Operating Instructions
Progressive Cavity Pump
Holding Band Re-assembly
Dokument
document
Blatt
sheet
Ausgabe
issue
OM.HBD.01e
1 (2)
A / 23.02.95
Holding Band (HBD) - Assembly
Tools required for the re-assembly, see document
OM.STP.01, Point 9.
•
Prepare holding band
Only prefabricated double-band holding bands
should be used. The diameter (
∅
) and in particular
the breadth (b) of the holding band is matched to the
universal joint sleeve.
•
Test holding band
The bent holding band (HBD) must fit against the
holding band loop (SCL), if necessary apply
pressure with the tool/pliers (WZ).
•
Assembly of holding band
Insert holding band in tool (W3/ see Point 9). Hold
free end of holding band with control lever (EX),
turn crank (KU) until the holding band is strained
and fitting against the holding band loop (SCL).
Carefully contract holding band until it fits inside
the circular groove of the universal joint sleeve.
•
Correct holding band tension (HBD)
Correct
Holding band
(HBD) has
slightly con-
tracted outer
form of univers-
al joint sleeve
and is stuck in
position.
Incorrect
Holding band
(HBD) is too
slack and liable
to slip.
Incorrect
Holding band
(HBD) is too tight.
Universal joint
sleeve will be
damaged/sheared
off.
•
Folding back the holding band (HBD)
Slowly swivel mounting tool upward by 60°, at the
same time slackening the crank (KU) by
approximately one half revolution. Swivel cutting
lever (SH) forward until the pressure plate fits
against the holding band loop (SCL).
•
Shearing off holding band (HBD) made of material
AISI 304 and AISI 316
A blow with the palm of the hand against the
cutting lever (SH) causes the end of the holding
band behind the loop (SCL) to be folded back and
sheared off. If the holding band on the sheared off
side is slightly raised as a result, it must be
straightened carefully.
CAUTION
Never tap or hammer against the loop of the
holding band (SCL), otherwise damage to the
universal joint sleeve may occur.
•
Shearing off holding band (HBD) made of Hastelloy
C
The high strength of this material makes it
impossible to shear off the holding band (HBD)
with the cutting lever (SH). Once the end of the
holding band is folded back, cut off the holding
band (HBD), file off projecting edges and remove
burr.
