TM 5-3805-280-24-1
SWING LEFT
BUCKET
5
SWING RIGHT
3
NOTE: Numbers 1 thru 12 are used on the schematic
6
CURL
only to show the connections for pilot lines from
BUCKET CURL
7
flow regulator to left and right control valve pilot caps.
BUCKET DUMP
Numbers not used on the machine
8
FLOW
DUMP
REGULATOR
1
4
UP
BOOM UP
1
T
TO
HYDRAULIC
OIL TANK
BOOM UP
P
DOWN
PRESSURE
SWITCH
TO RIGHT
PILOT PRESSURE
CONTROL VALVE
BOOM
REGULATING VALVE
2
RIGHT PILOT
FROM
CONTROLLER
HYDRAULIC
PILOT
OIL TANK
SWING
FILTER
BOOM DOWN
2
3
PILOT FILTER
PILOT PUMP
LEFT
TO REAR PUMP
BYPASS VALVE
CONTROL VALVE
IN LEFT CONTROL
VALVE
ARM OUT
3
RIGHT
1
TO FRONT PUMP
TO SWING
4
CONTROL VALVE
IN
PARK BRAKE
TO FRONT
IN RIGHT CONTROL
ARM IN
T
RELEASE
AND REAR PUMP
VALVE
PRESSURE
VALVE
REGULATORS
SENSOR
PROPEL
P
POWER
SPEED
ARM
SPEED
OUT
ARM IN
BOOST
SENSING
REGENERATIVE
CHANGE
4
ARM
VALVE
VALVE
VALVE
VALVE
2
LEFT PILOT
CONTROLLER
SG
SI
SD
SC
PROPEL RIGHT REVERSE
12
PROPEL RIGHT FORWARD
3
11
RIGHT
PROPEL LEFT REVERSE
10
REVERSE
PROPEL LEFT FORWARD
9
T6
VALVE
MANIFOLD
RIGHT
T4
FORWARD
4
PILOT
T5
SHUT-OFF
AUXILIARY PILOT
2
VALVE
CONTROLLER
PILOT OIL
LEFT
P3
REVERSE
T
2
RETURN OR
TO
PRESSURE
P1
HYDRAULIC
FREE OIL
T
P
OIL TANK
LEFT
P2
FROM PROPEL
FROM BUCKET
FORWARD
P
FLOW CONTROL
FLOW CONTROL
VALVE IN LEFT
VALVE IN RIGHT
1
13 TO AUXILIARY SPOOL TOP
1
PROPEL PILOT
T120887
CONTROL VALVE
CONTROL VALVE
PILOT CIRCUIT FOR PILOT CONTROLLERS SCHEMATIC
14 TO AUXILIARY SPOOL BOTTOM
CONTROLLER
Foldout 35 (Foldout 36 blank)
6-87