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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 ------------------------------------------------------------9-3

2.Disassembly--------------------------------------------------------------------9-4

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

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

3.2 Reassembly steps-------------------------------------------------------- 9-7

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

SECTION 4. MAJOR COMPONENT OF THE HYDRAULIC

SYSTEM -------------------------------------------------------9-10

1.main control valve ------------------------------------------------------- 9-10

2.Flow-divider --------------------------------------------------------------- 9-19

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

4.Flow control valve---------------------------------------------------------9-25

5.Safety valve ----------------------------------------------------------------9-27

6.Relief valve------------------------------------------------------------------9-27

7.Gear Pump------------------------------------------------------------------9-29

8.Filter--------------------------------------------------------------------------9-35

SECTION 5.Remote hydraulic control(Optional)-----------------------9-36

1.General description-------------------------------------------------------9-36

2.Functions -------------------------------------------------------------------9-36

3.Specifications---------------------------------------------------------------9-37

SECTION 6. TROUBLESHOOTING -----------------------------------9-38

TYM T450 Service Manual

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