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3.4
Examine the shaft.
3.4.1
Earlier clamps have a smooth shaft and are fitted with locking and adjusting
grubscrews. Loctite is used on these screws
3.4.2
Later clamps have a groove machined in the shaft and are fitted with a single, longer,
adjusting grubscrew, retained by a locking thread insert.
NOTE:
For further information, refer to
4
Adjust an earlier clamp as follows:
4.1
Replace the clamp knob
4.2
Using a 2 mm hexagonal wrench, remove the locking grubscrew
4.3
Using a 2 mm hexagonal wrench, slacken the adjusting grubscrew
under its own weight.
4.4
With the knob still in Position 2, slide the leg in and out and gradually tighten the adjusting
grubscrew
(4)
until the clamp begins to grip.
4.5
Back off the adjusting grubscrew
4.6
Turn the clamp knob
4.7
Replace and tighten the locking grubscrew (6), using Loctite 221 and allow 15 minutes for the
Loctite to set.
4.8
Secure the clamp knob
5
Adjust a later clamp as follows:
5.1
Replace the clamp knob
5.2
Using a 2 mm hexagonal wrench, slacken the grubscrew
its own weight.
5.3
With the knob still in Position 2, slide the leg in and out and gradually tighten the grubscrew
until the clamp begins to grip.
5.4
Back off the grubscrew
5.5
Secure the clamp knob
"Identifying modified bottom clamps" on page
(7)
and rotate to position 2.
(4)
by a quarter-turn (90°).
(7)
to Position 1 (fully 'on').
(7)
with the washer
(8)
(7)
and rotate to position 2.
(11)
by a quarter-turn (90°).
(7)
with the washer
(8)
First
Page
(6)
from the shaft (5).
(4)
until the leg is free to move
and retaining screw (9). Refit the knob cap (10).
(11)
until the leg is free to move under
and retaining screw (9). Refit the knob cap (10).
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(11)
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