Norton C3120 Owner's Manual page 43

7. For warranty and service information on Monarch Hydraulic pumps, contact
Monarch Hydraulics at:
Phone: 616-458-1306
Web Site: http://www.monarchhyd.com/
The Norton Company does not warranty the Hydraulic Pump. If any
warranty or service of the Hydraulic Pump is required contact your nearest
Monarch Hydraulics service center @ (616) 458-1306, or from the Internet:
http://www.monarchhyd.com/
8. Monarch Hydraulic Pump Symptom /Cause
Symptom
Motor Fails To Start
Load Fails To Hold
Load Drops Slow
Motor Runs But Load Fails To Raise
Motor Runs Slow And Sluggish
Load Fails To Lower
9. Monarch Hydraulic Pump Test Equipment
a. Pressure Group:
A small 0 5000 PSI pressure gauge, preferably glycerin filled, is a
very valuable and relatively inexpensive tool for checking pressure in
the various sections of the circuit.
b. DC Test Light:
A test light is simply a light bulb which has one end connected by a
wire to an alligator clip and the other end connected to a metal probe.
It is used to check the electrical circuit when the battery is connected
to the system. The alligator clip is grounded and the light glows when
Motor Start Solenoid Switch
Electrical Switch "Open" Circuit Motor
Check Valve-Main (Poppet Type)
D.R. Lowering Valve (two-way, Two Position)
Manual Override
D.R. Lowering Valve (two-way, Two Position)
System Filter
D.R. Lowering Valve (two-way, Two Position)
Manual Override
"Ground Fault'
Relief Valve
Suction Filter
Pump Losing Prime (Low Or No Oil In Pump)
Cylinder - Piston Type
Worn Pump
Low Voltage
Motor
Relief Valve
D.R. Lowering Valve (two-way, Two Position)
System Filter
Electrical Switch
"Open" Circuit
43
Cause