New Holland Workmaster 25 Tier 4B, Руководство оператора

Страница: 173 / 198

8 - TROUBLESHOOTING
8 - TROUBLESHOOTING ###_8_###
Symptom(s)
Troubleshooting - Foreword
The following troubleshooting information will help you in the unlikely event a problem occurs with your equipment.
Reading the troubleshooting chart is easy. The left-hand column will be the problem you may be having with your
equipment. The center column explains the possible cause or causes of the problem. The right-hand columns gives
you corrective actions you can take to solve the problem. If you feel unsure how to handle the problem with your
equipment do not hesitate to contact your NEW HOLLAND dealer for assistance.
Engine - Troubleshooting
Problem Possible Cause Correction
The start motor does not
rotate with the key switch
in the (START) position. Low battery charge Charge or replace
Loose battery or starter cable terminals Tighten the terminal
Key switch faulty Repair or replace switch
Safety start switch not completing circuit Depress clutch pedal fully
PTO safety switch is not in "OFF" position Place PTO switch in "OFF" position
Starter motor faulty
Repair or replace starter motor
The start motor rotates
but the engine does not
start Low battery charge Charge or replace battery
Air in fuel system Bleed out the air
Fuel filter clogged Clean or replace the filter
Fuel shutoff valve on fuel filter in closed
position Open the valve
Fuel shutoff solenoid on fuel injection pump
stuck in off position Check solenoid for proper operation, repair
as needed
Engine speed is irregular Air in fuel system Bleed the fuel system
Fuel filter clogged Clean or replace the filter
Injection nozzle clogged Repair or replace nozzle
Fuel leakage
Repair fuel system
Irregular fuel injection Repair or replace fuel injection pump
Engine stops suddenly
during operation Fuel shortage Add fuel and bleed air from fuel system
Faulty fuel injector Repair or replace injector
Faulty fuel injection pump Repair or replace injection pump
Internal parts of engine seized due to lack
of lubrication Repair engine as needed
Engine speed is more
than maximum rated high
idle speed Fault with the engine speed control unit.
See your NEW HOLLAND dealer for ser-
vice.
Engine stops at low speed Faulty injection pump Repair or replace injection pump as needed
Engine valve gap is not correct Adjust the gap
Low fuel injector pressure Repair fuel injector as needed
Low engine power Fuel injector nozzle clogged Repair injector as needed
Carbon accumulation on valve seat Repair valve and seats as needed
Incorrect valve gap adjustment Adjust valve gap to correct amount
Incorrect fuel injection timing Check and adjust fuel injection timing as
needed
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
8-1