Helac L20 Series User Manual

22
Parker Hannifin Corporation
Helac/Cylinder Division
Enumclaw, Washington USA
www.helac.com
Helical, Hydraulic Rotary Actuators
L20 Series Service & Repair Manual
Catalog HY34-1120
Greasing Thrust Washers
1. After the actuator is assembled but before
it is put into service, the thrust washer
area must be packed with Lithium grease.
There are two grease ports located on
both the shaft ange and the end cap.
They are plugged with cap screws (113)
or set screws. Remove the grease port
screws from the shaft ange and end cap.
(See exploded view on page 9)
If a hydraulic test bench is not
available, the actuator can
be rotated by hand, open the
pressure ports and use a pry
bar with cap screws inserted
into the shaft ange to turn the
shaft in the desired direction.
Insert the tip of a grease gun into one
port and apply grease to the shaft ange.
Continue applying until grease ows from
the opposite port. Cycle the actuator ve
times and apply grease again. Repeat this
process on the end cap. Insert the cap
screws into the grease ports and tighten
to 25 in-lbs. (2.8 Nm).
Greasing Thrust Washers

Helac L20 Series Specifications

General

Brand	Helac
Model	L20 Series
Category	Controller
Language	English