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Chapter 9

Hydraulic system

SECTION 1. GENERAL DESCRIPTION ---------------------------------9-1

SECTION 2. SPECIFICATIONS --------------------------------------------9-2

SECTION 3. DISASSEMBLY AND ADJUSTMENT --------------------9-3

1.Hydraulic system ------------------------------------------------------------9-4

2.Disassembly--------------------------------------------------------------------9-5

3.Reassembly --------------------------------------------------------------------9-5

3.1 General precautions ---------------------------------------------------- 9-5

3.2 Reassembly steps -------------------------------------------------------- 9-6

4.Adjustment of the link mechanism -------------------------------------- 9-8

5.Special jigs for link adjustment -------------------------------------- 9-11

SECTION 4. MAJOR COMPONENT OF THE HYDRAULIC

SYSTEM -------------------------------------------------------9-12

1.main control valve ------------------------------------------------------- 9-21

2.Flow-divider --------------------------------------------------------------- 9-31

3.Pressure control valve ---------------------------------------------------9-22

4.Flow control valve---------------------------------------------------------9-35

5.Safety valve ----------------------------------------------------------------9-37

6.Relief valve------------------------------------------------------------------9-37

7.Gear Pump------------------------------------------------------------------9-39

8.Filter--------------------------------------------------------------------------9-40

SECTION 5.Remote hydraulic control(Optional)-----------------------9-41

1.General description -------------------------------------------------------9-41

2.Functions -------------------------------------------------------------------9-41

3.Specifications---------------------------------------------------------------9-43

SECTION 6. TROUBLESHOOTING -----------------------------------9-46

*This chapter is applied to old version

TYM T390 Service Manual

Other manuals for TYM T390