Azbil HLS Series User Manual

4-34
Disassembling spring unit
<disassembly procedure>
The disassembly procedure of spring unit is described herein.
See Figure 4-28 for reference on part names.
Disassembly is not required if only the piston's sealing parts (tape liner, O-ring) are to
be replaced.
1. Removing spring unit
Step Procedure
1 Loosen hex nuts No.10 (four at the top) and remove.
2 Remove stopper retainer No.11.
3 Evenly loosen hex nuts No.10 (four at the bottom) until there is no tension on
springs No.7 and No.8.
CAUTION
Follow the disassembly procedure of spring unit when removing bolts
and nuts. Otherwise, the release of the springs may result in physical
injury.
4 Remove spring receiver No.9.
5 Remove springs (large No.8, small No.7).
2. Removing piston unit
Step Procedure
1 Loosen stopper No.6 and remove.
2 Loosen locking nut No.5 and remove, using the flat faces of rod No.1.
3 Remove spring washer No.4, O-ring No.2.
Exercise care so as not to damage the O-ring with the rod sc.
4 Separate rod No.1 from piston No.3.

Azbil HLS Series Specifications

General

Brand	Azbil
Model	HLS Series
Category	Control Unit
Language	English