Cat Lift Trucks (& Caterpillar) P7000:
Won't go forward

When I put it in reverse it engages and goes, But when I put it in forward it engages but when you step on the gas pedal it won't move. Any suggestions?

Transmission oil is up to level but looks really old and sluggish.
  • Posted 14 Sep 2018 03:19
  • Discussion started by wilvert_c
  • Texas, United States
Showing items 1 - 1 of 1 results.
first off what condition is the fluid? Is it dark? look or smell burnt? You said old and sluggish?

Then pull the strainer assy at the base of the case and check it for debris and clean it.
Then check the inching pedal adjustment, it needs to be verified to insure it is releasing correctly.

A pressure check should be performed on the transmission controls for correct main pressure and clutch, torque converter and lubrication oil pressure.
There are 4 test plugs on the control valve that need to be removed to check for each pressure rating. The service manual has the proceedures and diagram for the control valve test ports and a pressure chart to follow. If you do not have a service manual you should be able to obtain one from your local cat dealership.

And lastly if the pressure checks test ok then the control valve needs to be removed to gain access to the clutch pack area to check the clutch plates for wear.

In most cases when i've encountered this scenario when it drives good in reverse and does not want to pull in forward(but engages and tries to pull), it has almost always been worn out forward clutch plates. When you drain the fluid and check the strainer you will most likely find alot of trash/debris. In this case the transmission is replaced with a subsidized replacement transmission. (contact your cat dealer for details on subsidized transmissions).
  • Posted 17 Sep 2018 23:05
  • Modified 17 Sep 2018 23:06 by poster
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

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