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Olympus BH-2 BHS Microscope manual available for free PDF download: Complete Teardown, Cleaning, And Reassembly
Olympus BH-2 BHS Complete Teardown, Cleaning, And Reassembly (23 pages)
Sliding Focus Block
Brand:
Olympus
| Category:
Microscope
| Size: 3.36 MB
Table of Contents
Table of Contents
2
Introduction
6
Figure 1 - Head of a Typical JIS Screw
6
Scope of this Document
6
A Caution Regarding Stiff Focus Mechanisms
6
Tools Needed
6
A few Words about JIS Screws
6
Supplies Needed
6
Recommended Solvents
6
Safety Considerations with Solvents
6
Figure 2 - Protect the Top of the Arm from Dust
7
Solvent Compatibility with Parts and Finishes
7
Recommended Lubricants
7
Label Parts for Identification and Reassembly
7
Part of a Comprehensive Focus Overhaul
7
Protect the Exposed Mounting Dovetails
7
Separate the Arm from the Base
8
Remove the Lamphouse
8
Remove the Electrical Base
8
Remove the Arm from the Base
8
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
Disassemble the Sliding Focus Block
9
Remove the Trim Cover
9
Loosen the Screws Tensioning the Slide Mechanism
9
Remove the Focus Block Assembly from the Arm
9
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
Clean the Various Slide Components
10
Remove the Guide Rails from the Arm Casting
10
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
Remove and Reinstall the Bottom Dust Cover
11
Remove the Guide Rails from the Focus Block
11
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
Remove the Guide Rails from the Guide Block
12
Clean the Cylindrical Rollers
12
Reassemble the Sliding Focus Block
12
Reinstall the Guide Rails into the Arm Casting
12
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
Reinstall the Guide Rails into the Focus Block
13
Reinstall the Guide Rails into the Guide Block
13
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
Apply Grease to the Guide Rails (Optional)
14
Place the Guide Block into Position on the Focus Block
14
Place Cylindrical Rollers Onto Lower Guide Rails of Arm
14
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
Place Focus Block Assembly Onto Cylindrical Rollers
15
Place Cylindrical Rollers Onto the Upper Guide Rails
15
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
Mount the Guide Block into Position
16
Adjust for no Lateral Play in the Sliding Focus Block
16
Figure 46 - Push the Spacer Rod into Guide-Rail Channel
16
Figure 47 - Place Remaining Rollers Onto Upper Guide Rails
16
Figure 48 - Push Guide Block and Rollers into the Channel
16
Figure 49 - Reinstall Screws to Secure the Guide Block
16
Secure the Guide Block in Position
17
Test the Focus Block for Freedom of Motion
17
Reinstall the Trim Cover
17
Figure 50 - Adjust for Free Motion Without Lateral Play
17
Figure 51 - Secure the Guide Block in Position
17
Figure 52 - Test the Sliding Focus Block for Proper Motion
17
Figure 53 - Reposition Trim Cover Onto the Arm Casting
17
Figure 54 - Reinstall Screws to Secure the Trim Cover
17
Reinstall the Arm Onto the Base
18
Reinstall the Electrical Base
18
Figure 55 - Place the Arm Flat on the Work Surface
18
Figure 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 the Electrical Base
18
Continue with the Coaxial Focus Overhaul
19
Original Olympus Documentation
19
How to Contact the Author
19
Figure 60 - the Olympus BH2 (BHS) Repair Manual
19
Appendix 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 into the Guide Block
20
Clean the Old Grease from the Slide Parts
20
Apply Heavy Grease to both Ends of the Guide Block
20
Figure 61 - Correct Orientation of the Guide Rails
20
Figure 62 - Thoroughly Clean the Guide Rails
20
Figure 63 - Thoroughly Clean the Guide Block
20
Set the Guide Rails into the Greased Guide
21
Clean Grease after Reinstalling the Guide Rails
21
Figure 64 - Apply Grease to both Ends of the Guide Block
21
Figure 65 - Place First Guide Rail into the Guide Block
21
Figure 66 - Set the First Guide Rail into the Grease
21
Figure 67 - Place Second Guide Rail into the Guide Block
21
Figure 68 - Set the Second Guide Rail into the Grease
21
Figure 69 - Scrub any Visible Grease from the Guide Rails
21
The Prepared Guide Block Is Ready to be Reinstalled
22
Figure 70 - Prepared Guide Block Ready for Reinstallation
22
Appendix 2 - Sources for Replacement Tools and Supplies Referenced in this Document
23
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