Mechanical Service Brakes - Troubleshooting; Regulated/Low Pressure System - Troubleshooting - New Holland Workmaster 25S Operator's Manual

Problem
The color of exhaust
smoke is white
The color of exhaust gas
is black.
Instrument panel engine
oil pressure indicator light
is "ON" during operation.
Instrument panel battery
charging indicator is "ON"
during operation.
Engine overheating

Mechanical service brakes - Troubleshooting

Problem
After engaging brake
pedal, pedal will not
return
Brake does not work or
only one side works.

Regulated/Low pressure system - Troubleshooting

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