TCM FB-8 Series, Service Manual

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リリーフバルブ
ロックナット
アジャストスクリュ
■
Oil pressure adjustment
①
Remove the plug of the check port (G) located in the inlet section of the control valve, then set
there a 20 MPa {200 kgf/cm
2
} [2901 psi] capacity oil pressure gauge.
②
Operate the tilt lever till the cylinder piston reaches it stroke end. Then measure the hydraulic
pressure at that position.
③
If the pressure is not as specified, loosen the relief valve lock nut and adjust it by turning the
adjustment. If the measured pressure is higher than the specified, once lower it by turning the
adjustment screw counterclockwise till it goes down below the specified level. Then turn the
screw clockwise this time till the specified level is acquired.
④
When adjustment is complete, tighten the lock nut.
Fig. 7.4
Unit: MPa {kgf/cm
2
}[psi]
1 to 1.5 t 1.8 t 2.0 to 3.5 t
Pressure setting 13.7 {140} [1990] 15.7 {160} [2280] 17.2 {175} [2490]
RELIEf VALVE
LOCK NUT
ADJUSTMENT SCREW
7. HYDRAULIC SYSTEM