Bomag BW 156 D-3, Service Manual

Page: 87 / 190

Service Training
Trouble shooting single drum rollers generation 3
DTr 3
Machine does not drive (to both directions)
Check the control
cable (torn/
detached)
Replace / attach the
travel cable
OK ?
no
yes
OK ? OK ?
Check charge
pressure Fig. F6
OK ?
no
Check high
pressure Fig. 9
Check function of steering
and moveability
OK ?
no
yes
yes
Replace the
steering/charge
pump
Check charge pressure
relief valve Fig. F7
OK ?
no
yes
OK ?
no
yes
Replace the
charge pressure
relief valve
Check the leakage of the
brake Fig. F8
Check magnetic coil of
brake valve Fig. F10
OK ?
yes
no
Perform trouble
shooting in electric
system
Repair the
component after
the disconnection
of which the
charge pressure is
correct OK
OK ?
no
yes
Check brake releasing
pressure Fig. F11
OK ?
yes
Mechanical fault in
axle, drum
no
Replace the brake
valve