Losing air break pressure while ilding

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Goodguy88, May 30, 2017.

Page 2 of 2

May 30, 2017 #11

Goodguy88 Medium Load Member

470

139

May 8, 2017

0

Will try tonight. Thanks

Goodguy88, May 30, 2017

Goodguy88, May 30, 2017

#11
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May 30, 2017 #12

Bluefin60 Bobtail Member

4

3

May 30, 2017

0

Goodguy88 said: ↑

Will try tonight. Thanks
Click to expand...

Check the exhaust ports of the foot valve and relay valves near the axles.

Bluefin60, May 30, 2017

Bluefin60, May 30, 2017

#12
May 30, 2017 #13

ASE tech/mechanic Bobtail Member

12

3

May 8, 2017

0

Have you looked at the brake chamber's?build air pressure up,set brand's and do a walk around after you shut the truck off of course.if no leak,build pressure back up,open the door's,shut the truck off,maybe have another driver walk around while you hold the brake's.hopefully it's just a diaphram,even then full chamber or half is still pretty cheap.

ASE tech/mechanic, May 30, 2017

ASE tech/mechanic, May 30, 2017

#13