Olympus BH-2 BHS, Complete Teardown, Cleaning, And Reassembly

 

Complete

 

Teardown,

 

Cleaning,

 

and

 

Reassembly

 

of

 

the

 

Olympus

 

BH

‐

2

 

Sliding

 

Focus

 

Block

 

Revision

 

2

 

Page

 

4

 

of

 

23

 

Table

 

of

 

Figures

 

Figure

 

1

 

–

 

Head

 

of

 

a

 

typical

 

JIS

 

screw

 

.....................................................................................................................................

 

6

 

Figure

 

2

 

–

 

Protect

 

the

 

top

 

of

 

the

 

arm

 

from

 

dust

 

....................................................................................................................

 

7

 

Figure

 

3

 

–

 

Remove

 

the

 

lamphouse

 

from

 

the

 

base

 

..................................................................................................................

 

8

 

Figure

 

4

 

–

 

Bottom

 

view

 

of

 

the

 

BHT/BHTU

 

electrical

 

base

 

......................................................................................................

 

8

 

Figure

 

5

 

–

 

Light

 

pre

‐

set

 

control

 

and

 

pre

‐

set

 

switch

 

................................................................................................................

 

8

 

Figure

 

6

 

–

 

Remove

 

screws

 

securing

 

the

 

arm

 

to

 

the

 

base

 

.......................................................................................................

 

8

 

Figure

 

7

 

–

 

Separate

 

the

 

arm

 

from

 

the

 

base

 

............................................................................................................................

 

8

 

Figure

 

8

 

–

 

Remove

 

screws

 

securing

 

the

 

trim

 

cover

 

................................................................................................................

 

9

 

Figure

 

9

 

–

 

Remove

 

the

 

loose

 

trim

 

cover

 

from

 

the

 

arm

 

...........................................................................................................

 

9

 

Figure

 

10

 

–

 

Loosen

 

screws

 

securing

 

guide

 

block

 

in

 

place

 

.......................................................................................................

 

9

 

Figure

 

11

 

–

 

Loosen

 

screws

 

tensioning

 

slide

 

mechanism

 

........................................................................................................

 

9

 

Figure

 

12

 

–

 

Withdraw

 

focus

 

block

 

assembly

 

from

 

the

 

arm

 

....................................................................................................

 

9

 

Figure

 

13

 

–

 

Remove

 

screws

 

securing

 

the

 

guide

 

block

 

..........................................................................................................

 

10

 

Figure

 

14

 

–

 

Remove

 

the

 

guide

 

block

 

from

 

the

 

focus

 

block

 

...................................................................................................

 

10

 

Figure

 

15

 

–

 

The

 

components

 

of

 

the

 

focus

 

block

 

assembly

 

...................................................................................................

 

10

 

Figure

 

16

 

–

 

Remove

 

the

 

brass

 

shims

 

from

 

the

 

focus

 

block

 

..................................................................................................

 

10

 

Figure

 

17

 

–

 

Remove

 

screws

 

and

 

wedge

 

nuts

 

........................................................................................................................

 

10

 

Figure

 

18

 

–

 

Remove

 

four

 

guide

 

rails

 

from

 

the

 

arm

 

casting

 

...................................................................................................

 

10

 

Figure

 

19

 

–

 

Clean

 

grease

 

from

 

the

 

guide

 

rails

 

......................................................................................................................

 

11

 

Figure

 

20

 

–

 

Clean

 

grease

 

from

 

the

 

side

 

grooves

 

in

 

the

 

arm

 

.................................................................................................

 

11

 

Figure

 

21

 

–

 

Remove

 

screws

 

securing

 

bottom

 

dust

 

cover

 

.....................................................................................................

 

11

 

Figure

 

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

 

block

 

...........................................................................................................

 

12

 

Figure

 

26

 

–

 

Clean

 

grease

 

from

 

side

 

groove

 

in

 

guide

 

block

 

...................................................................................................

 

12

 

Figure

 

27

 

–

 

Soak

 

the

 

rollers

 

in

 

solvent

 

to

 

remove

 

grease

 

.....................................................................................................

 

12

 

Figure

 

28

 

–

 

Reinstall

 

the

 

long

 

guide

 

rails

 

into

 

the

 

arm

 

.........................................................................................................

 

12

 

Figure

 

29

 

–

 

Scrub

 

grease

 

from

 

guide

 

rails

 

and

 

arm

 

..............................................................................................................

 

12

 

Figure

 

30

 

–

 

Guide

 

rails

 

installed

 

into

 

the

 

arm

 

casting

 

...........................................................................................................

 

13

 

Figure

 

31

 

–

 

Reinstall

 

short

 

guide

 

rails

 

into

 

the

 

focus

 

block

 

..................................................................................................

 

13

 

Figure

 

32

 

–

 

Scrub

 

grease

 

from

 

guide

 

rails

 

and

 

focus

 

block

 

...................................................................................................

 

13

 

Figure

 

33

 

–

 

Guide

 

rails

 

installed

 

into

 

the

 

focus

 

block

 

...........................................................................................................

 

13

 

Figure

 

34

 

–

 

Reinstall

 

short

 

guide

 

rails

 

into

 

the

 

guide

 

block

 

..................................................................................................

 

13

 

Figure

 

35

 

–

 

Scrub

 

grease

 

from

 

guide

 

rails

 

and

 

guide

 

block

 

..................................................................................................

 

13

 

Figure

 

36

 

–

 

Guide

 

rails

 

installed

 

into

 

the

 

guide

 

block

 

...........................................................................................................

 

14

 

Figure

 

37

 

–

 

Reinstall

 

the

 

brass

 

shims

 

onto

 

the

 

focus

 

block

 

..................................................................................................

 

14

 

Figure

 

38

 

–

 

Clean

 

exposed

 

grease

 

from

 

the

 

focus

 

block

 

......................................................................................................

 

14

 

Figure

 

39

 

–

 

Reinstall

 

guide

 

block

 

onto

 

the

 

focus

 

block

 

.........................................................................................................

 

14

 

Figure

 

40

 

–

 

Loosely

 

engage

 

screws

 

with

 

the

 

wedge

 

nuts

 

.....................................................................................................

 

14

 

Figure

 

41

 

–

 

Place

 

rollers

 

and

 

rod

 

onto

 

bottom

 

guide

 

rails

 

...................................................................................................

 

15

 

Figure

 

42

 

–

 

Place

 

focus

 

block

 

assembly

 

onto

 

rollers

 

............................................................................................................

 

15

 

Figure

 

43

 

–

 

Withdraw

 

the

 

guide

 

block

 

about

 

halfway

 

..........................................................................................................

 

15

 

Figure

 

44

 

–

 

Place

 

four

 

rollers

 

on

 

the

 

upper

 

guide

 

rails

 

.........................................................................................................

 

15

 

Figure

 

45

 

–

 

Push

 

cylindrical

 

rollers

 

into

 

guide

‐

rail

 

channel

 

..................................................................................................

 

15

 

Figure

 

46

 

–

 

Push

 

the

 

spacer

 

rod

 

into

 

guide

‐

rail

 

channel

 

......................................................................................................

 

16