jcb 1CX, Service Manual

Page: 116 / 242

Section E Hydraulics
9803/8550
Section E
Technical Data 1 - 2
Up to machine number 752462
Relief Valve Operating Pressures
Main Relief Valve (M.R.V.) at 1500 rev/min
Auxiliary Relief Valves (A.R.V.)
Loader
Shovel Crowd
Shovel Dump
Lift Ram Raise
Excavator
Slew Rams
Boom Raise
Boom Lower
Dipper In
Dipper Out
Bucket Crowd
Bucket Dump
Auxiliary Spool (optional) - both ports (see note)
Optional Hand Tool Circuit
Pressure Reducing Solenoid Valve
Maximum Inlet Pressure
Regulated Pressure
Minimum Rated Flow
Maximum Leakage
Oil Temperature Range
Solenoid Valve (including Diodes)
Reducing Valve
Electrics
Filter
Type
Suction Strainer
Rams
Lift (60 x 30)
Shovel (60 x 30)
Boom (70 x 40)
Dipper (70 x 40)
Bucket (70 x 40) (Long and Short Dipper)
Stabiliser (60 x 30)
Ram Torque Settings
Piston Head
Lift Rams
Shovel Rams (Crowd)
Boom Ram
Stabiliser Rams
Dipper Ram
Bucket Ram
End Cap
Lift Rams
Shovel Rams
Boom Ram
Stabiliser Rams
Dipper Ram
Bucket Ram
bar kgf/cm
2
lbf/in
2
207 211 3006
235 240 3410
100-103 102-105 1450-1494
235 240 3410
241 246 3500
241 246 3500
241 246 3500
241 246 3500
241 246 3500
241 246 3500
241 246 3500
241 246 3500
138 141 2001
207 Bar (3006 lbf/in
2
, 211 kgf/cm
2
)
24 Bar (348 lbf/in
2
, 24.47 kgf/cm
2
)
10 l/min (2.2 UK gal/min, 2.64 US gal/min)
25 cc/min (1.52 in
3
/min) at 210 Bar (3045 lbf/in
2
) and 10 cSt
- 40 °C to +106 °C
3 Position, 3 Port Cartridge Valve
Cartridge Type
12 Volt
High Pressure Spin On - 5 micron
125 micron
Bore Rod Dia Stroke
mm in mm in mm in
60 2.36 30 1.18 500 19.69
60 2.36 30 1.18 500 19.69
70 2.75 40 1.57 600 23.62
70 2.75 40 1.57 500 19.69
70 2.75 40 1.57 400 15.75
60 2.36 30 1.18 500 19.69
Nm lbf ft Kgf m
300 222 30.7
300 222 30.7
405 300 41.5
300 222 30.7
405 300 41.5
405 300 41.5
450 332 45.9
450 332 45.9
678 500 69.2
450 332 45.9
678 500 69.2
678 500 69.2
1 - 2
Issue 8*
Note: The return line auxiliary A.R.V. should be set to zero when a Rockbreaker is fitted (Refer to Technical Information 1/011).
The A.R.V. must be returned to the correct setting when the Rockbreaker is removed.
*
www.WorkshopManuals.co.uk
Purchased from www.WorkshopManuals.co.uk