brakes
#1
09-03-2007, 07:29 PM
brakes
do you adjust trailer brakes at the same time when you do the truck
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#2
09-03-2007, 10:34 PM
You "check" them, you don't "adjust" them - unless it is a very old trailer or tractor with manual adjusters. Automatic adjusters have been standard since 1990 or so? If an automatic adjuster is out-of-adjustment it needs to be rebuilt or replaced - "adjusting" it is just masking the real problem and it will probably be out again in a couple days (or hours!) ...
#3
09-03-2007, 11:20 PM
You can adjust automatic slack adjusters but its a pointless exercise unless the adjuster isn't working or DOT is running a safety blitz and you want to make sure your brakes are "snug".
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#4
09-03-2007, 11:42 PM
Where I work, whenever I have a truck in for PM, I'll manually adjust the brakes just to be sure that they're within spec.
And if I find one that is "way out" of adjustment, then the auto slack gets replaced.
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If you can't shift it smoothly, you shouldn't be driving it.
#5
09-04-2007, 03:49 AM
Originally Posted by Splitshifter
Where I work, whenever I have a truck in for PM, I'll manually adjust the brakes just to be sure that they're within spec.
And if I find one that is "way out" of adjustment, then the auto slack gets replaced. We have to check and adjust the slacks, manual or not :roll: Of course, the way vocational trucks run through brakes, it probably isnt a bad thing lol
#6
09-04-2007, 04:43 AM
Originally Posted by Splitshifter
I'll manually adjust the brakes just to be sure that they're within spec.
If you have automatic slacks, and you check them and they're not adjusting correctly, they get tossed. You do NOT adjust auto slacks. If they're out of spec, there's something wrong with the system and they need to be REPLACED.
#7
09-04-2007, 07:05 AM
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Not sure if this is correct but this is what I was told.
Get on a hill and roll backwards tapping the brakes to cause the trailer slack adjusters to adjust. Step on the brake up to 90 psi application to cause the truck slack adjusters to adjust. Is this correct?
#8
09-04-2007, 10:24 AM
Originally Posted by allan5oh
Originally Posted by Splitshifter
I'll manually adjust the brakes just to be sure that they're within spec.
If you have automatic slacks, and you check them and they're not adjusting correctly, they get tossed. You do NOT adjust auto slacks. If they're out of spec, there's something wrong with the system and they need to be REPLACED.
And if I find one that is "way out" of adjustment, then the auto slack gets replaced.
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If you can't shift it smoothly, you shouldn't be driving it.
#9
09-04-2007, 10:27 AM
Originally Posted by SteveBooth
Not sure if this is correct but this is what I was told.
Get on a hill and roll backwards tapping the brakes to cause the trailer slack adjusters to adjust. Step on the brake up to 90 psi application to cause the truck slack adjusters to adjust. Is this correct? It makes no difference whether the truck or trailer is stationary or moving forward or backward. The brake application in reverse thing is for 4 wheelers.
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If you can't shift it smoothly, you shouldn't be driving it.
#10
09-04-2007, 04:30 PM
Originally Posted by Splitshifter
Evidently you missed the second sentence in my post Allan:
And if I find one that is "way out" of adjustment, then the auto slack gets replaced.
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