Olympus BH2 Series Volledige demontage, reiniging en hermontage - Pagina 20
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bit, until the tip of the tool seats fully into the setscrew
head and drives out any dissolved adhesive. Repeat this
same procedure with the remaining setscrew.
Note: Refer to
Appendix 2
clearing the adhesive from the setscrew heads.
Remove the Setscrews
Once the adhesive securing both setscrews has been
dissolved and removed from the hex openings of the
setscrews, use the 1.5mm Allen tool or driver (tapping it
with a mallet to fully seat, if necessary) to carefully
loosen and remove the two M3X5 hex-head setscrews
(see
Figure
51). Note that if the fit of the 1.5mm driver
seems at all loose in the heads of the setscrews, try
using a 1/16" driver instead of the 1.5mm driver, since
it is slightly larger and will therefore be less prone to
slippage. But do not use the 1/16" tool if there is any
doubt as to whether or not it is fully seating within the
setscrew heads.
Figure 51 – Loosen setscrews holding the pinion assembly
After the two setscrews have been removed, grasp the
black, metal tension-adjustment knob on the right-hand
side of the pillar arm and pull the pinion assembly free
of the bore in the pillar arm casting (see
Figure 52 – Withdraw pinion assembly from the pillar arm
Complete Teardown, Cleaning, and Reassembly of the Olympus BH-2 Coaxial Focus Mechanism
for an alternate method for
Figure
52).
Service the Sliding Focus Block
If the sliding focus block needs to be serviced, now is
the perfect time to do so, since all of the coaxial focus
parts have been removed from the stand. Refer to the
Complete Teardown, Cleaning, and Reassembly of the
Olympus BH-2 Sliding Focus Block
series for complete instructions to perform this service.
Remove the Tension-Adjustment Knob
Unscrew and remove the black, metal tension-
adjustment knob from the brass pinion mount (see
Figure
53). Note that this knob threads onto the brass
pinion mount from the back, with left-handed threads,
so it must be loosened in the counterclockwise
direction, when viewed as shown in
Figure 53 – Unscrew the tension-adjustment knob
Remove the Coarse-Focus Tension Washers
Remove the nylon tension washer from the recess of
the tension-adjustment knob (see
with the tension-adjustment knob loosened).
Figure 54 – Remove the nylon tension washer
Remove the metal wave washer from within the recess
of the tension-adjustment knob (see
document in this
Figure
53.
Figure
54, shown
Figure
55).
Revision 4
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