The problem with the 25 not moving was the inching valve lever sticking against the cover. It wasn't returning. We solved that problem. I need a knuckle for the mast tilt piston. It is cracked in half. We are using the 25 mast pistons in the 30. They come back too far. Just being careful until they can be swapped out. The 30 also has a leaking steering piston. A challenge indeed! It will be worth it in the end.

The tilt problem is a piston. Have them apart now with the new parts sitting next to them. Just need some time to get it done. The 25 will be a challenge. I will attempt to repack myself. Stubborn that way. Ordered master cyl and kit for the brake and inching valve. I will post the results. Thanks all. Cliff,

As far as the lift cyl- if it's a 2 stage upright then the hoist cyl will be a simple, 1 ram inside a shell ordeal- very easy to re-pack. If the upright is a 3 stage- the hoist cyl will be a telescoping quadruple step up which is best left to a hydraulic shop for repair.

As far as the inching spool- there is an adjustment built in to the actuator rod for the master cyl's- there are 2 master cyl's- 1 on the right (as seated on the machine) which activates the brakes only, and 1 on the left which activates the inching spool & brakes at the same time. Adjust these actuators so there is about 1/2" play in the brake pedal (measured at the pedal itself) before the piston in the master cyl begins to move. If this play is already present & the inching mechanism isn't working correctly further diagnostic work will be needed.

As swoop said- there's no adjustment for the spool of the hyd. control valve. If the tilts are drifting then it's either packing in tilt cyl's that's failing or a worn hyd control valve. As stated- hydraulically lock off 1 cyl at a time & see if drift continues.

on the lift cylinder part...
i think the more prudent question would be more presicely does the cylinder have telescoping pistons? One inside another and when you raise it is there one coming out of the bottom of the shell too?

Or...
is it just a single cylinder in the middle with a ram coming out of the top and 2 more smaller diameter cylinders on either side of the mast? (not the tilt cylinders) these would be long cylinders mounted on the right and left side of the mast channels.

judging from the model numbers its a gamble guessing which ones are on there but i'm banking on it being a telescoping cylinder. Those are a royal pain to reseal, if you have leaks at the top the other seals wont be far behind. Your best bet is to remove the cylinder assembly and take it to a cylinder repair shop if this is the case. I've done one and its no fun... let me tell you ;o)

as far as the clutch as you call it, the left pedal correct?
take a look behind the steering column under the dash and see if the brake master cylinder is tucked under there? also look for a 2nd cylinder mounted right beside it? Does it resemble anything like this? 'Then check the fluid in the resivoir and see if its low. The resivoir on these units was mounted under the dash area i believe.

If not mounted there then they would probably be mounted on the left and right side of the truck just under the inner floor plate area inside the fender area. I've seen them in both places...
being you have 2 different models like this you may have both scenarios between the 2 trucks. On the outer mounted resivoirs they would be part of the master cylinder assy.

on the spool valve? there is no adjustment except for a possible rod adjustment to center a lever travel, a rod with adjustable yokes on it. Other than that the spools themselves are not adjustable, only springs and a detent that keeps it in center.
if you have drifting tilt then there is a high possibility you have packing in a cylinder bad allowing it to bypass and drift forward. It could be either side since the hydraulic circuit is counterbalanced between the two. You will have to isolate each one and test it for bypassing to find the bad one.

Sounds like you got your hands full here... good luck and happy fixing! :o)

I was hoping you would reply. I think it is a three stage. Haven't found out yet. Automatics, both. Spool valve control for the tilt. Inching mech, yes, could be, what should I look for? i have brakes in the y30 now.

Boy- You've got yourself a handful! First- the hoist cyl leak- how many stages does the upright have- 2 or 3? Secondly- the clutch issue- do these units have manual or automatic trans? The "clutch" may be the inching mechanism malfunctioning. As far as the brakes- these units have the brake assy's inside the read diff assy, not right behind the wheels like most lifts- not over the top difficult, just more than most. What do you mean- "spool valve control"?