![background image](http://html1.mh-extra.com/html/chief/ez-liner-s21m/ez-liner-s21m_user-manual_2600356005.webp)
R
CHIEF EZ LINER S21M
USERS MANUAL
Figure 2
Figure 3
To operate hydraulic system:
1. Open valves to the hydraulic ram(s) to be used. Close
valves to all other hydraulic rams. (See Figures 2-4.)
NOTE: To open, turn valve 1/2 turn to left (counter-
clockwise). To close, turn valve to right (clockwise).
DO NOT overtighten. Over-tightening can damage
valve’s needle and seat.
IMPORTANT: When using lift valve, observe
caution label on lift valve cover.
2. Press up button on remote control switch to exert
hydraulic pressure and press down button to
release hydraulic pressure. (See Figure 1 — Page 2.)
NOTE: Hold remote control switch so its cord is in
a downward position. This positioning
reduces stress in this area of the cord.
3. Monitor pressure gauge whenever exerting
hydraulic pressure. S21M readings represent tons
or kilo Newtons (kN).
NOTE:
1) Pressure gauge readings represent amount of
pressure each ram applies to its respective chain
(and vehicle). Each ram in use exerts the same
amount of pressure. The S21M pressure gauge
displays pressure readings intons or kilo Newtons
(kN).
2) Although the S21M is a low pressure system, it
builds hydraulic pressure quickly. Be aware of
this quick reaction when making pulls or lift-
ing the vehicle.
IMPORTANT: Monitor pressure gauge continually
during repair. Even though the S21M is capable of
making strong pulls, most repairs can be made at
low pressure by using multiple pulls and proper
stress relieving of work hardened (folded) metal.
Suggested low pressure for the S21M is one ton
(9 kilo Newtons).
3
C A U T I O N
Do NOT Open This Valve Unless:
1. ALL TOWERS ARE PROPERLY PINNED TO THE
MACHINE.
2. VEHICLE’S WHEELS ARE BLOCKED, AND
EMERGENCY BRAKE IS SET.
!
Figure 4
S21M Lift Valve
(Side View)
S21M
Tower
Valve
(side view)
S21M
Auxiliary
Ram Line
Valve
Pressure Gauge