3
The noise is large.
(Four-
tractor)
(1) Front main drive gear meshing mark
is poor.
(2) Main drive bearing clearance is
excessive or damaged.
(3) Differential shaft is worn out or
damaged.
(4) Planet gear or shim is worn out.
(5) Final drive planet gearset meshing
mark is poor.
(1) Readjust the gear meshing
mark.
(2) Repair of replace it
(3) Replace differential shaft
(4) Replace planet gear or shim.
(5) Replace planet drive gear
4
Drive shaft
protective bushing
is hot. (Four-wheel
drive tractor)
(1) Drive shaft is severely bend or
distorted, causing friction.
(1) Correct of replace drive shaft
5
1. The noise in the
trans
loud. (Four-wheel
drive tractor)
(1) The high speed gear is higher than
real speed.
(2) Bearing or gear severely wears out.
(1) Engage low speed gear
(2) Repair of replace it
3.16.1.5 Hydraulic steering system failure and troubleshooting
Table 3-7 Hydraulic steering system failure and troubleshooting
Index: Failure Cause Troubleshooting
1
Oil
leakage
(1)
The rubber washer at each oil pipe connector or
bolt is loose.
(2) Valve body
, stator or rubber ring of rear cover
interface is damaged.
(3) The rubber washer of shaft journal is damaged.
(4) Bolt attaching steering gear joint is loose.
(1)
tighten the bolt.
(2)
washer.
(3) Replace rubber washer.
(4) Tighten bolts
2
Steering is
heavy.
(1)
The oil supply pumped from the gear pump is
insufficient. There is leakage in the gear pump or
the filter screen in the steering oil reservoir is
clogged. Steering at low speed is light and steering
at high speed is heavy.
(2) When turning the ste
ering wheel, the cylinder
moves sometimes.
(4)
Relief valve spring elastic force weakens or the
steel ball sealing is invalid. Light-duty steering is
light and heavy-duty steering is heavy.
(5) Oil viscosity is too thick.
(6) Steel ball check valve in the valve block is invalid.
Steering wheel is heavily turned at high speed and
at low speed, as well as with powerless of steering.
(7) oil leak (inside and outside the cylinder)
(1)
normal and clean the filter
screen.
(2) Empty
the air in the
system, check whether
there is air in the oil
absorption pipeline.
(4)
Clean the relief valve and
adjust the relief valve
spring pressure.
(5)
lubricant
(6) Maintain or replace related
parts
(7) Check and remove the oil
leak
3
Steering
failure.
(1) The pull pin is broken or distorted.
(2) Opening of linkage shaft is broken or distortion.
(3)
Rotor and universal drive shaft are reversely
installed.
(1) Replace the pull pin.
(2)
shaft
(3) Reinstall it
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