BENDIX TCH-005-004 User Manual
Technical Bulletin
Bulletin No.: PRO-05-04 Effective Date: 12/05/78 Cancels: N/A Page: 1 of 2
Subject: AUTOMATIC SLACK ADJUSTER
The attached conversation chart will assist in converting from standard slack adjuster
piece numbers to ASA-1 or ASA-2. Please note that, where automatic slacks are
available to convert from standard 5/8” offset slacks, there will be corresponding piece
numbers for opposite sides. Also, please note; to replace a straight arm slack, two
automatic slack adjuster piece numbers may be required, one for either side. These are
not designated left or right because it really is not possible to tell which way they will go.
Automatic slack adjusters are available only in 5½, 6 and 6½ arm lengths and should be
used only on type 16, 20, 24 or 30 brake chambers. Slack adjusters with the easy-on
yoke 291378 and yoke adapter 291452 will adapt to a 5/8 – 18 thread on the push rod.
To adapt to a ½ - 20 thread yoke, adapter 292756 must be used.
Slacks with the quick-connect yoke 292922 may be used with a ½-20 push rod by using
adapter 292917, washer 292920 and retainer 292919, and for a 5/8 – 18 push rod,
adapter 292918, washer 282921 and retainer 292919 may be used. When slacks using
yoke 292922 are purchased as service replacement, a new retainer 292919 will be
required for each.
Some piece numbers will be noted in the chart which have not as yet been cataloged,
but will be in subsequent catalog revisions.
ASA
Manual
Slack
283411 6” 288853 289325 6” Straight 37 tooth 5/8-18 Freuhauf
278295
278294
278631
278632
101133
101290
286965
286740
101215
101289
289966
101214
101134
101289
286966
101214
277959
278321
288410
277959
278321
278325
278333
279316
278715
281777
281983
278014
278302 5-1/2/4-1/2” N.A. 101453
278312
278327
278334
278335
278705
280259
281984
282097
278010
278017
Manual
Arm Length ASA-1 ASA-2
5-1/2/4-1/2”
5-1/2/4-1/2”
5-1/2”
5-1/2”
6”/5”
6”/5”
6”/5”
6”/5”
6”/5”
6-1/2/5-1/2”
6-1/2/5-1/2”
6-1/2/5-1/2”
6-1/2/5-1/2”
6-1/2/5-1/2”
6-1/2/5-1/2”
6-1/2/5-1/2”
6-1/2/5-1/2”
6-1/2/5-1/2”
6-1/2”
6-1/2/5-1/2”
6-1/2/5-1/2”
5-1/2”
5-1/2”
5-1/2/4-1/2”
5-1/2”
5-1/2”
6-1/2/5-1/2”
6/5”
6”
6/5”
7/6”
6”
6/5”
6/5”
6”
6/5”
6/5”
288750
288751
287863
287864
287867
287868
287865
287866
287965
287966
287963
287964
287961
287962
289243
289244
289293
289294
289727
289728
--
--
--
--
289304
289305
289312
289313
289316
289317
289314
289315
289656
289657
289654
289655
101454
289741
289742
289306
289307
289748
289749
289746
289747
289652
289653
289933
289934
Arm
Length Offset Spline
5-1/2”
5-1/2”
6”
6”
6”
6”
6”
6-1/2”
6-1/2”
5-1/2”
5-1/2”
6-1/2”
6-1/2”
5-1/2”
5-1/2”
5-1/2”
5-1/2”
5-1/2”
5-1/2”
5-1/2”
5-1/2”
5-1/2”
5-1/2”
5-1/2”
6”
6”
6”
6”
6”
5-1/2”
5-1/2”
5-1/2”
5-1/2”
5-1/2”
5-1/2”
6”
6”
6”
6”
5/8” left
5/8” right
5/8” left
5/8” right
Straight
Straight
Straight 28 tooth
Straight 28 tooth
Straight 1-1/2 10C 5/8-18
Straight
Straight
Straight 1-1/2 10C 5/8-18
Straight 1-1/2 10C
5/8”
5/8”
Straight
Straight
Straight
Straight
Straight
Straight
Straight
Straight
1-1/4 10C
1-1/4 10C
1-1/4 10C
1-1/4 10C
28 tooth
Rockwell
Rockwell
Rockwell
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/4 10C
1-1/4 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
1-1/2 10C
28 tooth --- Includes
Adapter
Thread Remarks
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
5/8-18
--- Includes
1/2-20
1/2-20
5/8-18
5/8-18
--
--
ASA not
available
for 4-1/2”
arm
ASA not
available
for 5” arm
4-1/2” arm
ASA not
available
5” arm
ASA not
available
7” arm
ASA not
available
Yoke
292922
Includes
yoke
adapter
292756
90° grease
fitting
235342
Includes
yoke
292922 &
90° grease
fitting
yoke
292922 &
90° grease
fitting
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