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6-1. Troubleshooting Guide

This troubleshooting guide provides information to diagnose common issues with an engine, electrical system, and other components. For engine issues, it describes potential problems such as low oil pressure, steam from the radiator, or abnormal exhaust, and recommends checking the oil level, coolant level, or fuel quality. Electrical system issues covered include problems with work lamps, battery charging, or starting. Other trouble areas listed are track slippage, slow hydraulic functions, and high hydraulic oil temperature. The guide suggests inspecting wiring, switches, fluid levels, and cleaning filters or coolers to identify potential problems.

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volvo
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94 views3 pages

6-1. Troubleshooting Guide

This troubleshooting guide provides information to diagnose common issues with an engine, electrical system, and other components. For engine issues, it describes potential problems such as low oil pressure, steam from the radiator, or abnormal exhaust, and recommends checking the oil level, coolant level, or fuel quality. Electrical system issues covered include problems with work lamps, battery charging, or starting. Other trouble areas listed are track slippage, slow hydraulic functions, and high hydraulic oil temperature. The guide suggests inspecting wiring, switches, fluid levels, and cleaning filters or coolers to identify potential problems.

Uploaded by

volvo
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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TROUBLESHOOTING GUIDE

1. ENGINE

※ This guide is not intended to cover every condition, however many of the more common possibili-
ties are listed.
Trouble Service Remark

The engine oil pressure lamp · Add the oil to the specified level.
lights up when engine speed is · Replace the oil filter cartridge.
raised after completion of warm
up. · Check oil leakage from the pipe or the joint.
· Replace the monitor.

Steam is emitted from the top · Supply coolant and check leakage.
part of the radiator (the pressure · Adjust fan belt tension.
valve).
Coolant level warning lamp lights · Wash out inside of cooling system.
up. · Clean or repair the radiator fin.
· Check the thermostat.
· Tighten the radiator cap firmly or replace the
cap itself.
· Replace the monitor.

The engine does not start when · Confirm fuel supply.


the starting motor is turned over. · Repair where air is leaking into fuel system.
· Check the injection pump or the nozzle.
· Check the valve clearance.
· Check engine compression.
· In cold weather, check if fuel warmer system Refer to the pages
is working normal. 2-4 and 3-41.

Exhaust gas is white or blue. · Adjust to specified oil quantity.


· Replace with specified fuel.

Exhaust gas occasionally turns · Clean or replace the air cleaner element.
black.
· Check the nozzle.
· Check engine compression.
· Clean or replace the turbocharger.

Combustion noise occasionally · Check the nozzle.


changes to breathing sound.

Unusual combustion noise or · Confirm fuel quality.


mechanical noise. · Check over-heating
· Replace the muffler.
· Adjust valve clearance.

6-1
2. ELECTRICAL SYSTEM

Trouble Service Remark

Work lamp does not glow brightly · Check for loose terminals and open-circuit wiring.
or flickers even when engine runs
· Adjust belt tension.
at high idle.

Battery charging lamp does not · Check the alternator.


go out even when engine runs at
· Check and repair wiring.
high speed.

Unusual noise is emitted from the · Check the alternator.


alternator.

Starting motor does not turn · Check and repair the wiring.
when starting switch is turned ON.
· Charge the battery.
· Check the starting motor.
· Check the safety relay.

The pinion of the starting motor · Charge the battery.


keeps going in and out.
· Check the safety relay.

Starting motor turns the engine · Charge the battery.


sluggishly.
· Check the starting motor.

The starting motor disengages · Check and repair the wiring.


before the engine starts up.
· Charge the battery.

The engine warming up lamp · Check and repair wiring.


does not go ON.
· Check the monitor.

The engine oil pressure lamp · Check the monitor.


does not light up when engine is
· Check the caution lamp switch.
stationary (when the starting
switch is in ON position.)

Battery charging lamp does not · Check the monitor.


light up when the engine is sta-
· Check and repair the wiring.
tionary.
(when the starting switch is in ON
position.)

6-2
3. OTHERS

Trouble Service Remark

Track slips out of place. · Adjust tension of track.


Excessive wear of the sprocket.
Bucket either rises slowly or not at · Add oil to specified level.
all.
Slow speed of travel, swing, · Add oil to specified level.
boom, arm and bucket.
Unusual noise emitted from pump. · Clean the hydraulic tank strainer.

Excessive oil temperature rise of · Clean and check the oi cooler.


hydraulic oil. · Adjust fan belt tension.
· Add oil to specified level.

6-3

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