Service and Maintenance
BX52R, BX72R, BX102R
3 PH Roller-feed Chipper
62
Problem
Cause
Solution
Feed rollers intermittent or
not turning
Feed roll control bar set to stop.
Move to Forward or Reverse position.
Engine speed not at or above minimum setting.
Set engine throttle for maximum rpm. Make sure engine is properly
P3 PULSE programming incorrect.
Check that P3 PULSE settings are at factory specifications. Reset if
P3 PULSE not receiving signal.
Inspect rotor sensor for damage. Replace unit if required.
Inspect rotor sensor mount or sheave mounted indicator plate for
damage or misalignment. Repair or replace.
Check P3 PULSE unit for output signal. Replace unit if required.
Check harness for bad ground connection.
Inspect P3 PULSE wiring harness for damage. Repair or replace if
damaged.
Feed control bar malfunction.
Check feed control bar switches. Replace, reposition pickup trigger.
Slow hydraulic flow.
See Flow Control Valve Adjustment page 29.
Hydraulic oil is contaminated. Inspect oil condition for dirt, foaming.
Replace oil.
No electrical power.
Check battery, engine charging system for power.
Hydraulic motor slow.
Check hydraulic circuit, oil and motor condition. Replace if required.
Roller drive key sheared.
Check and replace.
