RS5/6-34 Telescopic Handler
HYDRAULICS
PRINTED IN U.S.A.
601-29
913241/BP0508
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Template Name: OML_2_col
0-00000
Template Date: 1994_04_22
EXTENSION CYLINDER COUNTER
BALANCE VALVE DIRECT TEST AND
ADJUSTMENT
STEP 56
G0805114
Shut off the engine. Remove the pressure gauge
from the MP test port. Remove the hose (1) from the
retract bulkhead fitting (2). Install a 5000 psi (345
bar) pressure gauge (3) between the hose (1) and
bulkhead fitting (2).
STEP 57
G0805192
Start the engine and run at 1000 RPM. Extend the
boom approximately 6 feet (2 meters). Watch the
pressure gauge as the boom is slowly retracted. The
gauge should read 1500 psi (103 bar) as the boom is
retracted.
If the gauge is not at 1500 psi (103 bar), proceed to
the next step.
STEP 58
G0805112
G0805113
Shut off the engine. Remove the cover from the
counter balance valve.
NOTE:
The cover is friction fit and can be loosened
by twisting the cover on the valve cartridge.
Loosen the locknut (1) and turn the adjusting screw
(2) counterclockwise to increase and clockwise to
decrease the load check release pressure.
NOTE:
One turn of the adjusting screw will change
the pressure approximately 500 psi (35 bar).
Hold the adjusting screw from turning and tighten the
locknut. Repeat Steps 5 and 7 until the pressure
gauge reads 1500 psi (103 bar).
If the adjusting screw does not change the pressure,
replace the counter balance valve cartridge.
1
3
2
1
2
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