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Hydraulic Troubleshooting
M30 SERVICE INFORMATION
Scrub/Sweep Head Lower
Engine speed: High
Pressure / Flow Line
Suction Line
Return or Low Pressure Line
Active Pilot Port Line
Inactive Pilot Port Line
Case Drain Line
i
MAIN VALVE MANIFOLD
SV7
P2
T2
Default SCRUBBING
Pressure Readings
# Brush
Pressure at G1
LEDs ON
95 - 143 psi
1
(6.5 – 9.8 bar)
160 – 240 psi
2
(11 – 16.5 bar)
280 – 400 psi
3
(19.3 – 27.5 bar)
OR3
0.140 in
(3.55 mm)
G5
RV2
Default SWEEPING
Pressure Readings
# Brush
Pressure at G1
LEDs ON
6 - 14 psi
1
(0.4 – 1 bar)
38 – 56 psi
2
(2.6 – 3.8 bar)
73 – 109 psi
3
(5 – 7.5 bar)
2500 PSI
(172.4 BAR)
Scrub
Head
Actuator
Gray items are
energized
or activated
ORIFICE
0.040 in
(1.0 mm)
*PWM*
G1
SCRUB HEAD
ACTUATOR
LOWER
C1
SV2
G2
SV3
NOTE
SPRING
ASSIST
H
T1
PC1
i
ENGINE
The “# Brush Pressure LEDs ON”
are the Touch Panel LED indicators
for Brush down pressure
OIL
FILTER
3 PSI
(20.7 kPa)
C2
OIL
COOLER
SCREEN
35 PSI
(2.4 BAR)
M30 9003947 (6--08)
126
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