Zoomlion QY30V, Manual

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09 - 7 09 - 7
D i a g n o s t i c s D i a g n o s t i c s
9.2.3 Propeller shaft 9.2.3 Propeller shaft
Problem Causes Remedy Problem Causes Remedy
Abnormal noise Abnormal noise
during vehicle during vehicle
start,
start,
accelerating and
accelerating and
decelerating.
decelerating.
Universal joint cross trunnion, needle roller wear Universal joint cross trunnion, needle roller wear
and loose or needle roller broken.
and loose or needle roller broken.
Replace Replace
damaged one
damaged one
Propeller shaft spline and expansion joint Propeller shaft spline and expansion joint
splineway have reached wear limit.
splineway have reached wear limit.
Replace Replace
damaged one
damaged one
Spline in the 2 Spline in the 2
n n
shaft of transmission and flange shaft of transmission and flange
splineway have reached wear limit. splineway have reached wear limit.
Replace Replace
damaged one
damaged one
Periodical noise Periodical noise
during driving.
during driving.
The higher the
The higher the
speed is, the
speed is, the
louder the noise
louder the noise
is. In a serious
is. In a serious
condition, the
condition, the
whole vehicle
whole vehicle
flutters and
flutters and
steering wheel is
steering wheel is
not flexible.
not flexible.
Propeller shaft bent or propeller shaft flange not Propeller shaft bent or propeller shaft flange not
welded properly to shaft tube.
welded properly to shaft tube.
Replace Replace
propeller shaft
propeller shaft
Fixing bolts for intermediate bearing bracket loose Fixing bolts for intermediate bearing bracket loose
and deviate from original position.
and deviate from original position.
Tighten or Tighten or
replace
replace
Bolts Bolts connecting connecting adjacent adjacent propeller propeller shafts shafts loose. loose. Tighten Tighten
Propeller Propeller shaft shaft balance balance block block falls falls off. off. Replace Replace or or repair repair
Noise during Noise during
driving. The
driving. The
higher the speed
higher the speed
is, the louder the
is, the louder the
noise is.
noise is.
Intermediate bearing deviate from original position Intermediate bearing deviate from original position
and has reached wear limit.
and has reached wear limit.
Adjust or replace Adjust or replace
Bearing Bearing ball ball of of intermediate intermediate bearing bearing falls falls off. off. Replace Replace bearing bearing
Insufficient oil in Intermediate bearing. Insufficient oil in Intermediate bearing.
Add #2 lithium Add #2 lithium
base grease base grease