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

   

 

Page 10 of 18 

 

 

Revision 3 

Remove the Threaded Retaining Ring 

The  stationary  base  is  held  inside  the  recess  of  the 
revolving  turret  by  the  threaded  retaining  ring  (see 

Figure 18

). 

 

Figure 18 

 Components of the turret assembly 

Place the turret assembly into a suitable work vise and 
use a heat gun to thoroughly heat the turret assembly, 
to soften the internal grease.  Then use a center punch 
or nailset tool to loosen the  threaded retaining ring by 
placing  the  tip  of  the  tool  into  one  of  the  four  tooling 
holes in the threaded retaining ring (se

Figure 18

and 

driving the threaded retaining ring counter-clockwise by 
carefully tapping the tool with a small hammer or mallet 
(se

Figure 19

).  Be careful and do not accidentally put 

the  center  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  irreparably 
damaged when the punch is struck by the mallet. 

 

Figure 19 

 Loosen the threaded retaining ring

 

Continue  loosening  the  threaded  retaining  ring  and 
remove it, being careful that the perimeter bearing balls 
beneath the threaded retaining ring do not fall out and 
become lost in the process (se

Figure 20

). 

 

Figure 20 

 Remove the threaded retaining ring

 

Remove the Perimeter Bearing Balls 

Carefully  remove  the  3/32”  bearing  balls 

(there  are  80 

of them) from the perimeter of the stationary base.  A 
small magnet can come in handy here (see 

Figure 21

).

 

 

Figure 21 

 Remove the perimeter bearing balls 

Remove the Stationary Base from the Turret 

Once  the  perimeter  bearing  balls  have  been  removed, 
lift  the  stationary  base  free  of  the  recess  in  the 
revolving turret and remove it (see 

Figure 22

). 

 

Figure 22 

 Lift and remove the stationary base 

Содержание BH2-5RE

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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