6
-
51
42hw-201601
Chapter 6 hydrauliC system
6
3015r(h)/3515r(h)/4015r(h)/F36r(h)/F42r(h) traCtOr
5. trOuBleshOOtiNG
prOBlems
Cause Or symptOm
sOlutiON
The 3-point hitch
cannot be lifted.
Improperly installed control valve
Damaged control valve
Foreign material stuck in control valve or spool stuck
Insufficient transmission fluid
Clogged oil filter
Damaged hydraulic pump
Damaged cylinder piston ring of hydraulic cylinder case
•
•
•
•
•
•
•
Remove and re-install it.
Replace it with a new one.
Remove, clean and repair it.
Add transmission fluid.
Clean or replace it.
Repair or replace it.
Check the backup ring and O-ring
and replace it as necessary.
•
•
•
•
•
•
•
The 3-point hitch
cannot be lowered.
Damaged stop valve
Foreign material stuck in control valve
•
•
Check and repair the stop valve.
Remove and clean the
control valve.
•
•
Impossible to drive
forward or backward
[HST MODEL]
Damaged power train
Clogged HST internal circuit
Incorrectly set neutral position of HST pedal
Insufficient hydraulic oil amount
Clogged HST filter
Faulty HST
•
•
•
•
•
•
Check and adjust the power train
Check if the check valve, relief valve,
etc. and clean them accordingly.
Set the HST neutral range correctly
add oil
Clean or replace
Replace the HST
•
•
•
•
•
•
Excessively heated oil
[HST MODEL]
Insufficient oil in transmission
Low setting pressure of relief valve
Low discharge pressure of gear pump
Clogged oil cooler
•
•
•
•
add oil
Set the setting pressure properly
or replace the relief valve
Check and repair the pipe
Clean the filter
Clean or replace the valve seat
Clean
•
•
•
•
•
•
Impossible to stop with
lever in HST pedal
neutral position
[HST MODEL]
Incorrectly set neutral position of HST
Faulty neutral valve
•
•
adjust the neutral position
correctly
Clean and remove foreign
materials
•
•
Содержание 3015h
Страница 6: ......
Страница 162: ... BranSOn tractors Co Ltd MEMO ...
Страница 172: ... BraNSON tractors Co ltd MEMO ...
Страница 278: ... BranSon tractors Co ltd MEMO ...
Страница 380: ......
Страница 382: ......
Страница 384: ......
Страница 432: ......
Страница 438: ......
Страница 447: ...Chapter 8 INDEX ...
Страница 454: ... BraNSON tractors Co Ltd MEMO ...