![background image](http://html1.mh-extra.com/html/chief/ez-liner-s21m/ez-liner-s21m_user-manual_2600356014.webp)
R
CHIEF EZ LINER S21M
USERS MANUAL
TROUBLESHOOTING
PROBLEM
CAUSE
POSSIBLE SOLUTION
Pump Will Not:
12
Run
Build pressure or
builds pressure slowly.
Hold pressure
Operate efficiently
under pressure
Ram Will:
Jump
Not Extend
Not Retract
Hydraulic Oil Leakage:
Bad square D switch.
Bad motor starting relay.
Power cord disconnected.
Poor electrical connector.
No power to motor.
Circuit breaker tripped or blown fuse.
Broken wires in control cord.
Bad motor.
Bad power cord and/or switch.
Hydraulic fluid is low.
Bad pin and piston kit or bad low
pressure spring.
Quick Coupler at shut off valve is
loose.
Release valve open all the time.
Contamination in valve.
Valve bleeding pressure.
Hydraulic oil leak.
Faulty check valves.
Extension cord is too long or wire
gauge is too small.
IMPORTANT: Extension cord
usage is not recommended. If
used, extension cords must
meet standards (listed at right)
and be used on a short term
basis only.
Facility wiring is inadequate.
Air in hydraulic system.
Valve not open.
Loose quick coupler.
Pump will not build pressure.
Loose quick coupler.
Dirt in quick coupler.
Ram piston is bent.
Hose leaking.
Loose quick coupler.
Loose fitting.
Inadequate sealant in pipe
threads.
Overfilled pump reservoir.
Replace square D switch. Contact Chief Automotive
Systems Service Representative.
Replace motor starting relay. Contact Chief
Automotive Systems Service Representative.
Plug in power cord.
Replace plug or receptacle.
Check circuit.
Reset circuit breaker or replace fuse.
Replace control cord or repair it.
Replace motor/pump assembly.
Replace power cord and/or switch.
Fill fluid reservoir to within 1" (25mm) of top with
SUS215 Viscosity @ 100°F (38C) 10W hydraulic
oil or automatic transmission oil with all rams
down and machine sitting level.
Replace pin and piston kit or low pressure spring.
Contact Chief Automotive Service Representative.
Tighten Quick Coupler.
Contact Chief Automotive Service Representative.
Operate pump and release pressure several times
to flush valve.
Flush valve or replace.
Check hoses, fittings, and quick couplers, and tight-
en or replace.
Replace internal check valves. Contact Chief
Automotive Service Representative.
Use extension cord rated for 25 amps at 120 volts
with ground wire up to 25 feet (7.5m) long, or
use extension cord rated for 16 amps at 220
volts with ground wire up to 25 feet (7.5m) long.
Rewire facility to comply with local electric code.
Add dedicated line with 30 amp breaker.
Bleed air from system. See Machine Maintenance,
Page 10.
Open valve one turn.
Tighten quick coupler.
See Pump Problems above.
Tighten quick coupler.
Disconnect quick coupler and clean male and
female halves.
Replace ram.
Replace hose.
Tighten.
Tighten.
Apply teflon tape to pipe threads after properly
cleaning and retighten.
Drain oil to 2" (50mm) below fill cap.