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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...