Discussion:
Pump motor keeps running

pump motor will not shut off, raise and lower switch are good. Only one pump motor on this unit.
  • Posted 4 Apr 2007 00:20
  • By albert_h
  • joined 22 Aug'06 - 59 messages
  • California, United States
Showing items 1 - 9 of 9 results.
Can you also send me a copy of the schematics as I am having an issue with the lift as well. I can not get the lift pump contactor to engage unless i manually push it shut. I am getting battery voltage at the contactor when activating the switch. Any ideas?
  • Posted 11 Oct 2022 07:15
  • By Ricky_Gilmore
  • joined 12 Feb'22 - 8 messages
  • Florida, United States
rgilmore
check your lift switches. the steer pump supplies the reach and tilt
  • Posted 16 Feb 2008 15:05
  • By whoknows
  • joined 8 Feb'08 - 10 messages
  • Ohio, United States
Did someone remove your e-mail address?
  • Posted 9 Apr 2007 02:43
  • By Truck_Tech
  • joined 30 Mar'07 - 152 messages
  • United States
yes its [email address removed]
  • Posted 6 Apr 2007 23:14
  • By albert_h
  • joined 22 Aug'06 - 59 messages
  • California, United States
No,the lift pump contactor is controlled by the Multi-Function Swiitches(MFS) 1 & 2.Theses switches signal the Sequence Control Unit to turn on the pump,when that function is activated. At the top of the contactor panel,there is a box with a plastic over. That is the SCU. Inside that,there are (4) four cards,the power supply board,the seguence logic control board,the coil driver board,and the light control board. More than likely,the driver which controls the lift pump contactor is shorted. That's why the contactor activates,as sooon as the keyswitch is closed. Do you have an email address,where I can send you a schematic?
  • Posted 6 Apr 2007 07:45
  • Modified 6 Apr 2007 09:51 by poster
  • By Truck_Tech
  • joined 30 Mar'07 - 152 messages
  • United States
contactor tips are in need of change but not welded together and yes it does activate as soon as key switch is turned on? could the selector switch cause the pump to stay on?
  • Posted 5 Apr 2007 23:19
  • By albert_h
  • joined 22 Aug'06 - 59 messages
  • California, United States
Are the pump contactor tips welded together? Does the pump contactor activate,as soon as the keyswitch is turned on?
  • Posted 5 Apr 2007 09:03
  • By Truck_Tech
  • joined 30 Mar'07 - 152 messages
  • United States
35RRTT SERIAL #W61468
  • Posted 4 Apr 2007 23:07
  • By albert_h
  • joined 22 Aug'06 - 59 messages
  • California, United States
What model# truck is it?
  • Posted 4 Apr 2007 11:44
  • By Truck_Tech
  • joined 30 Mar'07 - 152 messages
  • United States

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Upcoming industry events …
October 15-16, 2025 - Las Vegas, United States
November 12-13, 2025 - London, United Kingdom
November 13-14, 2025 - Berlin, Germany
Global Industry News
edition #1242 - 7 August 2025
In this week’s Forkliftaction News , we take a closer look at the main theme coming out of the recent CeMAT Australia event in Sydney: automation; why some are holding back and why not everyone will automate... Continue reading
Fact of the week
In 1923, French tennis player René Lacoste was promised a crocodile leather suitcase by his captain if he won his next match. He lost the match but won the nickname "the crocodile" which he had sown onto his tennis attire. Ten years later he launched the first polo shirt and Lacoste, the first brand to feature a logo on its clothing.
Latest job alerts …
Atlanta Savannah Orlando Tampa Jacksonville West Palm, United States
Erie, PA, United States
Sioux Falls, SD, United States
Crown RR5225-30TT321
Braeside, Melbourne, Victoria, Australia
Hire
SMV (Konecranes) SL28-1200B
Balling, Denmark
Used - Sale
Fact of the week
In 1923, French tennis player René Lacoste was promised a crocodile leather suitcase by his captain if he won his next match. He lost the match but won the nickname "the crocodile" which he had sown onto his tennis attire. Ten years later he launched the first polo shirt and Lacoste, the first brand to feature a logo on its clothing.
Crown RR5225-30TT321
Braeside, Melbourne, Victoria, Australia
Hire
SMV (Konecranes) SL28-1200B
Balling, Denmark
Used - Sale
Fact of the week
In 1923, French tennis player René Lacoste was promised a crocodile leather suitcase by his captain if he won his next match. He lost the match but won the nickname "the crocodile" which he had sown onto his tennis attire. Ten years later he launched the first polo shirt and Lacoste, the first brand to feature a logo on its clothing.