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Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 4373
Experience:  17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
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Case payloader 921 no forward or reverse what could be wrong

Customer Question

Case payloader 921 no forward or reverse what could be wrong fuses are good
Submitted: 3 months ago.
Category: Construction and Road Equipment
Expert:  Wayne replied 3 months ago.

Hi I'm Wayne

I will try to help you with this

is the trans fluid clean and full

what is the pressure on the gauge for trans

Customer: replied 3 months ago.
worked fine and now just stopped moving
Expert:  Wayne replied 3 months ago.

Hi

what is the pressure on the gauge for the trans

Customer: replied 3 months ago.
What gauge
Expert:  Wayne replied 3 months ago.

HI

you need to install a gauge for trans pressure

should be 17 bars , and check the solenoids on the side of trans

in rectangle box

Customer: replied 3 months ago.
Where is rectangle box
Expert:  Wayne replied 3 months ago.

HI

on the side of the trans

Customer: replied 3 months ago.
What side
Expert:  Wayne replied 3 months ago.

Hi

Right side sitting in the seat

Customer: replied 3 months ago.
No box with solenoids
Expert:  Wayne replied 3 months ago.

Hi

Yes there is a box with solenoids

I will opt out

and post back to the board

don't reply as it locks question back to me

Expert:  Dan replied 3 months ago.

Hi my name is***** will be glad to try to help. What is your machine serial number?

Expert:  Dan replied 3 months ago.

First check the oil level and condition for burnt smell, discoloration and the filter internally for fine metal/debris and suction screen for the same that would indicate an internal failure. If okay, test for power in and out of the shift controller in all gear positions and then to the shift solenoids going to the transmission. If there is power in but not out to the solenoids it means a faulty shift controller which is a common wear item when the contacts inside fail over time. If that is okay but you have metal/ debris in the filter and oil as well as suction screen it indicates an internal mechanical failure. If aluminum it is a converter failure if friction material it will indicate failed clutch packs. If steel material it can mean a failed transmission charge pump. A pressure test with test gauges to test the pressures at the valve body will be necessary to confirm if you have low pressure in all speeds indicating a faulty charge pump. Let me know

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