Nova Precision Midi User manual
HOW TO SERVICE NOVA CHUCKS
SAFETY WARNING
Safety glasses must be worn when dealing with snap rings on the
chucks. Snap rings can for fly off in any direction. Use caution and
wear safety glasses.
Note: Remove jaws or any other accessories attached on the chucks
before disassembling the chucks. Wipe/blow off visible dust from the
chucks before disassembly.
Preparation:
Before starting the disassembly, lay a disposable thick towel or cloth on top of the
working area as the disassembly process can get messy. The towel will protect the
chuck body during this process.
This guide outlines the disassembly, cleaning and reassembly for:
Precision Midi
G3
SuperNOVA2
Titan
p.1
SuperNova2 – Disassembly
Tools Required:
1. External Circlip Pliers
2. Flat Head Screw Driver
3. Disposable Rag
STEPS DESCRIPTION IMAGE
1.
Place chuck face down. The jaw slides can
be at any position.
2.
Use the external snap ring plier to remove
the retaining ring (as shown in the image).
Continues to next page…
p.12
SuperNova2 – Disassembly
STEPS DESCRIPTION IMAGE
3.
Once retaining ring is removed, the
backing plate can be removed from
chuck body.
Option 1: When removing the
backing plate, use two flat-head
screw drivers to lift it straight out from
the chuck body.
Option 2: Or thread an insert into the
chuck (if chuck is an Insert type – not
direct thread) and use a soft mallet to
give it a sharp impact. This would
release the backing plate from the
chuck body.
NOTE: This step might be tricky as
the backing plate can be stuck onto
the chuck body with old lubricants.
4.
Remove the pinion gears by pushing
them outwards.
This may require a bit of force as dirt
can get caught in the gaps.
5.
Remove the scroll ring from the
chuck body. This should just slide out
but, if stuck, might need a bit of
tapping.
Continues to next page…
p.13
SuperNova2 – Disassembly
continued
STEPS IMAGE
6.
Mark with a permanent marker
before sliding the jaw slides out
since each jaw slide will have a
corresponding slideway to it. #1
jaw slide fits where there is a
dimple.
After removing scroll ring, the jaw
slides will be free to slide out of the
chuck body.
7.
Make sure you have all parts:
1. Chuck Body
2. Pinion Gears
3. Backing plate
4. Scroll Ring
5. Retaining ring (EC48)
6. Jaw Slides #1-4
p.14
SuperNOVA2 – Cleaning
STEPS DESCRIPTION IMAGE
1.
Using a disposable cloth/ towel to
wipe off much of the visible dirt as
possible on each part.
NOTE: Scroll ring will be used as an
example but the procedure should be
carried out on all the main parts of the
chuck (i.e. scroll ring, jaw slides and
chuck body).
2.
To remove built up grime, apply a
degreaser/rust remover (e.g. WD40)
on each part. Leave on for at least two
hours (or as directed on product
instructions).
3.
Use a wired brush to remove the rust
and grime.
Make sure to run the brush in between
the slits of the scroll ring and jaw
slides to get to the hard to clean areas.
4.
Use a clean disposable cloth/ towel to
wipe the part after brushing.
The parts should feel dry and
shouldn’t leave any sticky residue on
your fingers.
p.15
SuperNova2 – Reassembly
STEPS DESCRIPTION IMAGE
1.
Before reassembling the chuck, apply
a generous amount of lubricant to all
surfaces that come in contact with
other parts.
We recommend applying the lubricant
(before assembly) on the inner
surface of the chuck body as well as
the jaw slide slots . Be sure to apply
lubricant on spiral teeth side.
2.
Reinsert the jaw slides back into their
original slots.
NOTE: The jaw slide number should
be counting up from 1~4 in the
clockwise direction (looking from
front)
3.
Flip the chuck on its face and position
the jaw slides to form a square in the
centre as shown.
Continues to next page…
p.16
SuperNova2 – Reassembly
STEPS DESCRIPTION IMAGE
4.
Slide the scroll ring back into the
chuck body. Once in place, rotate the
scroll ring back and forth until it
engages with the jaw slides.
You should feel the scroll rings
engage as it drops into place,
exposing the slot where the snap ring
will fit.
NOTE: Make sure that the jaw slides
do not move before sliding the scroll
ring in.
5.
Apply a generous amount of lubricant
on the geared side of the scroll ring.
6.
Insert pinion gears back into the
chuck body as shown in the image.
Continues to next page…
p.17
SuperNova2 – Reassembly
continued
STEPS DESCRPTION IMAGE
7.
Rotate scroll ring with chuck key to
check that jaw slides correctly match
up at centre.
If the jaw slides match up at centre by
forming a square in the middle, put the
backing cover on.
If the scroll ring is found hard to turn
(not smooth), possible causes are:
1. Pinion gears are binding
2. Not enough lubrication
3. Defective parts
8.
Once the back plate is in place, put the
snap ring back on to finish.
Make sure the snap ring is correctly
installed in its groove.
p.18
Chucks Parts List
SKU Thread
Size PARTS LIST
SKU 48111
Precision Midi
Direct Thread
1” x 8 TPI
1. 48100 Chuck Bod
y
2. 48116 Scroll Rin
g
3.
23051
23052
23053
23054
Jaw Slides
4. EC48 36mm External
Circlip
SKU 48232
G3 Direct Thread 1” x 8 TPI
1. 48206 (Insert)
48207 (Direct) Chuck Body
2. 23082 Scroll Ring
3.
23051
23052
23053
23054
Jaw Slides
4. EC48 External Circlip
SKU 48202
G3 Insert Type M38 x 3.5
SKU 23062
SuperNOVA2
Direct Thread
1 ¼” x 8tpi
1. 23049 (Insert)
23061 (M33) Chuck Body
2. 23048 Back Cover
3. 23082 Scroll Ring
4.
23051
23052
23053
23054
Jaw Slide #1~#4
5. 23081 Pinion Gear
6. EC48 External Circlip
SKU 23055
SuperNOVA2
Insert Type
M38 X3.5
SKU 13060 –
Titan III
Direct Thread
1 ¼” x 8tpi
1. 13038 (Normal)
13039
(
Europe
)
Chuck Body
2. 13003 Back Cove
r
3. 13035 Scroll Rin
g
4.
1339011
1339012
1339013
1339014
Jaw Slide #1~#4
5. 13036 Pinion Gear
6. EC48 External Circlip
7. 13004 Fastening Screw
8. LSM4N Position Screw
SKU 13061 –
Titan III
Europe Version
Direct Thread
M33 x 3.5
p.26
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10
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