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Interapid test indicator
spare parts - repair parts

 

 

Note: the drawings above are for the Interapid .0001" horizontal models. The parts for the .0005" indicator and the vertical models may have a slightly different appearance. Order parts for all models from the list below.

Test indicators with .001" graduations such as model 312B-20 and 312B-20V will take the same parts as the .0005" indicators.

Model 312B-15 and 312B-15V will take the same movement parts as the other .0001" models. The return lever is different and unique. Check the parts list carefully if ordering for these.

Professional repair service is available from Long Island Indicator if you'd rather have us take a look. See page 30 for details.

newarrow8100a1a1h1gTo order online, make note of the part numbers you need and then go to our price list.

0

plastic box for 312B-15 and 312B-15V models

106461newarrow8100a1a1h1a1

0

plastic insert for 106461

112324newarrow8100a1a1h1a

0

plastic storage box (not suitable for 312B-15 or 312B-15V)

111473newarrow8100a1a1h1b1

1

body 312B-1, 312B-2, 312B-20

111360newarrow8100a1a1h1c1

1

body 312B-3, 312B-4, 312B-15

111361newarrow8100a1a1h1d1

1

body 312B-1V, 312B-2V, 312B-20V

107480newarrow8100a1a1h1d1a

1

body 312B-3V, 312B-4V, 312B-15V

111949newarrow8100a1a1h1d1b

3

outer dial 0-40-0 (1.5" diameter)

026420newarrow8100a1a1h1e1

3

outer dial 0-10-0 (1.5" diameter)

026421newarrow8100a1a1h1e1a

3

outer dial 0-15-0 (1.5" diameter)

026422newarrow8100a1a1h1f1

3

outer dial 0-4-0 (1.5" diameter)

026423newarrow8100a1a1h1h1

3

outer dial 0-10-0 (1" diameter)

026425newarrow8100a1a1h1i1

3

outer dial 0-15-0 (1" diameter) .0005"

026426newarrow8100a1a1h1j1

3

outer dial 0-15-0 (1" diameter) .001"

026428newarrow8100a1a1h1k1

4

screw for dial (see note below)

105912newarrow8100a1a1h1l1

5

hand, revolution counter

108205newarrow8100a1a1h1m1

6

hand for 1" dial

108045newarrow8100a1a1h1n1

6

hand for 1.5" dial

item5

108046newarrow8100a1a1h1o1

7

contact lever .0001” (see notes)

110547newarrow8100a1a1h1p1

7

contact lever .0005”

110614newarrow8100a1a1h1q1

8

rack lever .0001”

110518newarrow8100a1a1h1r1

8

rack lever .0005”

110610newarrow8100a1a1h1s1

9

return lever .0001”

123083newarrow8100a1a1h1t1

9

return lever .0005”

123084newarrow8100a1a1h1u1

9

return lever for 312B-15 and 312B-15V

123101newarrow8100a1a1h1u1a

10

ball bearing with spanner nut

109941newarrow8100a1a1h1v1

11

spanner nut

123073newarrow8100a1a1h1w1

12

carbide contact points see page 21

13

pivot

105925newarrow8100a1a1h1x1

14

screw for dovetail

106289newarrow8100a1a1h1y1

15

dovetail large

106288newarrow8100a1a1h1z1

16

dovetail small

106287newarrow8100a1a1h127a

17

screw, travel limit

111326newarrow8100a1a1h128a

18

stem attachment screw (A) see notes below

111318newarrow8100a1a1h129a

19

stem attachment nylon (B) see notes below

111319newarrow8100a1a1h130a

20

stem attachment 4 mm (C) see notes below

111317newarrow8100a1a1h131a

3/8” adapter (fits over 4 mm stem #20)

108942newarrow8100a1a1h132a

21

stem attachment washer (D) see notes below

106034newarrow8100a1a1h133a

22

stem attachment bushing (E) see notes below

110666newarrow8100a1a1h134a

23

screw attaches movement to body from the back

105908newarrow8100a1a1h135a

24

bezel with crystal installed (1”) for models ending -2 -20 -4 -2V -20V

123079newarrow8100a1a1h136a

24

bezel with crystal installed (1.5”) for models ending -1 -3 -15 -1V -3V -15V

123080newarrow8100a1a1h137a

24

bezel only, small (1”)

110477newarrow8100a1a1h138a

24

bezel only, large (1.5”)

110479newarrow8100a1a1h139a

25

crystal, small bezel size 1” (see note below)

105967newarrow8100a1a1h140a

25

crystal, large bezel size 1.5” (plastic 36.0 mm convex) see notes

105968newarrow8100a1a1h141a

27

extension ring for large bezel

110300newarrow8100a1a1h142a

28

complete movement for B-1, B-2, B-20, B-1V, B-20V, B-2V

111904newarrow8100a1a1h142a1

28

complete movement for B-3, B-4, B-3V

111905newarrow8100a1a1h142a2

28

complete movement for B-15 and B-15V

026077newarrow8100a1a1h142a3

29

contact point wrench

018603-07newarrow8100a1a1h143a

30

dial 312-1 insert

026403newarrow8100a1a1h144a

30

dial 312-3 insert

026404newarrow8100a1a1h144a1

30

dial 312B-1 insert (use with dial ring 026422)

026409newarrow8100a1a1h145a

30

dial 312B-3 insert

026410newarrow8100a1a1h146a

30

dial 312B-2 insert

026411newarrow8100a1a1h147a

30

dial 312B-20 insert

026413newarrow8100a1a1h148a

30

dial 312B-3v insert

026414newarrow8100a1a1h149a

30

dial 312B-1v insert

026415newarrow8100a1a1h150a

30

dial 312B-2v insert

026416newarrow8100a1a1h151a

30

dial 312B-15 insert

026418newarrow8100a1a1h152a

30

dial 312B-15v insert

026419newarrow8100a1a1h153a

31

center pinion for 312-1, 312-2, 312-1V and 312-2V

123089newarrow8100a1a1h154a

31

center pinion for 312B-1, 312B-2, 312B-20, 312B-1V, 312B-2V, 312B-20V

123089newarrow8100a1a1h154a1

31

center pinion for 312-3, 312-4, 312B-3, 312B-4 and 312B-3V

123097newarrow8100a1a1h155a

31

center pinion for 312B-15 and 312B-15V

123097newarrow8100a1a1h155a1

32

bearing .0005” bottom

123088newarrow8100a1a1h156a

32

jewel .0001” bottom

123096newarrow8100a1a1h157a

33

hair spring gear .0005”

123091newarrow8100a1a1h158a

33

hair spring gear .0001”

123099newarrow8100a1a1h159a

31

hair spring gear for 312B-15 and 312B-15V

123099newarrow8100a1a1h159a1

34

spring washer

123082newarrow8100a1a1h160a

35

lower movement plate for .0005" and .001" models

123086newarrow8100a1a1h160a1

35

lower movement plate for .0001" and 312B-15 and 312B-15V

123094newarrow8100a1a1h160a1a

36

bearing .0005” top

123090newarrow8100a1a1h161a

36

jewel .0001” top

123098newarrow8100a1a1h162a

37

pin for hair spring

123078newarrow8100a1a1h163a

38

screw for bridge

123076newarrow8100a1a1h164a

40

crown gear for 312-1, 312-2, 312-1V and 312-2V

123087newarrow8100a1a1h165a

40

crown gear for 312B-1, 312B-2, 312B-20, 312B-1V, 312B-2V, 312B-20V

123087newarrow8100a1a1h165a1

40

crown gear for 312-3, 312-4, 312B-3, 312B-4 and 312B-3V

123095newarrow8100a1a1h166a1a

40

crown gear for 312B-15 and 312B-15V

123095newarrow8100a1a1h166a1

41

retaining ring (mounting ring with threads)

123081newarrow8100a1a1h167a

42

hair spring .0005”

123092newarrow8100a1a1h168a

42

hair spring .0005” and gear #123091 assembled

123092Anewarrow8100a1a1h169a

42

hair spring .0001”

123100newarrow8100a1a1h170a

42

hair spring .0001” and gear #123099 assembled

123100Anewarrow8100a1a1h171a

42

hair spring for 312B-15 and 312B-15v

123242newarrow8100a1a1h172a

43

screw for crown gear

123075newarrow8100a1a1h173a

44

crown gear bearing

123074newarrow8100a1a1h174a

newarrow8100a1a1h175ago to Price List and Order Page

Notes

 

Screw for dial: under some conditions these little screws have an annoying habit of unscrewing themselves as a result of vibrations. Don't take it personally if this happens to you. We suggest you tighten the screws on a regular basis—perhaps each time you calibrate the indicator—so that they won't fall out and jam up the works. It's a little bit like tightening those screws on your eyeglass frames, before they fall out—probably while you're on vacation somewhere. (The manufacturer solved this problem in new models made in 2014 by simply gluing these small dial screws in place. This can make it very hard to remove them during a repair.)

Horseshoe Clips used on the old Interapid 310 and 311 series indicators can be purchased from Mr. Wayne Root who has manufactured a supply of these. They are available on E-Bay by clicking here.

FYI: Ball Bearing tap size M4x0.35

Hair springs can be daunting so we've made a hair spring and gear assembly available. Just remove the old gear and hair spring, and replace with the new. See the parts list above.

Up and down pressure on the contact point should be about even. This is the function of the return lever (drawing #9) and the shape of the spring. For ideal performance, the shape of this spring should mimic that of a brand new part. Often times, this spring gets bent out of shape when it is removed during a repair attempt.

IMG1235 IMG1237

Part 123083 (left) for .0001" indicators, part 123084 (right) for .0005" indicators showing ideal spring shapes.

Crystal replacement: Interapid crystals are not user replaceable. They require a crystal press for insertion. The crystals are flat or just slightly convex, slightly over-sized and must be inserted with a crystal press. The crystal press will make them dome-shaped and this is what keeps the crystals in place. You can opt to purchase the bezel with crystal already installed (see parts list above) so that you simply remove the old bezel and screw on the new bezel with the new crystal, or you can send us the indicator with instructions to replace the crystal only. The cost is $30.

Removing the bezel: The bezel is threaded and unscrews. Hold the lower bezel plate steady with a small screw driver or pin, placed in one of the two holes, while you unscrew the bezel (see details below).

Stem attachment: If the mounting stem is bent or broken you can replace it with a bit of care. When you remove the old stem, don't lose the other parts. Unscrew A (#18), remove B (#19), tap out the bushing E (#22), save the washer D (#21) which goes on the inside, then remove stem C (#20). Reassemble in reverse order.

 

oldsytlestem
Be advised that we only sell the new style stem attachment. Old style stem attachments, pre-1965, are no longer available.

The old style, shown in the photo to the left, had an adjusting screw built into the stem and had a large diameter chrome pin running through the sides. It did not have the components shown in the drawing above.

It will not be possible to install the new style stem into the old model bodies.

 

 

IMG1205

Contact lever 110547 installed on the pivot. When replacing, be sure you do not install it backwards. The pivot and the contact point are not included when ordering this part.
 


 

How to tighten a loose bezel

bezeltightening
The bezel is screwed on as you have probably noticed.

Take a look under the rim and you'll see two holes. Insert a rod, a pin, a screw driver, something small into one of the holes. This will keep the plate from rotating while you turn the bezel and now you can tighten it again, by hand.

If you have the small diameter bezel, there won't be any holes but there will be two slots (you can also see this slot in the enclosed photo). The slots serve the same purpose for the small diameter indicators (but not for the large diameter).

 



 

 

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14 Sarah Drive — Hauppauge NY 11788 — USA
 


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This page's most recent revision: 11 APRIL 2014
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