Cat Lift Trucks (& Caterpillar) M50D SA:
Code F3

Can some one help me with code F3?
  • Posted 3 Jul 2014 00:33
  • Discussion started by ChrisD
  • Kentucky, United States
Showing items 1 - 3 of 3 results.
Thanks for the Help, Best Regards
  • Posted 17 Aug 2021 23:44
  • Reply by MM2952
  • Texas, United States
M. Moreno
F3 is a pump system failure.
most likely cause is a pump transistor T1P or T2P failure.
Now in the possible causes section of the problem diagnosis section it gives more detailed explanations:
"Shorted T1P, T2P (T3P if equipped); Open wiring; Driver board defect; Logics defect; Open circuit pump motor or PA1, PS2 cables; Welded pump contactor (if equipped). Shorted Z321 or Z322 (if equipped)."

you will need the diagram schematic that is usually located underneath the hood that has the diagram of the electrical system with labeled components and a condensed troubleshooting and onboard self check chart for self diagnosis and/or the service 'troubleshooting' section of the manual, some tools to remove the components for testing and a vom meter, (and a handyman tester if you need to gate or leak test any transistors).

In most cases these issues wind up being a bad T1P or T2P transistor or a welded contactor (if equipped). The transistors should be disconnected before checking.
  • Posted 17 Aug 2021 21:33
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
Hi Chris
Did You get any suggestions on this code F3?
Please let me know. Thanks
  • Posted 17 Aug 2021 01:57
  • Reply by MM2952
  • Texas, United States
M. Moreno

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.

Upcoming industry events …
May 09-11, 2025 - Bangalore, India
October 21-23, 2025 - Panama City, Panama
July 15-17, 2025 - Hong Kong, Hong Kong
Global Industry News
edition #1228 - 1 May 2025
There is simply no ignoring the push for a greener, more sustainable materials handling equipment industry as manufacturers and customers alike seek eco-friendly solutions to reduce or eliminate carbon emissions... Continue reading
Fact of the week
On average, people read 10-30% slower from a screen than from paper.
Latest job alerts …
Louisville, KY, United States
Dubuque, IA, United States
Louisville, KY, United States
JCB 533-105
Braeside, Melbourne, Victoria, Australia
Hire
Toplift Ferrari TFC36-48
Stoney Creek, Ontario, Canada
Used - Sale
USD1
Movers & Shakers
Linda Häkkilä Linda Häkkilä
vice president, Investor Relations, Konecranes
vice president operations, Elokon Group
President, EP Equipment Europe
Senior vice president human resources, Kalmar
Upcoming industry events …
May 09-11, 2025 - Bangalore, India
October 21-23, 2025 - Panama City, Panama
July 15-17, 2025 - Hong Kong, Hong Kong
Fact of the week
On average, people read 10-30% slower from a screen than from paper.