Multi Pro 1750 Page 9 − 29 Ultra Sonic Boom Kit (Optional)
Boom Lift Control Manifold (Fig. 24)
WARNING
Make sure that spray booms are fully lowered be-
fore loosening hydraulic lines, cartridge valves
or plugs from boom lift control manifold. If
booms are not fully lowered as manifold compo-
nents are loosened, booms may drop unexpect-
edly.
CAUTION
Rotate steering wheel and depress traction ped-
al in both forward and reverse to relieve hydrau-
lic system pressure and to avoid injury from
pressurized hydraulic oil.
For boom lift manifold cartridge valve service proce-
dures, see Cartridge Valve Service in Chapter 4 − Hy-
draulic System in this manual. Refer to Figure 24 for
manifold cartridge valve and plug installation torque.
NOTE: The six (6) solenoid valve coils on the boom lift
control manifold are identical. To assist in troubleshoot-
ing, identical coils can be exchanged. If the problem fol-
lows the exchanged coil, an electrical problem likely
exists with the coil. If the problem remains unchanged,
something other than the solenoid coil is the problem
source (e.g. a hydraulic problem exists).
For solenoid valve coil testing procedures, see Hy-
draulic Solenoid Valve Coils in Chapter 5 − Electrical
System in this manual. Refer to Figure 24 for solenoid
valve coil installation torque.
Figure 25
TOP
PT
G
LC
S3
SH
OR
S4
S2
C2 C1 C3 C4
S5
RIGHT CYLINDER
RETRACT TO RAISE
LEFT CYLINDER
RETRACT TO RAISE
COIL
BOTTOM
COIL
TOP
COIL
BOTTOM
COIL
CONTROL
VALVE
STEERING
FROM
HYDRAULIC
RESERVOIR
FILTER AND
TO OIL
1. Boom lift manifold
2. Solenoid S2
3. Solenoid S3
4. Solenoid S4
5. Solenoid S5
6. Logic cartridge LC
Figure 26
123
45
6
FRONT
Ultra Sonic
Boom (Opt.)
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