DI-PRO offers both automatic and manual slack adjusters to fit a variety of truck and trailer applications.

The DI-PRO Automatic Slack Adjuster is based on a clearance sensing principle design which is the standard choice of most Original Equipment Manufacturers in North America. It is interchangeable with the majority of automatic slacks adjusters currently in service and in the appropriate configuration, can be used on all applications with S-cam brakes.

  • Various Slack Adjusters are available to fit a wide range of trailer, truck, and transit applications.
  • DI-PRO ASA’s can be wound back easily allowing the brakes to be serviced and are well sealed against dirt and moisture.
  • Correct functioning of our ASA’s is easy to check and confirm when installed.
  • All slack adjusters are supplied boxed as single units with full fitting instructions included.
  • Fixing brackets and lining wear indicators are supplied and included as appropriate.
  • Tested and certified to SAE J1462 as well as ABE through TÜV.

Automatic Slack Adjusters

PART#
OE PART#
SPLINE
ANGLE
HOLES
61000

400-10141, E-6927B

1.5" - 28
34 degree
5.5" & 6.5"
61005
400-10305, E-6933
1.5" - 28
35 degree
6.0"
61010
400-10306, E-6928
1.5" - 10
35 degree
6.0"
61015
400-10212, E-6942
1.5" - 28
0 degree
6.0"
61020
400-10214, E-6946
1.625" - 37
0 degree
6.0"
61025
400-10216, E-6936
1.5" - 10
0 degree
6.0"
61030
400-10144, E-6918A
1.5" - 28
16 degree
6.0"
61035
400-10211, E-6944
1.5" - 28
0 degree
5.5"
61040
400-10215 E-6940
1.5" - 10
0 degree
5.5"
61045
400-10143 E-6924B
1.5" - 10
34 degree
5.5" & 6.5"
61050
400-10142 E-6923B
1.5" - 10
34 degree
5.0" & 6.0"
61055
400-10140 E-6925B
1.5" - 28
34 degree
5.0" & 6.0"

 
For those applications that an automatic slack adjuster just won't work, try a DI-PRO Manual Slack Adjuster.
  • Various Slack Adjusters are available to fit a wide range of trailer, truck, and transit applications.
  • Coated for protection against rust, moisture and various other contaminants.
  • All slack adjuster are supplied boxed as single units with full fitting instructions included.
  • Tested and certified to SAE J1462 as well as ABE through TÜV.

 

Manual Slack Adjusters

PART#
OE PART#
SPLINE
ANGLE
HOLES
62000

278323, KN47001
E-612-BK, R822000, 05-203

1.5" - 10
Straight
5.0", 6.0" & 7.0"
62005
KN47071, E -2458-BK
R822003, 05-262
1.5" - 28
Straight
5.0", 6.0" & 7.0"
62010
283411, KN44041
E-1574-BK, R822007, 05-240
1.625" - 27
Straight
6.0"
62015
278321, KN47011
E-940-BK, R822001, 05-201
1.5" - 10
Straight
5.5" & 6.5"
62020
288753, KN44061
E-2459-BK, R822004, 05-237
1.5" - 28
Straight
5.5" & 6.5"

 

Warranty

DI-PRO warrants the automatic slack adjusters to be free of faults arising from either imperfect material or workmanship for the period and mileage indicated in the following table:

Application
Maximum Time
Maximum Distance
Trailer
6 Years

750,000 miles
On Highway - Truck - Line Haul
6 Years
750,000 miles
Severe Service - Bus - City Delivery - Refuge
2 Years
100,000 miles


* The warranty period runs from the date of manufacture, as indicated on the cover plate (see illustration below).

Please note: that the Automatic Slack Adjuster cannot compensate for other deficiencies within the braking system. Therefore before returning a unit check...

...that it is installed correctly
...for loose wheel bearings
...for binding camshafts
...for worn/missing brake return springs
...for defective brake chambers
...for worn cam bushes and bearings

Conditions of Warranty

  • Any claim must be made within the period of the warranty
  • The failed unit must be returned to DI-PRO for full inspection.
  • DI-PRO will replace the failed unit free of charge if the claim is found to be valid.
  • DI-PRO does not accept any liability for any consequential losses arising from the failure of a unit, except in as much as it is proved that they are guilty of gross negligence.