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Rear Airbags, Brakes, etc
I’m in the process of changing the rear airbags, piggyback brake chambers and diaphragms, tag lift chamber diaphragms, inspecting & adjusting brake components, and lubing everything. I’m doing one side at a time. This thread is about the driver side. Things are easily accessible when all three wheels are removed. Here’s what I’ve found so far.
Someone? had done a bad job of changing the #36 diaphragm in the tag lifting chamber(see pic-old is left, new is right) so it leaked. I don’t ever raise my tag so it was no big deal to me.
With age rubber brake diaphragms become stiff and deformed. See the pic of the new vs old # 16s & 30s.80K miles and brake linings/pads have 75% of their life left in them.
Here are part#s for my bus.
Drive airbags = Prevost# 630104, GY# 1R11-088, $171ea + shipping + tax from Prevost
Steer & Tag airbags = Prevost# 630259, GY# 1R11-244, $162ea + shipping + tax from Prevost
Drive axle piggyback chamber = Haldex GP3036 $114ea, and type 30 diaphragm $5ea from finditparts.com, free shipping no tax
Tag axle piggyback chamber = Haldex GP1624 $99ea, and type 16 diaphragm $4ea from finditparts.com, free shipping no taxTag axle #36 lift chamber diaphragms from finditparts.com = $6.50 ea
Tag axle #36 lift chamber diaphragms from finditparts.com = $6.50 ea
Steer axle sevice brake chamber = NAPA HD30S, $24ea
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3 Replies
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Great post Don good catch
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Since I finished changing out all the piggybacks, brake chambers, and diaphragms, I’ve noticed that It doesn’t take as much pedal pressure to get the bus to stop. IMO, I think we should be changing out these items about as often as tires.
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Don I agree I change my brake cans every 5 years but some don’t agree , which is ok but not me , I change them at 5 years
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