CompleteTeardown,Cleaning,andReassemblyoftheOlympusBH‐2SlidingFocusBlock
Revision2 Page15of23
Figure41–Placerollersandrodontobottomguiderails
PlaceFocusBlockAssemblyontoCylindricalRollers
Carefullyplacethefocus blockassembly , withtheguide
blockheld looselyinplaceonthebacksideofthefocus
block, onto the cylindri cal rollers on the guide rails in
thebottomgrooveofthearmcasting(seeFigure42).
Figure42–Placefocusblockassemblyontorollers
Withdrawabouthalfthelengthoftheguideblockfrom
behind the focus block, making sure to not disturb the
positioning of the two brassshims stuck onto the back
side of the focus block or the guide ra ils seated in the
sidegrooveoftheguideblock(seeFigure43
).
Figure43–Withdrawtheguideblockabouthalfway
PlaceCylindricalRollersontotheUpperGuideRails
IFGREASEISTOBEUSEDINTHESLIDINGFOCUSBLOCK(RECOMMENDED):
Lightly coat four of the cylindrical rollers and the
remaining plastic spacer rod with a suitable grease
(item 5 or 7 of Appendix 2).Place these four greased
cylindrical rollers onto the greased guide rails in the
grooveontopof theguideblock,wheretheguideblock
is protruding
from the bottom of the arm casting (see
Figure44,shownwithoutgreaseforclarity).Orientthe
rollersasshowninthephotoinset.
IFGREASEISNOTTOBEUSEDINTHESLIDINGFOCUSBLOCK:
Place four of the cylindric al rollers onto the guide rails
inthegrooveontopoftheguideblock,wheretheguide
blockisprotruding fromthe bottom of thearm casting
(see Figure 44).Orient the rollers as shown in the
photoinset.
Figure44–Placefourrollersontheupperguiderails
Use the remaining plastic spacer rod to carefully push
the four cylindrical rollers into the channel formed by
the four guide rails (two in the focus block and two in
the arm casting), making sure that the rollers do not
come out of position on the guide rails as they are
pushedintothechannel(seeFigure45).
Figure45–Pushcylindricalrollersintoguide‐railchannel
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