Lifting Arms
387
6.
Slowly move the lever on the gripper section of the arm valve (see Figure 10
5) and read the
pressure on the pressure gauge at the time the gripper starts closing.
The closing movement must begin when the pressure reaches 550 PSI.
7.
If the pressure is below or over that value when the gripper starts closing, adjust the holding valve
pressure accordingly using the adjustable cartridge (see Figure 10
10).
N
OTE
:
Turn the screw counter-clockwise to increase pressure or clockwise to reduce pressure.
Adjusting Arm In/Out Holding Valve Pressure
N
OTE
:
The following procedure applies only to E
XPERT
™ units equipped with 2 H
ELPING
-H
AND
™
arms.
On a 2-H
ELPING
-H
AND
™ arm equipped E
XPERT
™ unit, there are 2 holding valves, one for each
automated arm. These valves (see Figure 10
12) are used to prevent one arm from extending
suddenly while the other is being used. An adjustable cartridge is assembled on each holding valve
and can be used to adjust the valve pressure.
N
OTE
:
The following procedure can be used to adjust the pressure of both holding valves.
Figure 10
-
12 Arm in/out holding valve
To adjust the arm in/out holding valve pressure:
1.
Apply all safety measures to ensure safety around the vehicle at all times.
2.
Make sure that the parking brake is applied.
3.
Locate one of the arm in/out holding valves (see Figure 10
12).
Holding valve
Adjustable
cartridge
Summary of Contents for EXPERT
Page 1: ...EXPERT TM MAINTENANCE MANUAL...
Page 2: ......
Page 3: ...EXPERT MAINTENANCE MANUAL...
Page 10: ...viii Table of Contents...
Page 18: ...8 Introduction...
Page 244: ...234 General Maintenance...
Page 251: ...Lubrication 241 Figure 4 11 Glass compartment lubrication chart optional...
Page 252: ...242 Lubrication Figure 4 12 EXPERT lubrication chart...
Page 264: ...254 Lubrication...
Page 320: ...310 Hydraulic System...
Page 357: ...Troubleshooting 349...
Page 358: ...350 Troubleshooting...
Page 386: ...378 Multiplexing...