PowerTilt Tilting Coupler
PowerTilt Series Service & Repair Manual
HY34-1410
15
Parker Hannifin Corporation
Helac/Cylinder Division
Enumclaw, Washington USA
www.parker.com/helac
Measuring PowerTilt Side to
Side Movement
The table below shows the tolerances allowed
for total side to side movement, which includes
actual gear backlash, hydraulic seal movement /
compression, and oil compression. No endplay.
These measurements represent 1.5° of backlash.
Measurements should be taken with the bucket
in the air and with the machine shut off and
pressure relieved. With a wide bucket installed,
a person can stand on one corner of the bucket,
make matching marks on the shaft and housing
per the illustration below, then stand on the other
corner of the bucket and make a second mark on
the housing and take a measurement between
the marks on the housing. This method is not
exact but can be useful to help determine where
movement is coming from. Air in the system or
shaft endplay (see next section) can contribute
to the perceived backlash and should be watched
for.
Maximum Backlash Measured at Outside
Diameter of Shaft for a New PowerTilt
Model
Measurement
PT-6
2.0 mm
PT-7
2.4 mm
PT-8
2.7 mm
PT-9
3.1 mm
PT-10
3.5 mm
PT-11
3.8 mm
PT-12
4.1 mm
3.
The end cap with the threaded holes is now
visible under the lock ring.
4.
Now mount the re-adjustment tool and
tighten the end cap with the torque wrench by
turning it clockwise or hydraulically by holding
the end cap stationary and pressurizing port
P2 to the values in table on page 41.
NOTICE
Install lock ring before
operating the PowerTilt again.
Neglecting to do so poses the
risk that the shaft might rotate in
relation to the end cap and the
adjusted torque changes, when
the Powertilt is operated.
Installation and Maintenance
Adjusting Endplay
