raymond dockstocker intermittant lift problem - Design & Engineering discussion in Forkliftaction's forums

Discussion:
raymond dockstocker intermittant lift problem

dss300 tt
s300-01691-97

when you lift the pump sounds like its running in bypass it will lift the first stage very slow and wont have enough power to lift the second stage
also at the same time tilt is completely inoperative even though the pump runs with tilt request
(sounds like its in bypass again)
then it will work fine then the prob comes back
cust claims resetting the key fixes it but that does not seem to be the case (very random)
my shop guy took out the valve body and cleaned it out also put a new filter in with no change in problem

i tried swapping relief 1 (lift) and 2(aux) since they carried the same part # but there was no change
no codes so i think its a stuck valve but not sure which 1 since if lift select was stuck then it would lift when i request tilt and if the tilt valveswhere stuck then i probablay wouldnt have a problem with lift
any heads up would be great
thanks

Posted 29 Oct 2006 01:44
Discussion started by justinm
New York, United States

Post a Reply Report this post

Showing items 1 - 5 of 5 results.

Sort messages by:

If your lift is pre-93 make sure that the firmware is correct for the pump otherwise it will not turn at proper RPM and could lead to premature pump failure.

Posted 19 Sep 2007 02:22
Reply by Sfellows
Georgia, United States

Post a Reply Report this post

update
forgot to post it a few weeks ago
it was a bad pump

Posted 6 Apr 2007 22:06
Reply by justinm
New York, United States

New York, New York its a heluva town..you know that The Bronx is up..and I'm Brooklyn down

Post a Reply Report this post

If the lift runs after its been sitting a while than works ,it is sounds like your lift pump is going bad (this is a comman syptom of a pump going out

Posted 20 Feb 2007 12:16
Reply by ray_c
Minnesota, United States

Post a Reply Report this post

Check the variable flow valve, could be sticking, the driver could also be bad (might explain the reset with keyswitch).

Posted 30 Oct 2006 03:42
Modified 30 Oct 2006 03:45 by poster
Reply by mike_n
Alberta, Canada

Post a Reply Report this post

I would check pressures first. Verify your pressures when system is acting up and when it is running ok. If system is running in bypass you will feel spot where restriction is heat up. I am not sure where test ports are but using them may help, good luck.

Posted 29 Oct 2006 05:25
Reply by tom_k
Ohio, United States

Post a Reply Report this post

Post your Reply

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

Having trouble using the Discussion Forums? Contact us for help.