MBW CG200 - Manual (Page 48)

46
TROUBLE SHOOTING - PAVER
ALWAYS STOP ENGINE BEFORE PERFORMING ANY SERVICE
PROCEDURES. REMOVE IGNITION KEY AND ALLOW ENGINE TO COOL.
1. If the front wheel seems to hunt" to find straight ahead, check the steering
feedback potentiometer setting. Remove the elongated grommet from the
housing at the top of the steering spindle. If the set screw is loose, the
potentiometer will need to be reset. Remove the housing. Center the
potentiometer shaft and gently reposition the housing. Tighten the set screw
and replace the grommet. The set screw may be loctited for added security.
2. If machine will not drive, check the Rear Drive switch. If the side drive unit or the
optional right rear drive wheel is not used, flip the switch to the off position. (See
Assembly Instructions, page 18.)
3. If auto-height control does not appear to function correctly, ensure that the Side
Drive Unit switch is in the correct position. The Side Drive Unit switch transfers
auto-height control between the center wheel and the side drive unit wheel.
When using the Side Drive Unit, flip the switch to attached. When not using the
Side Drive Unit, flip the switch to detached.
4. When using the Side Drive Unit or the optional right rear drive wheel, the Rear
Drive switchs (left or right) may be in one of two positions:
1. ON: drive is on and drives with the front wheel.
2. OFF: drive is off and free wheels. (For use during turns)
5. If the engine is lugging or the exhaust is exceptionally black, check the position
of the vibrator pots. It is recommended that all three vibrator pots be set at
approximately the same position. Unused vibrators should be turned off. This
reduces the hydraulic load on the engine.
6. If the rear wheel is lifted off the ground by the automatic height control, adjust
the height trim pot to reposition the wheel at grade. Then, slowly turn the trim pot
back to its original setting, lowering the machine as it moves forward until it is
back at the original grade. If this occurs repeatedly, ensure that the grade is withĆ
in specifications and there are no dips or waves.
7. To prevent the rear wheel from lifting off the ground adjust the auto height limit
switch. The switch location and adjusting procedures are outlined on page 31.
8. If the automatic height control will not allow the mold to be lowered to its proper
position, check the location of the auto height limit switch. The switch may have
to be raised to allow the mold to be positioned correctly.
9. If the vibrator output seems low or if the travel speed seems slow, check the
hydraulic pump suction hoses (from filters to pumps) for kinks.