rider10099 Posted January 16, 2016 Report Share Posted January 16, 2016 Started my 2001 Volvo 610 up for its monthly run. Started fine, but no air. Needles never moved off zero. Ideas suggestions where to look would be great. Cheers John Link to comment Share on other sites More sharing options...
skp51443 Posted January 16, 2016 Report Share Posted January 16, 2016 Below freezing? Look for low spots in the air system that might have an ice plug. A bit of heat will open most plugs in your lines up, a hair dryer is plenty. Link to comment Share on other sites More sharing options...
RoosterBooster Posted January 17, 2016 Report Share Posted January 17, 2016 i second that the air governor (or compressor un-loader) would be my first guess a little heat (if its below freezing) and/or a light tap with a (small ) hammer does sometimes wonders to all kinds of stubborn things Link to comment Share on other sites More sharing options...
OldFlySwatter Posted January 17, 2016 Report Share Posted January 17, 2016 Hi John, I have a 99 model 610 with a Cummins so I can't say exactly how your truck air system is plumbed. If yours is anything like mine, I'm thinking you should have an approx. 3/4" flexible line leading from your air compressor. The compressor is mounted on side of your engine near the front. With your engine idling, you can crack open this large air line fitting at the compressor. If your air governor is working and telling the compressor to pump air, you'll get lots of air spewing from this fitting. If no air here... then suspect air governor, or possibly bad compressor. (Let's hope not this). The air governor is an easy and cheap fix. (See youtube videos) If you've got good air at compressor... follow this large line down under the truck to your frame mounted air drier. Crack open this line where it goes into the drier (the thing that looks like a large upside down spin-on oil filter). If you're not getting a lot of air out here then you know this main line is stopped up. Look at this line closely to make sure it runs down at a fairly straight angle from up at the compressor. If it has any pronounced dips in it, this is likely where condensation has accumulated and is now frozen and stopped up the line. If compressed air is getting to the air drier, crack open the fitting on the large line leaving the air drier and check for air leaving the drier and going over to your "wet tank". If no high pressure air leaving the drier.... then either your drier is frozen with too much trapped moisture or has just gone bad. These are the first steps we always take here in the Kentucky coalfields in Winter to troubleshoot the dreaded "No Air At Startup" after the trucks have sat overnight in freezing weather. I've never looked at the Volvo ved engine, but it shouldn't be too different from the Cummins, Macks, and Cats around here. Hope this helps you troubleshoot your problem. Now if you tell me your truck is somewhere nice and warm and it can't be ice.... forget everything I just said. Ed Link to comment Share on other sites More sharing options...
rider10099 Posted January 17, 2016 Author Report Share Posted January 17, 2016 Will start trouble shooting tomorrow - not freezing here but pouring rain so hoping it will be a little dryer tomorrow. Thanks for your tips gives me a good start. Link to comment Share on other sites More sharing options...
RandyA Posted January 20, 2016 Report Share Posted January 20, 2016 John, I sincerely hope it is something simple. But, I had the same issue this summer and ended up replacing the compressor. The problem was in the compressor head (valve body) but time, rebuilding, etc. made it easier to just put on a new compressor. On the D12 you have a steel line from the compressor that comes around the front of the engine and runs to the back on the driver's side. It is all in plain view. On that steel line is a valve where you can check for air pressure. If the compressor is OK regardless of what else may be wrong you WILL have pressure on the steel line at the valve. No pressure...... well, that ain't good. Link to comment Share on other sites More sharing options...
rider10099 Posted June 12, 2016 Author Report Share Posted June 12, 2016 For a variety of health reasons I was only able to crawl around the truck yesterday. Started it and could hear air leaking. This is what I found see picture -what's missing? Link to comment Share on other sites More sharing options...
rider10099 Posted June 12, 2016 Author Report Share Posted June 12, 2016 Okay can't get picture to attach. There appears to be a filter completely missing. Located near the 3 air tanks near the drive line. Link to comment Share on other sites More sharing options...
Rick & Alana Posted June 12, 2016 Report Share Posted June 12, 2016 Without a picture it's a guess but your air dryer could be in that area and does look like a very large filter. Keep in mind most air dryers get the signal to purge from the air governor. As suggested look at your air governor or just replace it first. They should be less than 20 bucks new. Link to comment Share on other sites More sharing options...
Big5er Posted June 12, 2016 Report Share Posted June 12, 2016 John, email me the picture and I will post it for you. carp4339 at yahoo dot com Link to comment Share on other sites More sharing options...
Ronbo Posted June 12, 2016 Report Share Posted June 12, 2016 The picture is what's missing. Find the picture and your leak will go away. Link to comment Share on other sites More sharing options...
rider10099 Posted June 23, 2016 Author Report Share Posted June 23, 2016 It was the air purge valve at the bottom of the air dryer. Changed it out and great air! Link to comment Share on other sites More sharing options...
Big5er Posted June 24, 2016 Report Share Posted June 24, 2016 Sweet. Glad ya got it fixed. Link to comment Share on other sites More sharing options...
I'mdonewiththis forum Posted June 24, 2016 Report Share Posted June 24, 2016 Glad it was something fairly simple! Link to comment Share on other sites More sharing options...
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