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NUOMAN NM-E10 MINI - Chapter XII Troubleshooting; Section II Troubleshooting of mechanism system; Section III Troubleshooting of hydraulic system

NUOMAN NM-E10 MINI
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Shandong Nuoman Engineering Machinery Co.,Ltd
Business Room, No. 7, Zhongshan West Road, Gulou Street Office, Yanzhou Dist., Jining, Shandong, CN
TEL/Fax:+8618266821667 Whatsapp/Wechat:+8618266821667
Chapter XII Troubleshooting
Section I General
To ensure excellent performance of Rhinoceros 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
Symptom
Possible causes
How to solve
1.
The loose fasteners make noise.
1.
Inspect and tighten
Noisy structural components
2.
Aggravated
abrasion
between
2.
Adjust the clearance to less
bucket and end face of bucket rod
than 1mm
1.
Deformed
spring and
weakened
Bucket teeth have dropped
elasticity of bucket tooth pin
Change the bucket tooth pin
during operation
2.
Unmatched bucket tooth pin and
seat
1.
Loose crawler
1.
Tighten the crawler
The crawler has tangled up
2.
The driving wheel moves fast in
2.
The guide wheel shall move
front on rugged road.
slowly in front on rugged road
Section III Troubleshooting of hydraulic system
Symptom
Possible causes
How to solve
Low oil level of hydraulic oil tank that the
Add enough hydraulic oil
main pump sucks no oil
Oil filter is blocked
Change the filter and clean the
system
Engine coupling is damaged (such as plastic
Change
plate, elastic plate)
The main pump is damaged
Change or repair the main pump
The whole excavator
Adjust to regular pressure. If it fails
to increase the pressure of servo
does not move
The servo system pressure is low or zero
overflow valve, disassemble to wash;
if the spring is fatigue, add a washer
or change the spring.
Adjust to regular pressure. If it fails
The safety valve is set at low pressure or
to increase the pressure, disassemble
stuck.
and wash. If the spring is fatigued,
ass a washer or change the spring.
Oil suction pipe of main pump explodes or
Change with a new one
comes off