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Complete

Teardown,

Cleaning,

and

Reassembly

of

the

Olympus

BH

‐

2

Sliding

Focus

Block

Revision

2

Page

1

of

23

Complete

Teardown,

Cleaning,

and

Reassembly

of

the

Olympus

BH

‐

2

Sliding

Focus

Block

(Revision

2)

Copyright

©

2017,

2018

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

1

***

Initial

Release

***

September

4,

2017

2

Added

removal

procedure

for

the

bottom

dust

guard

and

made

minor

revisions.

April

13,

2018

1
2
3
...
»

Содержание BH-2 BHS

Страница 1: ...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 d...

Страница 2: ...Tensioning the Slide Mechanism 9 Remove the Focus Block Assembly from the Arm 9 Clean the Various Slide Components 10 Remove the Guide Rails from the Arm Casting 10 Remove and Reinstall the Bottom Du...

Страница 3: ...endix 1 How to Install Guide Rails in the Sliding Focus Block Mechanism 20 Placement of Guide Rails in the Side Grooves 20 Holding the Guide Rails in Place for Reassembly 20 Reinstalling Guide Rails i...

Страница 4: ...gure 22 Remove the bottom dust cover 11 Figure 23 Remove two guide rails from the focus block 11 Figure 24 Clean grease from side groove in focus block 12 Figure 25 Remove guide rails from the guide b...

Страница 5: ...e 56 Align holes in the base with holes in the arm 18 Figure 57 Attach the base onto the arm of the stand 18 Figure 58 Secure the arm onto the base of the stand 18 Figure 59 Reinstall screws to secure...

Страница 6: ...mechanism such as may be caused by dried grease puts high stresses on the plastic drive gears in the fine focus mechanism and these can be damaged if these stresses are too high Tools Needed The follo...

Страница 7: ...ng and grease may be omitted at the risk of more long term wear of the mechanical components Mobil PolyrexTM EM or Molykote 44 items 7 and 5 of Appendix 2 are recommended if lubrication is desired in...

Страница 8: ...electrical base Hold the electrical base in place and set the stand in its normal upright position on a flat surface being careful not to let the electrical base shift as you do so Lift the stand from...

Страница 9: ...r Remove the now loose trim cover from the arm casting see Figure 9 Figure 9 Remove the loose trim cover from the arm Loosen the Screws Tensioning the Slide Mechanism Use a 2 5mm Allen wrench or drive...

Страница 10: ...15 Figure 15 The components of the focus block assembly Remove the two brass shims from the guide block see Figure 16 Figure 16 Remove the brass shims from the focus block Use a 2 5mm Allen wrench or...

Страница 11: ...y be desirable to allow for a more thorough cleaning of any dust and debris accumulation in the area of the dust cover and the removal procedure is included in this document for the sake of completene...

Страница 12: ...m side groove in guide block Clean the Cylindrical Rollers Soak the cylindrical rollers in a suitable solvent e g acetone to remove all grease from the rollers see Figure 27 Figure 27 Soak the rollers...

Страница 13: ...rails see Figure 32 and Figure 33 Figure 31 Reinstall short guide rails into the focus block Figure 32 Scrub grease from guide rails and focus block Figure 33 Guide rails installed into the focus blo...

Страница 14: ...talled into its side groove into position on top of the two brass shims sitting on the focus block see Figure 39 Note the proper orientation of the beveled edge of the guide block see Figure 40 Figure...

Страница 15: ...Lightly coat four of the cylindrical rollers and the remaining plastic spacer rod with a suitable grease item 5 or 7 of Appendix 2 Place these four greased cylindrical rollers onto the greased guide...

Страница 16: ...ut of position on the guide rails as they are pushed into the channel Align the three holes in the focus block with the tapped holes in the guide block see Figure 48 Figure 48 Push guide block and rol...

Страница 17: ...full range of motion of the focus block see Figure 52 If necessary loosen the three M3x12 hex socket head cap screws securing the guide block to the focus block and the two M3x16 hex socket head cap...

Страница 18: ...Tighten the four M6x25 screws to secure the arm to the base see Figure 58 Figure 58 Secure the arm onto the base of the stand Reinstall the Electrical Base Carefully lower the assembled stand over th...

Страница 19: ...t Original Olympus Documentation An early version of the Olympus BH2 BHS repair manual see Figure 60 was referenced during the preparation of this document A scanned PDF version of this manual is avai...

Страница 20: ...ld end up on the exposed bearing surfaces of the guide rails which would interfere with the cylindrical rollers and prevent free motion of the sliding focus block Rather than utilizing adhesive the gu...

Страница 21: ...igure 67 and press the guide rail down firmly at the ends to thoroughly embed it into the grease see Figure 68 Figure 67 Place second guide rail into the guide block Figure 68 Set the second guide rai...

Страница 22: ...ugh removal of this heavy grease is important since any exposed grease can lead to an accumulation of dust and debris which might eventually foul the sliding focus block mechanism The Prepared Guide B...

Страница 23: ...1 2 5mm Allen Driver T Handle Wiha 33437 Amazon 8 59 2 4 0mm Allen Driver T Handle Wiha 33408 Amazon 8 25 3 5 0mm Allen Driver T Handle Wiha 33411 Amazon 8 89 4 Screwdriver set JIS 4 pieces Hozan JIS...

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