jcb JS160 User Manual

30 - 1
Introduction
The control valve is located on the mainframe to the rear of the boom mounting. Its function is to direct pressurised oil by
means of the operator’s controls to the rams and motors which supply power for the machine’s operation.
The valve is designed to perform the following functions:
a Controlling oil flow direction.
b Operating the hydraulic system smoothly, accurately and safely.
c Maintaining the hydraulic circuit pressure within specified ranges.
Integrated control valves operate a tandem circuit to provide maximum pressure when simultaneous operations are required.
Check valves are incorporated to provide load hold functions.
Identification of spool functions, as marked on the valve body, is as follows:
TL = Left hand track motor
TR = Right hand track motor
AM = Dipper ram
OPT = Auxiliary supply to attachment (if fitted)
SW = Slew motor supply
BKT = Bucket ram
BM = Boom rams
Technical Data
Rated flow 120 l/min (26.4 gal/min)
Maximum pressure for normal use 350 kgf/cm
2
(4978 lbf/in
2
)
Oil temperature range - 20 ~ 90 °C (-4.4 ~ 194 °F)
Maximum oil temperature 100 °C (212 °F)
Pilot maximum allowable pressure 40 kgf/cm
2
(569 lbf/in
2
)
Pilot operation pressure 2.8 ~ 24 kgf/cm
2
(40 ~ 341 lbf/in
2
)
Spool stroke 8 mm (0.315 in)
Control method Hydraulic pilot operation
Main relief valve 2-step pressure switching type relief valve
Standard pressure setting 320 kgf/cm
2
(4550 lbf/in
2
) @ 91 l/min (20.02 gal/min)
Maximum pressure setting 350 kgf/cm
2
(4977 lbf/in
2
) @ 83 l/min (18.26 gal/min)
Overload relief valve Pilot operated type relief valve plus make-up valve
Standard pressure setting (boom raise, dipper, bucket) 365 kgf/cm
2
(5190 lbf/in
2
) @ 30 l/min (6.6 gal/min)
Maximum pressure setting (boom lower) 300 kgf/cm
2
(4266 lbf/in
2
) @ 30 l/min (6.6 gal/min)
Spool Solid type
Weight 104 kg (229.3 lb)
Function Travel priority, slew priority, boom/dipper with load holding,
bucket, auxiliary
Section E Hydraulics
9803/6410
Section E
30 - 1
Issue 1
Control Valve

jcb JS160 Specifications

General

Brand	jcb
Model	JS160
Category	Excavators
Language	English