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16. Disassembly and reassembly of the arm
[Tools required]
• Hex. bar wrench (4 mm)
• Pliers
• Round bar about 15 mm in diameter
• Round bar about 17 mm in diameter
(1) Disassembly
• Remove the Retaining Ring
[52]
by using pliers.
• Push a round bar about 15 mm in diameter towards the Spindle
[84]
from the Arm Plate
[67]
side to
remove a set of the Spindle
[84]
, two Ball Bearings 6203DD
[53]
, and BB Collar
[54]
from the Arm
[63]
.
• Remove the two Ball Bearings 6203DD
[53]
and BB Collar
[54]
from the Spindle
[84]
.
• Remove the Felt
[55]
from the Arm
[63]
.
• Loosen the Bolt M5 x 12
[62]
by using a hex. bar wrench (4 mm), and remove the Stopper Holder
[64]
and Stopper Rubber
[65]
.
• Loosen the four Bolts M5 x 12
[68]
by using a hex. bar wrench (4 mm), and remove the Arm Plate
[67]
and the four Collars
[66]
.
(2) Reassembly
Reassembly can be conducted by reversing the disassembly procedure. However, special attention
should be given to the following items.
• Do not reuse the removed Ball Bearings 6203DD
[53]
(2 pcs.).
• Mount the Felt
[55]
, Ball Bearing 6203DD
[53]
(felt side), BB Collar
[54]
, Ball Bearing 6203DD
[53]
(retaining ring side), Spindle
[84]
, and Retaining Ring
[52]
to the Arm
[63]
in this order.
NOTE:
• Push the outer ring of Ball Bearing 6203DD [53] to press-fit it into place.
• When press-fitting the Ball Bearing 6203DD [53] (retaining ring side), insert a round bar
about 17 mm in diameter into the BB Collar [54] and Ball Bearing 6203DD [53] (felt side) to
prevent the BB Collar [54] from becoming misaligned.
• When press-fitting the Ball Bearing 6203DD [53] (retaining ring side), immediately stop
press-fitting when the ball bearing contacts the BB Collar [54]. Note that excessive
press-fitting will apply shearing force to the inner and outer rings of the ball bearing.
• Hold the inner ring of the Ball Bearing 6203DD [53] (retaining ring side) when press-fitting
the Spindle [84].
• Firmly fit the Retaining Ring
[52]
into the ring groove of the Arm
[63]
.
• Arm
[84]
[65]
[64]
[63]
[55]
[53]
[54]
[53]
[52]
[62]
[67]
[68]
[66]
[58]