Where is everyone #5
Discussion in 'Flatbed Trucking Forum' started by DDlighttruck, Aug 27, 2017.
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exhausted379, Tall Mike, cke and 6 others Thank this.
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cke, singlescrewshaker, 1951 ford and 2 others Thank this.
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exhausted379, Tall Mike, cke and 7 others Thank this. -
Tall Mike, cke, singlescrewshaker and 4 others Thank this.
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exhausted379, Tall Mike, Swine hauler and 6 others Thank this.
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Try pulling the clevis pin and see what moves the easiest by hand, pulling the rod out or moving the s-cam. While you’re at it check for slop in the s-cam bushings.
Looking at the picture ya posted, look to the left of the s-cam bushing it looks shiny.... a sign of lack of grease and possible worn out bushings.
Slight chance of it being the slack adjuster. But generally when they fail they back the brake off, that is unless they start seizing due to a lack of grease.
Every time I’ve seen this problem it’s been cammed over or not greased. But since ya said the brakes are nearly new they won’t cam over. On brake chambers I’ve seen diaphragms give up or the housing break due to rust and even the mounting studs break out of the can but I have yet to see a broken spring. But hey I ain’t seen everything.whoopNride, 1951 ford, Tall Mike and 7 others Thank this. -
My thought is the park brake spring could be broken and is offering no resistance to the rod moving in when tightening the adjuster.
These plates with the slot in them were loose from the axle. That's what brought this to my attention.
3 put of 4 were either loose or not attached at all to the axle. One of them I was able to get lined up and put new bolts in without touching the adjuster. The other 2 I had to loosen the adjuster all the way out in order to get the holes lined up.
Once lined up and tight I went to adjust the brakes and noticed the pushrod on the can moving in instead of the adjuster pushing the shoes against the drums.
My confusion is that the pushrod shouldn't move at all when adjusting the brakes, at least not until the shoes touch the drums and at that point the adjuster shouldn't turn any more.
I'll attach the pics of both a correct and incorrect mounted bushing so you can see what I mean I had to do.1951 ford, Tall Mike, Swine hauler and 4 others Thank this. -
wore out, 1951 ford, Swine hauler and 6 others Thank this.
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God to see you Tony. Been awhile.exhausted379, 1951 ford, tony97905 and 6 others Thank this. -
That slot has nothing to do with those slack adjusters they are for a different style adjuster. They are merely holding the inner s-cam bushing in place.
This also tells me it ain’t been greased in a long time. Ya don’t get that many bolts backing out quickly and it would be easily seen when greasing.
The park brake spring will push the rod out not pull it in to the can.1951 ford, jamespmack, Tall Mike and 5 others Thank this.
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