SPECIFICATIONS
STANDARDS FOR JUDGING PERFORMANCE
II-19 TB53FR
METHODS FOR INSPECTING PERFOR-
MANCE
Hydraulic Oil Pressure (Main Relief Valve Set
Pressure)
Boom, Arm
Measuring Method
• Engine : Rated r.p.m.
• Hydraulic Oil Temp. : 50~60°C
• Mount the pressure gauge on the pressure detec-
tion port, operate the desired hydraulic circuit
and measure the relief pressure.
Adjusting Method
1. Loosen locknut (2), then begin adjusting pressure
by turning setting screw (1).
Turning clockwise ................ raises the set pressure.
Turning counterclockwise .... lowers the set pressure.
2. In order to keep the setting screw from turning
after pressure has been adjusted, tighten the lock-
nut while at the same time holding the setting
screw firmly in place.
3. Operate the relief valve once more to confirm that
the pressure that has been set it stabilized.
Circuit
Pressure Detection Port
Port Position
Size
Relief Valve
Boom
Arm
P1
P2
G1/4
G1/4
R1
R2
J1B005
P2
P1
P3
J1B006
R1
R2R3
To Next Page
Loading...
Need help?
General
