Test 011: Testing Swing Brake Pressure - jcb JS300 Service Manual

1 Fit pressure test gauge 0 - 60 bar (1000 lb in
hose connection on hose A on the Swing motor.
2 Warm up hydraulic system to 50 °C.
K Table 20. ( T E-264)
3
Table 20.
With engine at max rpm's
no services selected
record pressure
Select Swing service
record pressure
De-select Swing service
record pressure
Select 100% Swing lock
record pressure
E-264

Test 011: Testing Swing Brake Pressure

2 ) into
Pressure at port A
(expected pressure)
0 bar
40 bar (580 lb in 2 )
40 bar for 5 secs then 0 bar
after 5 secs 0 - 1.5 bar
2
(21.75lb in )
Hydraulic System Fault Finding
Test 011: Testing Swing Brake Pressure
A405810-C1
Fig 13.
9813/5100-1
Section E - Hydraulics
A
E-264