I have a 1984 GMC 70 Dump Truck with a 427 cubic in. gasoline eng. I am having problems keeping air pressure above 30. it takes at least 60 to release the brakes. I've scanned for leaks and have found nothing. All the hoses look good. I am not real familiar with the compressor though. What can i do to ensure that my compressor isn't bad ? I also would like to know can I override the brakes on one of the axles, since only the passenger side front set of wheels is locked?
2007-11-16 07:43:21 · 4 answers · asked by Sheila P 1 in Cars & Transportation ➔ Maintenance & Repairs
Have you diaphragm checked. But since most front axles don't use the traditional "spring drum" and really aren't easy to check yourself, I'd err on the side of caution and take it to a shop that services air brakes.
2007-11-16 08:09:29 · answer #1 · answered by Paul A 4 · 0⤊ 0⤋
Try replacing the air govenor about 15 to 30 bucks this will keep you from building air. another problem could be blown head gasket on compressor only about 6 bolts to change and won't lose any coolant.also if it is real cold you could have ice in lines stopping the air flow airbrake line antifreeze poured into the big line coming off the compressor should clear this.
2007-11-16 17:08:32 · answer #2 · answered by ctlyle43 3 · 0⤊ 0⤋
well you could pull the main hose off your compressor that runs to your drier and check how hard it is to keep your thumb over the hole chances are the compressor is bad or it could be your d-2 governor. put a valve in one of your air tank gussets that looks like a vavlve stem
2007-11-16 22:35:51 · answer #3 · answered by toby n 2 · 0⤊ 0⤋
Keep a portable air tank or nitrogen air tank with you that you can plug into the air lines to unlock the brakes. Other suggestions sound good.
2007-11-16 19:38:59 · answer #4 · answered by paul h 7 · 0⤊ 0⤋