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I bought a Caterpillar E120B Excavator not working. Found…

Customer Question
I bought a Caterpillar...

I bought a Caterpillar E120B Excavator not working. Found out that its a 24 volt system and needs 2 batterys to start. Anyway all the functions work except for the tracks. When pushing sticks forward and /or back it seems to want to move. The excavator moves about an inch or two, then something seems like is locking the tracks so the maching cannot go forward or back. What do you think is problem, I have little experience with this machine.

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Machine has been siting for years not running

Submitted: 4 years ago.Category: Construction and Road Equipment
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Answered in 3 hours by:
12/8/2017
Mechanic: Curtis B., Technician replied 4 years ago
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 2,415
Experience: Technican turned service manager with multiple lines of equipment and rental units.
Verified

Hello! Let's see if we can work together and come to a satisfactory conclusion!

How was excavator transported and moved? Were the tracks free? The planetary axles on each track may be disabled, so tracks don't drive, but freewheel. Check the drive on each side and see if the outer covers have been off.

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Customer reply replied 4 years ago
The machine is 50 miles away. I will check covers, however if you read my question correctly, the machine moves an inch or two when stick handles are pulled.
Mechanic: Curtis B., Technician replied 4 years ago

Do you have any idea if it was driving before, or it was freewheeled to load?

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Curtis B.
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 2,415
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Experience: Technican turned service manager with multiple lines of equipment and rental units.

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