HYDRAULIC SYSTEM
KUKJE MACHINERY CO., LTD.
143
4. CHECKING, DISASSEMBLING AND SERVICING
4) Three Point Hydraulic System
< Relief valve setting pressure >
1. Remove the seat under cover.
2. Remove the plug from front of hydraulic cylinder
body.
3. Install the adapter. Then connect the cable and
pressure gauge to adapter.
4. Remove the feedback rod lock nut and spring.
5. Start the engine and set at maximum speed.
6. Move the hydraulic control lever all way up to
operate the relief valve and read the gauge.
7. If the pressure is not within the factory
specifications, adjust relief valve with the
adjusting shims.
8. After checking the pressure, reinstall the spring
and feedback rod lock nut.
Relief valve
setting pressure
Factory
spec.
13.2 to 13.7 ㎫
135 to 140 kgf/㎠
1,920 to 1,991 psi
▷ Condition
9 Engine speed : Maximum
9 Oil temperature : 45 to 55℃, 113 to 131℉
▷ Reference
9 Thickness of shims(2)
0.1 mm (0.0039 in.)
0.2 mm (0.0079 in.)
0.4 mm (0.0157 in.)