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Complete Teardown, Cleaning, and Reassembly of the Olympus BH2-6RE Modular Revolving Nosepiece               

   

 

Page 7 of 18 

 

 

Revision 3 

 

Figure 4 

 Remove four screws securing the dovetail slide 

 

Figure 5 

 Remove the loose dovetail slide 

Remove the Cover from the Turret Assembly 

Use  a  suitable  JIS  screwdriver  to  remove  the  three 
M2X3 countersink screws securing the protective cover 
onto the stationary base (see 

Figure 6

and remove the 

protective  cover  from  the  turret  assembly  (see 

Figure 

7

).   

 

Figure 6 

 Remove screws securing the cover in place 

 

 

Figure 7 

 Remove the protective cover 

 

Figure 8 

 The turret assembly (without cover) 

Remove Lock Ring for Pivot-Adjustment Screw 

The  slotted  lock  ring  for  the  pivot-adjustment  screw 
(see 

Figure  8

can  be  difficult  to  remove  unless  the 

proper  tool  is  used.    Do  not  attempt  to  remove  the 
slotted lock ring and pivot-adjustment screw unless you 
have access to such a tool, since the slot in the lock ring 
will  likely  be  damaged  if  you  use  an  improper  tool, 
making removal of the lock ring much more difficult

1

A suitable tool for this task can be easily made by filing 
or grinding a relief notch for the pivot-adjustment screw 
in the center of the blade of a large slotted screwdriver, 
as shown in 

Figure 9

.  Note that if you decide to make 

such a tool, be sure that the tip of the screwdriver you 
select has a blade width matching the outer diameter of 
the slotted lock ring, and that the thickness of the blade 

 

1

 

Don’t  even  think  about  using  a  pair  of  needle

-nose  pliers  to  loosen  the 

slotted lock ring.  It will end badly if you do this.  Don’t ask me how I know 

this. 

Summary of Contents for BH2-6RE

Page 1: ...tribute 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 documen...

Page 2: ...rimeter 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 Perim...

Page 3: ...ure 18 Components of the turret assembly 10 Figure 19 Loosen the threaded retaining ring 10 Figure 20 Remove the threaded retaining ring 10 Figure 21 Remove the perimeter bearing balls 10 Figure 22 Li...

Page 4: ...f 18 Revision 3 Figure 43 Reinstall the knurled rubber grip ring 15 Figure 44 Remove any silicone RTV squeeze out 15 Figure 45 BH2 6RE ready to be put back into service 15 Figure 46 Revolving turret w...

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 5RE five 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 Remov...

Page 7: ...stment screw see Figure 8 can be difficult to remove unless the proper tool is used Do not attempt to remove the slotted lock ring and pivot adjustment screw unless you have access to such a tool sinc...

Page 8: ...ds 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 grasping the knurled rubber grip ring on the outer...

Page 9: ...lace 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 with a heat g...

Page 10: ...ter punch or nailset tool into one of the six 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 irrepa...

Page 11: ...er 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...

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: ...oosen the slotted lock ring readjust the pivot adjustment screw and retighten the slotted lock ring as described above until the turret motion feels acceptable Clean Off Any Visible Grease Use a suita...

Page 14: ...the stationary base see Figure 40 Be sure to orient the dovetail slide such that the relief notch see inset of Figure 40 is facing downwards and towards the slotted lock ring on the pivot adjustment s...

Page 15: ...removing the protective cover cleaning and re greasing the detent notches and then reinstalling the protective cover per the procedures detailed in this document The dovetail slide does not need to be...

Page 16: ...n properly adjusted to remove the play in the center pivot mechanism How to Contact the Author Please feel free to direct any questions or comments regarding this document or BH 2 microscopes in gener...

Page 17: ...resistant layer of dull silver colored plating on the exposed surface When the hard plating in the area of the mechanical detents begins to wear away as a result of severe use without routine cleaning...

Page 18: ...t Item Description Manufacturer Manufacturer Model Vendor Vendor Price S1 E6000 adhesive black 2 oz 32329 Amazon 8 22 S2 Plastilube Brake Grease 75 cc Plastilube ATE70015 Amazon 10 88 Plastilube Brake...

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