Olympus BH-2 BHS, Complete Teardown, Cleaning, And Reassembly

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Complete Teardown, Cleaning, and Reassembly of the Olympus BH ‐ 2 Sliding Focus Block Revision 2 Page 4 of 23
Table of Figures
Figure 1 – Head of a typical JIS screw ..................................................................................................................................... 6
Figure 2 – Protect the top of the arm from dust .................................................................................................................... 7
Figure 3 – Remove the lamphouse from the base .................................................................................................................. 8
Figure 4 – Bottom view of the BHT/BHTU electrical base ...................................................................................................... 8
Figure 5 – Light pre ‐ set control and pre ‐ set switch ................................................................................................................ 8
Figure 6 – Remove screws securing the arm to the base ....................................................................................................... 8
Figure 7 – Separate the arm from the base ............................................................................................................................ 8
Figure 8 – Remove screws securing the trim cover ................................................................................................................ 9
Figure 9 – Remove the loose trim cover from the arm ........................................................................................................... 9
Figure 10 – Loosen screws securing guide block in place ....................................................................................................... 9
Figure 11 – Loosen screws tensioning slide mechanism ........................................................................................................ 9
Figure 12 – Withdraw focus block assembly from the arm .................................................................................................... 9
Figure 13 – Remove screws securing the guide block .......................................................................................................... 10
Figure 14 – Remove the guide block from the focus block ................................................................................................... 10
Figure 15 – The components of the focus block assembly ................................................................................................... 10
Figure 16 – Remove the brass shims from the focus block .................................................................................................. 10
Figure 17 – Remove screws and wedge nuts ........................................................................................................................ 10
Figure 18 – Remove four guide rails from the arm casting ................................................................................................... 10
Figure 19 – Clean grease from the guide rails ...................................................................................................................... 11
Figure 20 – Clean grease from the side grooves in the arm ................................................................................................. 11
Figure 21 – Remove screws securing bottom dust cover ..................................................................................................... 11
Figure 22 – Remove the bottom dust cover ......................................................................................................................... 11
Figure 23 – Remove two guide rails from the focus block .................................................................................................... 11
Figure 24 – Clean grease from side groove in focus block .................................................................................................... 12
Figure 25 – Remove guide rails from the guide block ........................................................................................................... 12
Figure 26 – Clean grease from side groove in guide block ................................................................................................... 12
Figure 27 – Soak the rollers in solvent to remove grease ..................................................................................................... 12
Figure 28 – Reinstall the long guide rails into the arm ......................................................................................................... 12
Figure 29 – Scrub grease from guide rails and arm .............................................................................................................. 12
Figure 30 – Guide rails installed into the arm casting ........................................................................................................... 13
Figure 31 – Reinstall short guide rails into the focus block .................................................................................................. 13
Figure 32 – Scrub grease from guide rails and focus block ................................................................................................... 13
Figure 33 – Guide rails installed into the focus block ........................................................................................................... 13
Figure 34 – Reinstall short guide rails into the guide block .................................................................................................. 13
Figure 35 – Scrub grease from guide rails and guide block .................................................................................................. 13
Figure 36 – Guide rails installed into the guide block ........................................................................................................... 14
Figure 37 – Reinstall the brass shims onto the focus block .................................................................................................. 14
Figure 38 – Clean exposed grease from the focus block ...................................................................................................... 14
Figure 39 – Reinstall guide block onto the focus block ......................................................................................................... 14
Figure 40 – Loosely engage screws with the wedge nuts ..................................................................................................... 14
Figure 41 – Place rollers and rod onto bottom guide rails ................................................................................................... 15
Figure 42 – Place focus block assembly onto rollers ............................................................................................................ 15
Figure 43 – Withdraw the guide block about halfway .......................................................................................................... 15
Figure 44 – Place four rollers on the upper guide rails ......................................................................................................... 15
Figure 45 – Push cylindrical rollers into guide ‐ rail channel .................................................................................................. 15
Figure 46 – Push the spacer rod into guide ‐ rail channel ...................................................................................................... 16