background image

Complete Teardown, Cleaning, and Reassembly of the Olympus BH2-5RE Modular Revolving Nosepiece                

   

 

Page 1 of 18 

 

 

Revision 3 

Complete Teardown, Cleaning, and 

Reassembly of the Olympus BH2-5RE 

Modular Revolving Nosepiece 

Revision 3 

 

Copyright © 2018, 2020, 2021 Carl Hunsinger 

All  rights  reserved.    This  document  may  not  be  reproduced  or  distributed,  in  whole  or  in  part,  for  any  commercial 
purpose  without the express  written consent of the author (

[email protected]

).  Permission is hereby granted to 

distribute this PDF document in its entirety for personal, non-commercial purposes only, provided that the contents are 
not modified in any way, including the copyright notices contained herein.  This document may be freely distributed on 
WWW,  FTP,  or  BBS  sites  in  accordance  with  these  restrictions.    The  content  of  this  document  is  provided  for 
informational  purposes  only,  with  no  expressed  or  implied  warranties  whatsoever,  including,  but  not  limited  to, 
function, suitability, safety, accuracy, or completeness of information. 

Revision History

 

Revision 

Description of Changes 

Date 

Initial release 

June 25, 2018 

Show worn mechanical detents 

July 13, 2020 

Common formatting, minor changes 

May 19, 2021 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for BH2-5RE

Page 1: ...ribute this PDF document in its entirety for personal non commercial purposes only provided that the contents are not modified in any way including the copyright notices contained herein This document...

Page 2: ...onary 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 Bea...

Page 3: ...0 Figure 20 Remove the threaded retaining ring 10 Figure 21 Remove the perimeter bearing balls 10 Figure 22 Lift and remove the stationary base 10 Figure 23 Reinstall stationary base into revolving tu...

Page 4: ...lympus BH2 5RE Modular Revolving Nosepiece Page 4 of 18 Revision 3 Figure 45 BH2 5RE ready to be put back into service 15 Figure 46 Revolving turret with severely worn mechanical detents 17 Figure 47...

Page 5: ...on revolving modular nosepiece assembly used on the Olympus BHS BHSP BHT and BHTP microscope stands This procedure is also applicable the BH2 6RE six position modular revolving nosepiece assembly due...

Page 6: ...due to solvent absorption The list of solvents generally considered safe for nylon includes acetone diethyl ether heptane mineral spirits naphthalene and turpentine Before Starting the Overhaul Remove...

Page 7: ...ve unless the proper tool is used Do not attempt to remove the slotted lock ring from the pivot adjustment screw unless you have access to such a tool since the slot in the lock ring will likely be da...

Page 8: ...causing any damage to the fragile brass threads in the revolving turret Figure 10 Insert screwdriver into bores to lock turret Loosen and Remove the Slotted Lock Ring Hold the turret assembly by gras...

Page 9: ...taked in place with adhesive and can be surprisingly stubborn to remove so be sure to use the proper JIS screwdriver to prevent damaging the screw heads It might also be helpful to heat the screws wit...

Page 10: ...ter punch or nailset tool into one of the five detent notches in the revolving turret instead of into one of the four tooling holes in the threaded retaining ring or the revolving turret will be irrep...

Page 11: ...of the revolving turret see Figure 24 Do not apply too much grease here to minimize the squeeze out that will occur when the threaded retaining ring is reinstalled to hold the stationary base into the...

Page 12: ...that the center pivot bore has been greased reinstall the bearing ball into the freshly greased center pivot bore The grease will hold the center pivot bearing ball in the proper position during subs...

Page 13: ...with the other hand The motion of the turret should not feel gritty erratic or excessively stiff If it does loosen the slotted lock ring readjust the pivot adjustment screw and retighten the slotted...

Page 14: ...suitable JIS screwdriver to reinstall three M2X3 countersink screws to secure the protective cover onto the stationary base see Figure 39 Figure 39 Secure protective cover using three screws Reinstall...

Page 15: ...rubber grip ring Use dry cotton swabs lightly dampened with isopropyl alcohol to thoroughly remove any adhesive squeeze out see Figure 44 Figure 44 Remove any adhesive squeeze out Ready for Service Th...

Page 16: ...f the stationary base If there is excess play in the center pivot ball such that the turret is not held in the exact center point the whole turret may move slightly resulting in poor objective centeri...

Page 17: ...lored plating on the exposed surface When the hard plating in the area of the mechanical detents begin to wear away as a result of severe use without routine cleaning and re greasing of the detents th...

Page 18: ...document Item Description Manufacturer Manufacturer Model Vendor Vendor Price S1 E6000 adhesive black 2 oz E6000 Amazon 8 22 S2 Plastilube Brake Grease 75 cc Plastilube ATE70015 Amazon 10 88 Plastilu...

Reviews: