HF PU35, Owner'S Manual

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8
Problem 2: The cylinder will not move, and the power unit display reads “RELIEF VALVE
SETTING PRESSURE.”
Explanation 2.1: The directional control valve is being stoked in the wrong direction.
Solution 2.1:
Stoke the valve the other way.
Explanation 2.2: Quick-disconnect couplings are not buckled correctly.
Solution 2.2: Check all quick-disconnects for correct assembly.
Explanation 2.3:
The strand yoke may be jammed due to a foreign object.
Solution 2.3: Release hydraulic pressure before attempting to release or remove the obstruction.
Problem 3: The cylinder moves with a non-uniform motion.
Explanation 3.1
: The reservoir is low on oil.
Solution 3.1: Fill the reservoir at least two-thirds full.
Explanation 3.2: The cylinder seals are damaged.
Solution 3.2:
Replace or repair the cylinder.
Explanation 3.3: The hoses are not connected properly.
Solution 3.3: Check the quick-disconnects to make sure they are seated properly.
Explanation 3.4:
Air is trapped in cylinders or hoses after maintenance.
Solution 3.4: Thoroughly bleed air from cylinders and lines by briefly cycling the cylinder in and out.
6.4 Spare Parts List
We recommend that you keep the following parts on hand at the job site.
DESCRIPTION QUANTITY
Piston seal kit for cylinders 1
Rod seal kit for cylinders 1
Initial tensioning relief valve 1
Final tensioning relief valve 1
Pressure transducer 1
Digital display unit 1
Dexron III ATF (hydraulic fluid) 20 gallons
Quick-disconnect 2
Jacking sleeve adaptor JS-175 (see Illustration 1, item 3) 1
INFORMATION
For more information and replacement parts for this unit, contact us at hamiltonform.com or
(817) 590-2111
. Reference the power unit serial number on the front of this manual.