28
Fig 9.11
Carefully turn the chuck body to face upwards. This will
allow the scroll gear to drop from the chuck body. Ensure
it is caught to prevent any damage, Fig 9.11.
Remove all 4 jaw slides as shown in Fig 9.12 by
carefully pulling them away from the chuck body.
Once the chuck is fully disassembled, remove all grease,
dust and debris from the components.
Apply a generous amount of fresh standard multi-
purpose grease to the scroll gear and pinions before
re-assembling the chuck.
Re-Assembling the SC4
Important: When re-fitting the jaw slides, do
so in numerical ascending order in an anti-
clockwise direction.
Refit the jaw slides. They must be re-fitted in an anti-
clockwise direction in order for the scroll gear to register
correctly with the jaw slides. The slides do not have a
corresponding socket on the chuck body, so any socket
can be used to start from.
Before re-fitting the scroll gear, ensure the jaws are
symmetrically positioned as far inwards as possible as
shown in Fig 9.13.
With the chuck positioned face down, place the scroll
gear back into the chuck body and twist from side to side
until it drops into position, Fig 9.14.
Place the pinions back in position through the holes in
the side of the chuck body.
Fig 9.12
9. Maintenance
Fig 9.13
Fig 9.14
SC3 & SC4 Manual 3.7.indd 28SC3 & SC4 Manual 3.7.indd 28 22/04/2022 13:06:1322/04/2022 13:06:13
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