PRINTED IN U.S.A. 601-8 913241/BP0508
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Template Name: OML_1_col 0-00000
Template Date: 1994_04_22
RS5/6-34 Telescopic Handler HYDRAULICS
ATTACHMENT TILT CYLINDER TROUBLESHOOTING
NOTE: If the tilt cylinder will roll back but not lower or lowers slowly, repair or replace the counter balance valve on
the cylinder.
Does the tilt operate without a load?
Test the pressure at the MP test port on the. Follow the Control and Park Brake Pilot Pres-
flow divider. Retract the boom to the end of the sure Troubleshooting procedure. Is the problem
cylinder stroke and hold. Does the pressure in the controls?
gauge read 3000 psi (207 bar)?
Repair or replace the
control components.
Use an in-line pressure gauge to test the roll
tilt up at the tilt cylinder. Does the pressure
gauge read 3000 psi (207 bar)?
Repair or replace the tilt cylinder. Adjust the tilt pressure relief valve
in the tilt control valve and retest
the tilt up. Does the gauge read
3000 psi (207 bar)?
If the tilt does not work after adjusting Repair or replace the tilt control
the tilt relief valve, repair or replace the valve and/or the tilt relief valve.
tilt cylinder.
Use an in-line flowmeter to test the pressure at
the EF port of the flow divider. Does the
pressure gauge read 3000 psi (207 bar)?
Adjust the relief valve in the Main Control Valve. Remove and bench test the hydraulic pump.
Open the load control valve of the flowmeter and Does the hydraulic pump meet specifications?
hold the joystick in the boom lower position.
Does the gauge read 3000 psi (207 bar)?
Remove the flowmeter. Replace the relief valve in
the Main Control Valve.
Repair or replace the hydraulic pump.
YES
NO
YES
YES
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
Replace the
flow divider
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