MULTIQUIP MAYCO LS600 Operation And Parts Manual page 63

Problem
Shuttle Cylinder does not stroke
Shuttle Cylinder slow to complete
stroke
Pump Engine will idle but not increase
to full operating speed
Battery voltage falls below 12VDC on
digital display, causing engine not to
start
MAYCO LS600 PUMP — OPERATION AND PARTS MANUAL — REV. #4 (9/15/11) — PAGE 63
LS600 PUMP
TABLE 9. PUMP TROUBLESHOOTING (CONTINUED)
Possible Problem
Incorrect Accumulator System
Pressure
Contaminated Relief Valve
Swing Solenoid not energizing
Swing Valve not functioning properly
Improper Flow Control setting
Incorrect Engine RPM setting
Incorrect Main Hydraulic System
Operating Pressure
Contaminated Swing Relief Cartridge
Low Accumulator System Pressure
Hopper Discharge Nipple Seal
improperly lubricated
Misaligned hopper creating excessive
friction on the outlet nipple bearing
sleeve
Lack of lubrication
Throttle Control Block Solenoid not
energizing
Blown out Fuse
Dead battery
Wiring connection inside Control Box
— TROUBLESHOOTING (PUMP)
Check the system pressure reading.
Verify it is approx. 1750 PSI
Check the manifold for a
contaminated Relief Valve
Check for burned out solenoid and
12V signal voltage
Manually cycle the pump using the
manual cylinder jogging switch
Fully open Flow Control Valve
Verify the engine's high RPM speed is
set to 2550
Check the pump pressure gauge.
Verify it is approx. 4400 PSI
Check the manifold for contaminated
Swing Relief Cartridge
Check the accumulator pressure
reading. Verify it is approx. 1750 PSI
Check the Hopper Discharge Nipple
Seal for seizing and lack of lubricant
Realign hopper ensuring S-tube is
rotating in the center of the hopper
outlet.
Grease Nun Plate Bushing
Check for burned out solenoid and
12V signal voltage
Check the fuse
Check the charge on the battery
Check the wiring connections and
verify power is reaching ignition
switch
To Troubleshoot