Multiquip LS-300P - Manual (Page 79)

MAYCO LS300P CONCRETE PUMP • OPERATION MANUAL — REV. #0 (06/09/14) — PAGE 79
TROUBLESHOOTING (ELECTRICAL)
Troubleshooting (Electrical - Continued)
Malfunction Reading (Screen 1) Possible Problem Solution
Fuel solenoid open
Burnt 12-volt solenoid. Replace burnt solenoid.
Wire connection broken. Replace broken wire.
Fuel solenoid shorted
The 12-volt solenoid is shorted directly
to ground.
Replace shorted solenoid.
Wire connection is shorted directly to the
ground.
Correct connection.
Coolant temperature Engine over heating. Refer to Engine Troubleshooting.
Proximity switch A
Switch not energizing.
Check for contact clearance. Should be between
0.050 in. (1.27mm) and 0.065 in. (1.651 mm)
Defective proximity switch. Replace switch.
Wire connection broken. Replace broken wire.
Wire connection is directly shorted to
ground.
Correct connection.
Proximity switch B
Switch not energizing. Improper contact clearance.
Defective proximity switch. Replace switch.
Wire connection broken. Replace broken wire.
Wire connection is directly shorted to
ground.
Correct connection.
Alternator Failure
Defective alternator. Replace alternator. Check V-belt
Engine blower cooling fan V-belt is
broken requiring replacement.
Replace V-belt.