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Bomag BW80 won't move on semi rough terrain

A

anilde2010

Member
Joined
Oct 27, 2012
Messages
19
Location
Trinidad
Occupation
Construction Contractor
Hey Guys,
I have a Bomag BW80 ADH2. When the hydraulic oil is cold, the machine is working fine, forward and backward in any terrain. When the hydraulic oil heats up, it doesn't want to move forward nor backward on uneven terrain.
I just replaced all the hydraulic oil and the filter and still the same issue.

By chance, does anyone have the service repair manual for this roller?

Any ideas?
Thanks
 
A

anilde2010

Member
Joined
Oct 27, 2012
Messages
19
Location
Trinidad
Occupation
Construction Contractor
Problem resolved.
1) hydraulic travel pump was removed and pump internals were polished to provide a proper sealing surface. Roller works like new
2) brake solenoid coil is trash. It’s getting power and stroking the solenoid when theirs is no pressure, but it’s too weak to move the solenoid when there is pressure. I swapped the vibration coil until I can source one.
 
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