Manitowoc Published 11-06-15, Control # 040-13 10-47
2250 SERVICE/MAINTENANCE MANUAL TROUBLESHOOTING
Test 13 — Checking Voltage at the Control Handle
Use the following test points to determine the correct
voltages at control handle:
• Engine must be off and power on, with all brakes and
locks engaged.
• Enable the test control handle and measure the voltage
with a digital multi-meter.
• The positive lead must be placed on the test terminal
and the negative lead on a grounded crane component
or on terminal “R”.
• Voltages outside the normal range may indicate a
problem with the control handle, electrical circuit, or
electrical components.
Item Description Item Description
1 Load drum handle 4 Test terminals
2 Boom/swing handle 5 Ground terminal “R”
3 Crawler handle
Hand
Controller
Test
Terminal
Wire No.
Acceptable
Voltage (DC)
Hand
Controller
Test
Terminal
Wire No.
Acceptable
Voltage (DC)
Swing
Left
Right
Center
3
4
87FA
0
85P
8S Brake
89B2 Brake
10
Ground
1.4 to 8.6
12
12
Left Travel
Left
Right
Center
87FA
0
84P
10
Ground
1.4 to 8.6
Boom Hoist
Left
Right
Center
1
2
87FA
0
82P
8A
82N
10
Ground
1.4 to 8.6
Ground
12
Front or
Right Rear
Load Drum
Left
Right
Center
1
2
87FA
0
80P
0
80N
10
Ground
1.4 to 8.6
Ground
12
Right Travel
Left
Right
Center
3
4
87FA
0
83P
8D
89X
10
Ground
1.4 to 8.6
12
12
Rear or Left
Rear Load
Drum
Left
Right
Center
3
4
87FA
0
83P
0
81N
10
Ground
1.4 to 8.6
Ground
12