Chapter X Troubleshooting
Section I General
To ensure excellent performance of Carter excavator, all components and parts are of high quality. Machine’s
performance and service life are determined not only by manufacturing quality and assembling quality, but also
maintenance quality.
The marketing representative and service engineer shall remind the user that preventive maintenance is the easiest
and most economical one among various ways of maintenance.
There are daily inspection and long-, medium- and short-term maintenance according to maintenance frequency.
Section II Troubleshooting of mechanism system
Noisy structural components
1.The loose fasteners make noise.
2.
Aggravated
abrasion between bucket
and end face of bucket rod
1.Inspect and tighten
2.Adjust the clearance to less than
1mm
Bucket teeth have dropped
during operation
1.Deformed spring and weakened
elasticity of bucket tooth pin
2.Unmatched bucket tooth pin and seat
Change the bucket tooth pin
The crawler has tangled up
1.Tighten the crawler
2.The guide wheel shall move
slowly in front on rugged road
The driving wheel moves fast in
Section III Troubleshooting of hydraulic system
The whole excavator
does not move
Low oil level of hydraulic oil tank that the
main pump sucks no oil
Change the filter and clean the system
Engine coupling is damaged (such as plastic
Change or repair the main pump
Adjust to regular pressure. If it fails
to increase the pressure of servo
overflow valve, disassemble to wash;
if the spring is fatigue, add a washer
or change the spring.
The servo system pressure is low or zero
Adjust to regular pressure. If it fails
to increase the pressure, disassemble
and wash. If the spring is fatigued,
ass a washer or change the spring.
The safety valve is set at low pressure or
Oil suction pipe of main pump explodes or
comes off
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