3 - 5
Automatic 2-Speed Switching (cont’d)
Automatic Switching - High Speed/Low Speed
During normal ‘high speed’ operation the pressure at port
A
or
B
is less than 98 bar (1422 lbf/in
2
, 100 kgf/cm
2
). As
machine load increases, so does the pressure at port
A
or
B
.
When the pressure reaches 235 bar (3414 lbf/in
2
, 240
kgf/cm
2
) this overcomes the pilot pressure at port
D
forcing
spool
186
upwards to produce the condition described
under
Low Speed Operation
. When the pressure at
A
or
B
falls below 235 bar (3414 lbf/in
2
, 240 kgf/cm
2
) spool
186
is
forced downwards to reproduce the conditions described
under
High Speed Operation
.
Section F
Transmission
9803/6410
Section F
3 - 5
Issue 1
Operation
JS01690
Summary of Contents for JS130
Page 65: ...Section 3 Section 3 9803 6410 Issue 1 9 1 9 1 Routine Maintenance Component Location Diagram...
Page 118: ......
Page 119: ...3 1 Section C Electrics 9803 6410 Section C 3 1 Issue 1 Layout Operator s Cab...
Page 142: ...5 3 Section C Electrics 9803 6410 Section C 5 3 Issue 1 Pump Control FLOW CHART...
Page 207: ......
Page 209: ......
Page 210: ...3 4 Section E Hydraulics 9803 6410 Section E 3 4 Issue 2 Schematics Shuttle Block...
Page 532: ...Contents Page No Technical Data 1 1 i Engine 9803 6410 i Issue 1 Section K Section K...