! in fact all three do!
ihave taken one of these aprt before and there isnt alot of parts in them ... the hard thing is finding a parts list and diagram for them...
so if anyone can help please do....