caterpillar v250b forklift

HI ALL

i have this fork lift at my work and it gets the forks stuck up in the air sometimes
you can jerk the lifting leaver up and down and it will come back down
what do you guys think the problem is a valve bad ?

model V250B

serial number 72Y01373

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Hi Charles,
I would check the mast guide rollers for seizure and/or flats worn on their outer rolling surfaces and excessive wear.
We had a similar unit at the Dealer and I am sure it had guide rollers.

From observation over the years I saw/experienced that the mast frames can catch at the top of the stroke due to crud build up in the guide roller or wear strip--if equipped--runs or if a lot of wear to the guide rollers or missing or worn wear strips the inner frame cocks forwards in the outer frame and jams.


Luckily I did not get to do much on Lift Trucks, especially after working on Hyster's and Towmotor's etc. way back in the '60's as an Apprentice, so I stand to be corrected.
Cheers,
Eddie B.

Ed B is correct. We bought our CAT RC60 lifts used; dealer did a gorgeous job of refurbishment, the rollers would bind up at the top because of the new paint binding the mast/rollers/wear shims. I’d check to see that the carriage/chains are even and not cockeyed as well.