NUOMAN NM-E10 MINI - Page 53

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
Symptom
Possible causes
How to solve
The main pump supplying fuel to unilateral
Change
crawler is damaged.
The main valve rod is stuck and the spring is
Repair or change
The unilateral crawler
broken
fails to move
Traveling motor is damaged
Change
The upper and lower chambers of swivel
Change the oil seal or clean the
joint are connected
assembly
Fuel pipe of traveling system explodes.
Change
Less oil in hydraulic oil tank
Add enough hydraulic oil
Low engine rpm
Adjust engine rpm
Low system safety valve pressure
Adjust to specified pressure
Serious leak inside the main pump
Change or repair the pump
The traveling motor, rotation motor and
cylinder are worn of different degree, which
Change or repair the worn parts
causes internal leak.
The whole excavator
The
aged
sealing
components,
worn
Change hydraulic oil, change sealing
hydraulic
elements,
degraded
oil
of
old
moves slowly or
components of the whole machine,
excavator cause the operation speed becomes
powerless
adjust the fit clearance and pressure
powerless
along
with the
increase
of
of hydraulic components.
temperature.
The
blocked
engine
filter causes
serious
Change the element
decrease of loaded rpm and even flames out.
The blocked hydraulic filter accelerates
Clean and change the element
abrasion of pump, motor and valve and leads
according to the maintenance
to internal leak.
schedule.
Serious between main valve rod and valve
Repair the valve rod
hole causes serious internal leak
Central rotation connector is damaged.
Change the oil seal and change the
groove if it is damaged
The high pressure chamber and low pressure
chamber of traveling operation valve is
Change
The right and left
connected.
Serious leak
inside
the traveling operation
Change
traveling systems do not
valve
move (no other
abnormalities)
Low overloaded pressure of traveling valve
Adjust and grind
of main valve or the valve rod is stuck.
The left and right traveling reducers fail
Repair
The left and right traveling motors fail
Repair
The oil pipe explodes
Change
Wrong adjustment of variable point of main
Adjust or repair
valve or serious internal leak of a pump
Deviation during
Internal or external spring of one traveling
traveling (no other
valve core of main valve is damaged or
Change
abnormalities)
tightened
The
traveling motor
leaks inside
due
to
Repair or change
abrasion.