Cat Lift Trucks (& Caterpillar) M50DP:
Caterpillar M50DP with error code F5

Hi all,

I have a Caterpillar M50DP which runs for about 15-30min, then will not move. The hydraulics still work, and the panel comes on, but the drive wheels stop working. The battery is fully charged, and the code I'm getting is F5. Looking on the back of the rear panel covering, F5 means "drive system failure, consult service manual".

Any idea on what might be going on?

Thanks!
  • Posted 19 Jul 2020 05:50
  • Discussion started by karter3000
  • British Columbia, Canada
Showing items 1 - 1 of 1 results.
i know its been a month since you posted but thought i'd throw in some info in case you're still stumped.
F5 indicates a fault in the drive system (we already know this)
the possible causes listed for that code are:
-Faulty: wire connections @ T1D, T2D, or (T3D if equipped).
-Failed: current limit set too low, failed D5D or D4D.
-Failed: driver board or failed logics

I would test the drive transistors and all the diodes and make sure none are blown.
the drive transistors are known to cause issues like this so i'd test them first.
  • Posted 16 Aug 2020 01:08
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

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.

Fact of the week
Bluetooth is named after the 10th-century Viking king, Harald Bluetooth, who united warring tribes in Denmark and Norway. In 1997, Jim Kardach from Intel gave the name to the technology because of its ability to unite different communication protocols, just as Harald united various tribes.
Global Industry News
edition #1235 - 19 June 2025
Greek philosopher Heraclitus is credited with the famous saying “change is the only constant”, and this week’s Forkliftaction News demonstrates this is certainly true in the case of the materials handling sector... Continue reading
Maxlion MTF30-45-2WD
Hangzhou, China
New - Sale
Enforcer FD50T-MMA
Braeside, Melbourne, Victoria, Australia
Hire

PREMIUM business

Hangzhou Manforce Material Handling Equipment Co., Ltd
Specializing in Nichi and conventional forklift products, we create significant value for all our partners!