43
3
.4
POSITIONING THE FRONT MOUNTING
Spread grease on the threaded stem of the ball joint (
C16
pos.
1
), fit the ball joint, along with its
nut (
C16
pos.
2
) and to the operator arm, screwing on to about halfway along the thread. Insert
the pin (
C16
pos.
4
) into the ball joint, without fitting the snap ring.
Fit the fork (
C16b
pos.
1
) to the base of the operator with its pin (
C16b
pos.
2
) and fix in place
with the two snap rings (
C16b
pos.
3
).
Warning
!
• Check the strength of the mounting zone; if necessary, fit a strengthening plate of the correct
size; the strengthening plate is especially important with gate leaves made from thin sheet
steel.
• When cleaning the mounting zone for the operator front mounting, remove the operator and
protect it from flying sparks.
Rest a water level (
C18
pos.
1
) on the operator body (
C18
pos.
2
) and level the operator.
Weld the front mounting of the rod to the gate leaf with two weld-points, protecting the rod from
weld residues with a clean cloth (
C19
pos.
4
).
Withdraw the jointed head of the operator from the front mounting; completely remove the
operator itself from its temporary mountings, close OFF the flange with the correct plug; complete
the welding, covering the pin - using a clean cloth or adhesive tape (
C19b
pos.
5
) - to protect it
from weld residue, and then clean OFF the residue with a wire brush (
C19b
pos.
6
).
Warning
!
• While welding the points on the front mounting with the electrode, always cover the rod
with a clean cloth; a splinter of molten metal can cause irreparable damage to the machined
surface and make the operator unusable.
• During welding, the operator must be disconnected from the electricity supply.
After cooling, apply a coat of rustproof paint to the welded zone.
3.5 FINAL INSTALLATION OF THE OPERATOR
3.5.1 Mechanical fixing
Fix both ends of the operator to the respective mountings.
Front fixing
Spread graphitized-type grease on to the frontal anchorage pin of the ball joint.
Spread graphitized-type grease on to the ball joint.
Fit the jointed head to the pin and fix in place with the snap ring.
Rear fixing
Fix the operator to the rear mounting using the fork pin (
C20
pos.
3
) and the relevant lock nut
(
C20
pos.
4
).
With the gate leaf fully closed, re-check that the rod comes out from the operator of the defined
measure.
G
B
300 mm
C19
C16
C16b
C18
C20
C17
C19b
Summary of Contents for AA10882
Page 74: ...74...