CHAPTER 6 8454
6-80
D569-W02 May-2003
D. TROUBLE SHOOTING
Checking of hydraulic block
1.Install the pressure gauge on coupler socket assembly to check the
pressure value.
- Standard pressure value : 165 kg/cm
2
~ 190 kg/cm
2
(2,347 ~ 2,700 psi)
(engine rotation: 2,600 rpm).
- Installation of pressure gauge: (ref. schematic diagram)
- when pressure is below 50 kg/cm
2
(711 psi), replace or clean
hydraulic block.
Ref.) Check the pressure by measuring the pressure gauge between
port A and port B with external operating machine.
When using hydraulic block, please be noted that
- Use the external operating machine by turning the adjusting screw
(5) to the CL direction.
- Use the 3 point link by turning the adjusting screw (5) to the OP direction.
(Hydraulic block)
Components Trouble Checking Remark
1.Hydraulic block
How to adjust the pressure of hydraulic block
- When below standard pressure, add the adjusting seam (2) to
adjust (check the pressure with pressure gauge).
- In excessive pressure (over 180kg/cm
2
, 2,560 psi), poppet is open.
(1) Plain Washer
(2) Adjusting Seam
(3) Poppet
(4) External Output Port
(5) Adjusting Screw
(A) A Port
(B) B Port
(C) In (Pump)
(D) Out
( poppet (3) closed ) ( poppet (3) open)
569W6B1A
569W6B2A
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