SECTION 6 TROUBLESHOOTING
6-4 DD-29/31HF/38HF Vibratory Asphalt Compactors
Difficult Starting & Poor / Irregular Performance
Engine Makes Excessive Fumes
SYMPTOM POSSIBLE CAUSE SOLUTION
Difficult Starting and
Poor or Irregular
Performance
Low battery power Check battery
Battery discharged Charge battery, if necessary
Battery cable connections
loose or disconnected
Clean and tighten terminal
connections, cover with
acid-free grease
Using too high a viscosity oil in
low ambient temperatures
Use appropriate oil grade for the
ambient temperature conditions
Fuel line blockage due to wax
separation in winter
Change fuel filters, and bleed
fuel system, check for fuel line
leaks and loose connections.
Always use winter grade fuel in
winter.
Turn ignition key ON and OFF
Vibration turned ON Turn vibration OFF
Blocked air cleaner element Clean or replace element
Incorrect valve clearances Call for service to adjust
Defective fuel injectors Call for specialist service
Electric fuel pump failure Replace fuel pump
Fuel pump fuse F2 defective Replace fuse
SYMPTOM POSSIBLE CAUSE SOLUTION
Engine Makes
Excessive Fumes
Engine oil level too high
Drain engine oil to correct level
on the dip stick
Blocked air cleaner element Clean or replace element.
Low compression due to poor
condition of the valve or
incorrect valve clearance
Call for specialist service