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

   

 

Page 13 of 18 

 

 

Revision 3 

Reinstall the Slotted Lock Ring 

Carefully  engage  the  threads  of  the  slotted  lock  ring 
with the pivot-adjustment screw (se

Figure 33

).   

 

Figure 33 

 Reinstall the slotted lock ring 

Spin  the  revolving  turret  until  one  of  the  six  threaded 
objective  bores  in  the  revolving  turret  aligns  with  the 
bore  in  the  stationary  base.    Insert  a  suitably  sized 
screwdriver  handle  into  these  bores  to  lock  the 
revolving  turret  to  the  stationary  base.    Use  a  suitable 
tool (se

Figure 9

) to snug the slotted lock ring down to 

lock  the  pivot-adjustment  screw  in  place  (see 

Figure 

34

).  Do not allow the pivot-adjustment screw to rotate 

while tightening the slotted lock ring. 

 

Figure 34 

 Tighten the slotted lock ring 

Verify the Feel of the Revolving Nosepiece 

Hold the turret assembly by gripping the stationary base 
in one hand and spin the revolving turret 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 lock ring (as described above) until 
the turret motion feels acceptable. 

Clean Off Any Visible Grease 

Use a suitable solvent (e.g., mineral spirits) and a clean 
rag or tissue to thoroughly clean any visible grease from 
the  exterior  of  the  turret  assembly.    Be  careful  while 
removing  the  excess  grease,  to  prevent  any  of  the 
solvent  from  dripping  into  the  revolving  turret 
mechanism and fouling the grease within.

 

Reinstall the Mechanical Detent Stop 

Place  the  mechanical  detent  stop  in  position  on  the 
stationary  base,  aligning  the  two  holes  in  the 
mechanical  detent  stop  with  the  two  tapped  holes  in 
the stationary base (see 

Figure 35

).  Make sure the stop 

ball on the mechanical detent stop is facing downwards. 

 

Figure 35 

 Place the mechanical detent stop in position 

Use  a  suitable  JIS  screwdriver  to  reinstall  two  M2X4 
pan-head screws to  secure the mechanical detent  stop 
in place on the stationary base (see 

Figure 36

). 

 

Figure 36 

 Secure the detent stop with two screws 

Apply Grease to the Mechanical Detents 

Apply  fresh  grease  (item  S2  o

Appendix  1

)  to  the  six 

mechanical  detent  notches  in  the  revolving  turret  (see 

Figure  37

).    Be  careful  that  you  do  not  get  grease 

anywhere else. 

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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