Reference
Only
TROUBLESHOOTING
999 SERVICE/MAINTENANCE MANUAL
10-44
Published 05-16-17, Control # 233-03
Test 12 – Checking Voltage at the Hydraulic Valve Assemblies
To determine if a hydraulic solenoid is enabled, place a
screwdriver on the solenoid coil. The solenoid is enabled if
screwdriver is magnetically pulled toward the solenoid coil.
Measure system voltage at various locations with a standard
test adapter (can be ordered from the Manitowoc Crane
Care Lattice Team) and a digital multi-meter.
To test a hydraulic valve:
•
Set digital multi-meter for testing volts DC.
•
Connect white (positive) and black (negative) wires from
adapter cable to digital multi-meter jacks.
•
Install test adapter between solenoid valve electrical
socket and DIN plug.
•
Enable valve under test.
•
Check for 12 volts DC at upper valve assembly.
Item
Description
Item
Description
1
Counterweight Pin Solenoid Valve
8
Front Drum Pawl Solenoid Valve
2
Boom Hoist Pawl Solenoid Valve
9
Mast Arms Bypass Valve
3
Swing Lock Solenoid Valve
10
Mast Assist Cylinders Solenoid Valve
4
Swing Brake Solenoid Valve
11
Gantry Cylinders Solenoid Valve
5
Two-Speed Travel Solenoid Valve
12
Boom Hinge Pins Solenoid Valve
6
Travel Brake Solenoid Valve
13
Hydraulic/Brake Valve Adapter Cable
7
Rear Drum Pawl Solenoid Valve
12
P1493
P1596
11
10
9
8
7
6
5
4
1
2
3
13
In Right Side Enclosure
Содержание 999
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