New Holland Workmaster 25S, Operator'S Manual

Page: 188 / 208

8 - TROUBLESHOOTING
Problem
Possible Cause Correction
Carbon accumulation on valve seat See your NEW HOLLAND dealer for ser-
vice
Incorrect valve gap adjustment
See your NEW HOLLAND dealer for ser-
vice
Incorrect fuel injection timing See your NEW HOLLAND dealer for ser-
vice
Lack of fuel supply Check fuel system for restriction
Air filter clogged Clean or replace air filter
The color of exhaust
smoke is white Low engine operating temperature Allow engine to obtain higher operating
temperature
Engine burning engine oil See your NEW HOLLAND dealer for ser-
vice
Engine coolant entering engine exhaust See your NEW HOLLAND dealer for ser-
vice
The color of exhaust gas
is black. Air filter clogged Clean or replace engine air filter
Excessive fuel supply See your NEW HOLLAND dealer for ser-
vice
Faulty fuel injector See your NEW HOLLAND dealer for ser-
vice
Instrument panel engine
oil pressure indicator light
is "ON" during operation. Lack of engine oil Add engine oil as needed
Low viscosity of engine oil Replace oil with proper viscosity type
Faulty pressure switch Replace switch
Engine oil filter clogged Replace the filter
Instrument panel battery
charging indicator is "ON"
during operation. Bad electrical connection Check battery terminals, ground, and repair
as needed
Faulty alternator Repair or replace alternator as needed
Faulty battery Replace battery
Incorrect fan belt tension or belt broken Adjust belt tension or replace belt
Engine overheating Radiator screen covered in grass Clean radiator screen or fins as needed
Lack of coolant Add coolant as needed
Fan belt slipping or belt is broken Adjust belt tension or replace belt
Mechanical service brakes - Troubleshooting
Problem Possible Cause Correction
After engaging brake
pedal, pedal will not
return Return spring damaged Replace the spring
Damaged internal brake parts See your NEW HOLLAND dealer for ser-
vice
Brake does not work or
only one side works. Incorrect brake pedal free play See your NEW HOLLAND dealer for ser-
vice
Brake disc lining worn or broken See your NEW HOLLAND dealer for ser-
vice
Regulated/Low pressure system - Troubleshooting
Problem Possible Cause Correction
The three-point linkage
will not raise Engine speed too low Increase the engine speed to at least
1500 RPM
Three point hitch is over loaded Reduce the load on the three point hitch
Lack of transmission / hydraulic oil Add oil as needed
Air in the hydraulic suction pipe Tighten the hydraulic filter and check all hy-
draulic suction connections
Hydraulic filter clogged Replace hydraulic filter
8-2