Daedong CK22 - Hydraulic Systme

CK22/CK22H
TABLE OF CONTENTS
1. SPECIFICATION ....................................... 10-3
1.1 Control (MLS) Valve ........................... 10-3
1.1.1 Technical features.................... 10-3
1.1.2 Dimensional features ............... 10-3
2. OPERATING PRINCIPLE .......................... 10-4
2.1 Hydraulic scheme .............................. 10-4
2.2 Hydraulic circuit diagram
(CK22/CK22H) .................................... 10-5
2.3 Oil filter................................................ 10-7
2.3.1 Structure of oil filter................. 10-7
2.3.2 Function and operation ........... 10-7
2.4 Hydraulic block ................................... 10-8
2.4.1 Flow priority valve .................... 10-9
2.5 Joystick valve .................................... 10-11
2.5.1 Description and operation ..... 10-12
2.6 Auxiliary control valve (if equipped) .. 10-18
2.7 3 point hitch lifting system ............. 10-19
2.7.1 Operating of MLS (mita load
sensing valve) ......................... 10-19
2.7.2 Link mechanism in the lifting
system .................................... 10-23
3. TROUBLESHOOTING ............................. 10-26
3.1 Power lift assembly.......................... 10-26
3.2 Joystick valve .................................... 10-27
4. SERVICING .............................................. 10-28
4.1 Flow control valve ............................. 10-28
4.1.1 Bonnet..................................... 10-28
4.1.2 Flow control valve .................. 10-28
4.1.3 Relief valve assembly ............ 10-29
4.1.4 Flow divider assembly ........... 10-29
4.1.5 Directional valve ..................... 10-29
4.2 Joy-stick valve disassembly, inspection
and assembly ................................... 10-30
4.2.1 Joy-stick valve removal.......... 10-30
4.2.2 Joy-stick valve disassembly . 10-31
4.2.3 Joy-stick valve assembly ...... 10-32
4.3 Hydraulic lift cylinder ....................... 10-34
4.3.1 Draining the transmission fluid
................................................ 10-34
4.3.2 Platform .................................. 10-35
4.3.3 Separating rops and tires ..... 10-35
4.3.4 Seat......................................... 10-35
4.3.5 Fender ..................................... 10-36
4.3.6 Lower links ............................. 10-36
4.3.7 Fuel tank................................. 10-37
4.3.8 Life cover/hydraulic cylinder . 10-37
4.4 Lift arms removal and installation ... 10-38
4.5 Power lift assy assembly, dissembly and
installation......................................... 10-39
4.5.1 Cylinder removal .................... 10-39
4.5.2 Depth control mechanism removal
................................................ 10-40
4.5.3 Rockshaft removal ................. 10-44
4.5.4 Control(MLS) valve removal and
installation .............................. 10-46
4.5.5 MLS valve removal and reassembly
................................................ 10-47
HYDRAULIC SYSTME