6
6
Precautions for use:
Precautions for use:
In the event of oil leakage from the cylinder body, check and replace the seal rings (12,14,
In the event of oil leakage from the cylinder body, check and replace the seal rings (12,14,
16). Also check the guide sleeve and
16). Also check the guide sleeve and cylinder body for damage.
cylinder body for damage.
Periodically check the bearings (10,19) and their seal rings (9,20), and replace promptly if
Periodically check the bearings (10,19) and their seal rings (9,20), and replace promptly if
damaged. Also change grease on a regular basis.
damaged. Also change grease on a regular basis.
Periodically check the bearings (26, 28), and their seal ring (25), and replace promptly if
Periodically check the bearings (26, 28), and their seal ring (25), and replace promptly if
damaged. Also change grease on a regular basis;
damaged. Also change grease on a regular basis;
Adjusting the
Adjusting the preload of
preload of the s
the steered wheel
teered wheel hub
hub bearing
bearings:
s: remove the
remove the counterweig
counterweight
ht and its
and its
cover panel, then jack up the rear of the frame with an automotive jack so that the wheel is
cover panel, then jack up the rear of the frame with an automotive jack so that the wheel is
off the ground. Tighten nut (3) until the steered wheel hub cannot be moved by hand, then
off the ground. Tighten nut (3) until the steered wheel hub cannot be moved by hand, then
rotate it 1/6 to
rotate it 1/6 to 1/4 turn in
1/4 turn in the opposite direction.
the opposite direction.
Adjusting the preload of the support bearings (10,19):
Adjusting the preload of the support bearings (10,19): Remove counterweig
Remove counterweight and its cover
ht and its cover
panel, then jack up the rear of the frame. Tighten nut (8) until the steering spindle cannot be
panel, then jack up the rear of the frame. Tighten nut (8) until the steering spindle cannot be
moved by hand, then rotate nut (8) 1/6
moved by hand, then rotate nut (8) 1/6 to 1/4 turn in
to 1/4 turn in the opposite direction.
the opposite direction.
Problem
Problem
Cause
Cause Analysis
Analysis
Remedy
Remedy
Steering wheel will not turn
Steering wheel will not turn
Pump
Pump damaged
damaged or
or faulty
faulty
Replace
Replace
Clogged or damaged priority valve
Clogged or damaged priority valve
Flush or
Flush or
replace
replace
Hose or connector damaged or pipe blocked
Hose or connector damaged or pipe blocked
Replace or
Replace or
flush
flush
Steering is hard
Steering is hard
Diverter valve pressure too low
Diverter valve pressure too low
Adjust
Adjust
pressure
pressure
Air in the oil line
Air in the oil line
Bleed off air
Bleed off air
Steering gear fails to centre, positioning spring
Steering gear fails to centre, positioning spring
broken or weak
broken or weak
Replace
Replace
spring
spring
Excessive leakage inside steering cylinder
Excessive leakage inside steering cylinder
Check piston
Check piston
seal
seal
Abnormal noise
Abnormal noise
Low
Low oil
oil tank
tank level
level
Add
Add oil
oil
Damaged
Damaged steering
steering gear
gear shaft
shaft rack
rack
Replace
Replace
Damaged
Damaged wheel
wheel bearing
bearing or
or support
support bearing
bearing
Replace
Replace
Inadequate
Inadequate lubrication
lubrication
Add
Add grease
grease
Clogged suction pipe or oil filter
Clogged suction pipe or oil filter
Flush or
Flush or
replace
replace
Oil leak
Oil leak
Defective steering cylinder seal ring or damaged
Defective steering cylinder seal ring or damaged
pipe or connector
pipe or connector
Replace
Replace
Damaged wheel hub bearing or support bearing or
Damaged wheel hub bearing or support bearing or
seal ring
seal ring
Replace seal
Replace seal
ring
ring
Steering angles of left and
Steering angles of left and
right drive wheels (front
right drive wheels (front
wheels) do not match
wheels) do not match
Controller
Controller parameters
parameters incorrect
incorrect
Adjust
Adjust
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