Multi Pro 5800Hydraulic System Page 5 − 46
Steering/Boom Lift Circuit − Boom Lift Cylinder Internal Leakage Test
A
B
A
B
RH LH
B
A
(UPPER)
(LOWER)
INTERNAL
CHARGE PUMP
C2 C1 C3 C4
S2 S3
S1
GP
BOOM LIFT MANIFOLD
PC1 PC2
LIFT CYLINDER LIFT CYLINDER
OR2
.036”
OR1
.036”
OR3
.036”
OR4
.036”
STEERING CYLINDER
BORE: 1.50”
STROKE: 8.50”
ROD: 0.63”
LR
STEERING
UNIT
PET
SPRAYER PUMP DRIVE MOTOR
4.3 CID
6.0 CID
PV
CV
OR
.040”
80 PSI
LC
2000 PSI
G
PT
PUMP CONTROL
MANIFOLD
50 PSI
RETURN
FILTER
4.3 GPM
12.1 GPM
1015 PSI
.95 CID
.34 CID
.42 CID
4.5 GPM
50 PSI
CHARGE
FILTER
2.48 CID 2.48 CID
11.96:1 11.96:1
4000 PSI
4000 PSI
250 PSI
.032”
TOW
VALVE
.032” .032”
2.48 CID
31.6 GPM
ENGINE
3100 RPM
BREATHER
SUCTION
STRAINER
OIL
COOLER
TRACTION (PISTON) PUMP
GEAR PUMP
WHEEL
MOTORS
P1 P2
FORWARD
REVERSE
RATED SPEED
Figure 35
TEST FOR RH BOOM LIFT CYLINDER SHOWN
BOOM LIFT SWITCH PRESSED TO LOWER
BOOM FULLY LOWERED (CYLINDER EXTENDED)
CYLINDER FULLY
EXTENDED
LOOK FOR
LEAKAGE
STEEL
CAP
RH CYL.