sadly, no, but thank you for your interest. bleeding the pump by cracking the lines near the floorboards had no effect. but i ran out of time, and have had no time since to mess with it. i use the forklift to remodel the bathroom every few years, since it's too heavy to pick up and set down over a new hole any other way, but things are not critical yet.

i managed to obtain online manuals for this 1973 model but, again, have had no time. i'll scrutinize the troubleshooting sections of the literature, and return here as soon as i can.

I guess another satisfied customer!!

shoot

well i hope it isn't terminal.

i'll try bleeding th epump this weekend, and see what will happen

thank you and stay tuned

After sitting for 3 years the hydraulic pump may have bled out, so upon restart it ran dry for a period. That may be all it took to fatally wound the pump.

Try bleeding the pump.
Fire it up and slowly loosen the pressure hose on the pump until oil comes out then tighten back up.
Might be all it needs, had a toyota pump do that to me before when it sat for a long time.
Good luck.

the tags are still there. apparently i cannot post pictures. maybe i can link to an image host. these are the plates:

model 42-GF315
serial 40-3FG15-60430
3000 pound capacity
130-inch lifting height

ASCO automatic transmission
model 32100-1052071
serial 4H1673

oil control valve
custom 67600-14901-71
model no. (blank)
serial no. 740044

here's the url of an imgur album with pictures. to make the url post, i've put in a three-space blank after the https and after each set of forward slashes. just take out the spaces and the url should navigate to the album

https :// imgur.com/ a/ XZtH7

this forklift was flooded over the floorboards during hurricane ivan. the water did not quite rise high enough to enter the hydraulic fill cap, and the rubber plugs on the dipsticks kept the water out of the transmission and crankcase. i drained the fuel tank, changed the starter, and it worked fine for several years.

You will need to post a complete model and serial number. The 5R is the engine that is in it. If the data tag is gone, depending on the model it was either on the dash or front cowl. If it is gone the serial number is stamped in the frame usually on the right hand side where the engine hood meets the frame. That year of truck you most likely will have to grind a few layers of paint off to find it.

hey folks

thank you for the quick reply.

no, swoop, no seat switch-- this machine is about a 1973, with a 1970's safety attitude. good shape except for this, though, only about 2700 hours.

it starts up, drives forward and reverse just fine-- no hesitation or jumpiness in the transmission from forward through neutral to reverse. trans fluid is clean and up to the mark.

it's only the mast hydraulics that are dead. i can't find any manuals for the hydraulics on this unit, so i'm down to looking at the plumbing and trying to figure out how it works.

duo, what is a hydraulic pump coupling and where would i find it?

I would doubt if there is a seat switch in an IC truck that is old enough to use a point type distributor. I would guess that the hydraulic pump coupling is no good.

will it move? drive?
check and see if it has a seat switch

alot of lifts do have a seat switch in the seat cushion and if that goes bad the lift will not work. It will crank, engine will run but all drive and lift functions will not work.

to know if it has one just look under the seat and see if there is a small wire harness coming from underneath it and running through a hole in the hood leading to the main harness.