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Rebuilt transmission, Serial # 78G 2455 cat loader with

Customer Question
Rebuilt transmission Mechanic's Assistant:...

Rebuilt transmission

Mechanic's Assistant: What is the complete model and serial number of your machine?

Serial # 78G 2455 cat loader with rebuilt transmission will only move 12 inches forward or backward.Changed seals on valve bank, transmission lever seems to be engaging.

Mechanic's Assistant: Are you fixing this yourself? What have you tried so far?

Had a mechanic change the plates in the transmission, machine was down for 2 years prior.

Mechanic's Assistant: Anything else you want the equipment mechanic to know before I connect you?

The engine on the unit sounds good, fluid levels are topped .with no leaks.,

Submitted: 5 years ago.Category: Construction and Road Equipment
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Answered in 1 hour by:
4/8/2017
Mechanic: catmastertech, Technician replied 5 years ago
catmastertech
catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 4,006
Experience: Field service technician for CAT 19 years.
Verified

Hello,

What happens when the machine stops moving? Is the engine under a load? Does the transmission make any noises?

Have you tried removing the driveshafts to see if it is an axle problem?

Have you checked transmission and torque converter pressures?

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Customer reply replied 5 years ago
The 966C loader will go forward but will not go in reverse. Checked for axle issues, no load on engine, no noise on transmission.
Mechanic: catmastertech, Technician replied 5 years ago

Sorry for the late reply. I have been out most of the day. I am normally online at night so, most of my replies will be at night.

Are you saying the loader drives correctly in forward now?

Was the rebuild recent? Did the mechanic check the pressures to the clutches or the converter pressures?

If so, do you have them?

I would assume the transmission valve body has a problem. Maybe the shifter is not pulling the valve spool into reverse completely?

Has the control linkage adjustments been checked? Does the shifter pull in forward and reverse smoothly?

Have you checked the filter for metal or the strainer for other debris?

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