Clutch - Troubleshooting; Mechanical Service Brakes - Troubleshooting; Regulated/Low Pressure System - Troubleshooting - New Holland Workmaster 25 Tier 4B Operator's Manual

Problem
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 fault icon is
illuminated on the
instrument panel.
Engine overheating

Clutch - Troubleshooting

Problem
Clutch slips
Clutch does not release

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
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
Faulty engine oil pump
Engine oil filter clogged
Bad electrical connection
Faulty alternator
Faulty battery
Incorrect fan belt tension or belt broken
Electrical fault with the engine speed con-
trol unit.
Lack of coolant
Fan belt slipping or belt is broken
Dirt attached to the radiator or prescreen
Possible Cause
Incorrect adjustment of clutch pedal free
play
Clutch disc lining worn or broken
Excessive clutch pedal free play
Clutch disc damaged
Possible Cause
Return spring damaged
Lack of lubrication in brake shaft linkage
parts
Damaged internal brake parts
Incorrect brake pedal free play
Brake disc lining worn or broken
Left/right pedal free play is different
Possible Cause
Lack of transmission / hydraulic oil
Air in the hydraulic suction pipe
Hydraulic filter clogged
Repair engine as needed
Repair engine as needed
Clean or replace engine air filter
Repair fuel injection pump as needed
Repair or replace fuel injector
Add engine oil as needed
Replace oil with proper viscosity type
Replace switch
Repair oil pump as needed
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
See your NEW HOLLAND dealer for ser-
vice.
Add coolant as needed
Adjust belt tension or replace belt
Clean radiator fins or screen as needed
Adjust the pedal free play correctly
Replace clutch disc
Adjust the pedal free play
Repair or replace clutch disc
Replace the spring
Clean and lubricate linkage as needed
Repair internal brake parts as needed
Adjust brake pedal free play to correct
specification
Replace brake discs as needed
Adjust both brake pedal free play to same
specification
Add oil as needed
Tighten the hydraulic filter and check all hy-
draulic suction connections
Replace hydraulic filter
8-2
Correction
Correction
Correction
Correction