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Prepared By:    Tim Wojo

Revision: 1-050309

Page 1 of 9

40-6910 Service Manual

40-6910 22x Builders Level

Service Manual

Item

Description

Pages

1.0

Overall Instrument Assembly

2

1.1

Main Assembly

2

1.2

Telescope Assembly

3

1.3

Base Assembly

4

1.4 

Frame Assembly

5

2.0

Calibration

6-8

2.1

Vial Verification/Calibration

6

2.2

Line of Site Verification/Calibration

7

2.3

Vertical Accuracy Verification/Calibration

8

3.0

Trouble Shooting Guide

9

Summary of Contents for 40-6910 22x

Page 1: ...tem Description Pages 1 0 Overall Instrument Assembly 2 1 1 Main Assembly 2 1 2 Telescope Assembly 3 1 3 Base Assembly 4 1 4 Frame Assembly 5 2 0 Calibration 6 8 2 1 Vial Verification Calibration 6 2 2 Line of Site Verification Calibration 7 2 3 Vertical Accuracy Verification Calibration 8 3 0 Trouble Shooting Guide 9 ...

Page 2: ...r to disassemble cross slot plate screw M2 4 4 2 Counterturn the horizontal micro motion knob on the 1 Remove Rubber 1 1 rubber cover 2 2 and rubber cover 3 3 by hand 2 Remove vertical locking knob 17 and vertical fine adjustment knob 14 from frame assembly 13 by turning counter clockwise 3 Remove telescope assembly 6 from Frame Assembly 13 by removing 4 Retaining screws 15 2 Press covers 16 2 dam...

Page 3: ...ing screws 6 20 6 Remove Vertical Locking Loop 6 18 from Telescope Assembly 6 by sliding off axis elastic retainer 6 17 and Vertical Locking Loop 6 18 Item JLT Part Description Qty Item JLT Part Description Qty 6 1 AP2001 Objective Press Loop 1 6 13 AP1449 M2 5 x 6 Cross slot Plate Screw 2 6 2 AP2002 Objective glued lens 1 6 14 AP2013 Horizontal micro motion loop 1 6 3 AP2003 Focus Lens assembly 1...

Page 4: ...ed rotate each foot screw counter clock wise to unscrew them from the Based module 8 7 3 Remove Press Board 809 from Bottom plate 8 10 by removing 3 retaining screws 8 8 4 Remove the Bottom module 8 12 from the Bottom plate 8 10 by removing the 3 retaining screws 8 13 Item JLT Part Description Qty 8 1 AP2017 C ring 1 8 2 AP2018 Compression Spring 1 8 3 AP2019 Spacer 1 8 4 N A N A 0 8 5 AP2020 Hori...

Page 5: ... 5 counter clockwise until it comes out 4 Remove vertical vernier 13 10 and bracket 13 11 from Frame Assembly 13 by removing 2retaining screws 13 4 and 13 9 respectively 5 Remove horizontal vernier 13 13 from Frame Assembly 13 by removing 2 retaining screws 13 12 Item JLT Part Description Qty 13 1 AP2038 Position Block Screw 1 13 2 AP2039 Elastic Gasket 1 13 3 AP2041 Position Block 1 13 4 AP1022 M...

Page 6: ...hat both thumbs are moving in opposite directions either toward each other or away from each other in order to make the bubble centered Then turn the telescope to the position as shown in figure B turn the foot screw C to make bubble centered Now the instrument should be leveled up but to be certain double check Rotate the instrument by any angle and the bubble should always be centered Otherwise ...

Page 7: ...he stadia lines inside the collimator tube If the center horizontal hair on the stadia lines of the instrument is not coincident with the horizontal reference line on the of the collimator tube the instrument should be calibrate using the method below 1 Remove rubber cover 3 3 to expose calibration set screws 6 6 and 6 16 2 Using a 1 5mm Allen wrench loosen calibration set screws 6 6 and 6 16 3 Ro...

Page 8: ... tolerance and should be calibrated 2 3 3 Vertical accuracy calibration 1 If the vertical hair locates on the left side of the zero position as shown below use a hexagon spanner to loosen elevation difference level screw 2 and tighten elevation difference level screw 1 as shown below Tighten the two level screws simultaneously until the vertical hair coincides with the zero position 2 If the verti...

Page 9: ...hanism 2 The focus knob doesn t work The upper gear on the focus tube has a lot of wear Replace the focus tube 3 Fail to level the bubble The bubble is broken Replace the bubble 4 The cross hair is obscure The position of the eyepiece is not correct Adjust the position of the eyepiece 5 There is something on the reticle The reticle is dirty Clean the reticle 6 Bubble is not centered in any directi...

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