Olympus BH2-5RE, Complete Teardown, Cleaning, And Reassembly

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Complete Teardown, Cleaning, and Reassembly of the Olympus BH2-5RE Modular Revolving Nosepiece Page 2 of 18
Revision 3
Table of Contents
Introduction ............................................................................................................................................................................ 5
Scope of this Document ...................................................................................................................................................... 5
Tools Needed .......................................................................................................................................................................... 5
A Few Words about JIS Screws ........................................................................................................................................... 5
Supplies Needed ..................................................................................................................................................................... 5
Recommended Lubricant Types .......................................................................................................................................... 5
Recommended Solvents ..................................................................................................................................................... 6
Safety Considerations with Solvents ................................................................................................................................... 6
Solvent Compatibility with Parts and Finishes .................................................................................................................... 6
Before Starting the Overhaul .................................................................................................................................................. 6
Remove the Objectives from the Nosepiece ...................................................................................................................... 6
Label Parts for Identification and Reassembly .................................................................................................................... 6
Service the BH2-5RE Modular Nosepiece ............................................................................................................................... 6
Remove the Dovetail Slide .................................................................................................................................................. 6
Remove the Cover from the Turret Assembly .................................................................................................................... 7
Remove Lock Ring for Pivot-Adjustment Screw .................................................................................................................. 7
Remove the Pivot-Adjustment Screw ................................................................................................................................. 8
Remove the Center-Pivot Bearing Ball ................................................................................................................................ 9
Remove the Mechanical Detent Stop ................................................................................................................................. 9
Remove the Knurled-Rubber Grip Ring ............................................................................................................................... 9
Remove the Threaded Retaining Ring .............................................................................................................................. 10
Remove the Perimeter Bearing Balls ................................................................................................................................ 10
Remove the Stationary Base from the Turret ................................................................................................................... 10
Clean Grease from the Various Components ................................................................................................................... 11
Reinstall Stationary Base into Revolving Turret ................................................................................................................ 11
Apply Ring of Grease for the Perimeter Balls ................................................................................................................... 11
Reinstall the Perimeter Bearing Balls ................................................................................................................................ 11
Reinstall the Threaded Retaining Ring .............................................................................................................................. 11
Apply Grease to the Center-Pivot Bore ............................................................................................................................. 12
Reinstall the Center-Pivot Bearing Ball ............................................................................................................................. 12
Apply Grease to Top of the Center-Pivot Ball ................................................................................................................... 12
Reinstall the Pivot-Adjustment Screw .............................................................................................................................. 12
Reinstall the Slotted Lock Ring .......................................................................................................................................... 13
Verify the Feel of the Revolving Nosepiece ...................................................................................................................... 13
Clean Off Any Visible Grease ............................................................................................................................................. 13
Reinstall the Mechanical Detent Stop............................................................................................................................... 13
Apply Grease to the Mechanical Detents ......................................................................................................................... 14
Reinstall the Protective Cover ........................................................................................................................................... 14
Reinstall the Dovetail Slide ............................................................................................................................................... 14
Reinstall the Knurled-Rubber Grip Ring ............................................................................................................................ 15
Ready for Service .................................................................................................................................................................. 15
Requirements for Periodic Maintenance .............................................................................................................................. 15
Problems with the Turret Assembly ..................................................................................................................................... 16
Original Olympus Documentation ........................................................................................................................................ 16
Olympus Research Microscopes Series BH2 (BHS) Repair Manual ................................................................................... 16
Olympus Research Microscope BH2 Repair Manual......................................................................................................... 16
How to Contact the Author ................................................................................................................................................... 16
Appendix 1 ............................................................................................................................................................................ 17
Inspecting the Revolving Turret for Wear of the Mechanical Detents ............................................................................. 17
Appendix 2 ............................................................................................................................................................................ 18