TechnicalBulletin
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.
