Service Manual Owner manual

Hydraulic System
8.18
Model 6036 Legacy
8.8.3 Boom Retract Circuit and Troubleshooting
(Refer to Section 8.8.20, “Boom Extend/Retract Circuit Description” for a more detailed explanation of this circuit.)
Figure 8-6 Boom Retract Hydraulic Circuit
EXTEND/
RETRACT
CYLINDER
HYDRAULIC
OIL COOLER
SECONDARY FUNCTION
MANIFOLD
UNLOADER
VALVE
DIFFERENTIAL
PRESSURE
SENSE VALVE
RELIEF
VALVE
PUMP
HYDRAULIC RESERVOIR
PPG
PP
T
PBG
P
PS
PSG
PB
VG
SFV
V
P
T
LS
LSG
E
R
PRESSURE
REDUCING
VALVE
IN
T
T
ATTACH
TILT
LS
FRAME
EXT/RET
LFT/LW
AUX
Suction
Return
Load Sense
Pressure
RETURN
FILTER
MA6550