Zoomlion QY30V, Руководство пользователя

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09 - 9 09 - 9
D i a g n o s t i c s D i a g n o s t i c s
9.2.5 Steering system 9.2.5 Steering system
Problem Causes Remedy Problem Causes Remedy
Hard steering Hard steering
Oil pump serious inner wear Oil pump serious inner wear results in hard results in hard
steering steering
Replace and Replace and
check
check
Seal elements of oil pump damaged, resulting in Seal elements of oil pump damaged, resulting in
oil leakage
oil leakage
Replace seal Replace seal
elements
elements
Oil level is too low and the oil viscosity does not Oil level is too low and the oil viscosity does not
comply with the requirement, resulting in
comply with the requirement, resulting in
insufficient steering power. Air enters into the
insufficient steering power. Air enters into the
system.
system.
Check the oil Check the oil
level and fill
level and fill
required oil.
required oil.
Deaerate. Check
Deaerate. Check
oil level and pipe
oil level and pipe
fittings for
fittings for
tightness.
tightness.
Drive elements of oil pump damaged. Drive elements of oil pump damaged.
Check and Check and
replace
replace
Spring of safety valve in oil pump is fatigue Spring of safety valve in oil pump is fatigue or or
breaks, resulting in oil over-returned. breaks, resulting in oil over-returned.
Repair safety Repair safety
valve and replace valve and replace
spring.
spring.
Oil leakage occurs in oil pipe fittings and pipes are Oil leakage occurs in oil pipe fittings and pipes are
blocked or bent.
blocked or bent.
Check, clean and Check, clean and
replace the pipes
replace the pipes
and fittings.
and fittings.
Filter soiled, poor cleanliness Filter soiled, poor cleanliness
Clean filter and Clean filter and
cartridge. Oil
cartridge. Oil
change.
change.
Serious inner leakage occurs in steering gear. Serious inner leakage occurs in steering gear.
Rectify or replace Rectify or replace
sealing ring
sealing ring
Front wheels blocked (brake cannot return to Front wheels blocked (brake cannot return to
original position)
original position)
Rectify the Rectify the
blocked parts
blocked parts
Steering knuckle main pin, thrust bearing and Steering knuckle main pin, thrust bearing and
adjusting shim damaged, resulting in clearance adjusting shim damaged, resulting in clearance
too large or small.
too large or small.
Replace bearing Replace bearing
and adjusting
and adjusting
shim. Adjust
shim. Adjust
clearance.
clearance.
Quick steering is Quick steering is
hard
hard
Inner Inner leakage leakage Rectify Rectify oil oil pump pump
Oil level is too Oil level is too low. low.
Fill oil equalizing Fill oil equalizing
reservoir up to
reservoir up to
overflow on filler
overflow on filler
neck
neck
Oil seal for steering wheel is damaged or has Oil seal for steering wheel is damaged or has
reached wear limit, resulting inner leakage.
reached wear limit, resulting inner leakage.
Replace oil seal Replace oil seal
Air enters in Air enters in
Deaerate and Deaerate and
check connecting
check connecting
t f t f