Mo Murphy Posted November 24, 2013 Share Posted November 24, 2013 I'm going to need one shortly. What are people using for this purpose and what makes have you found to be reliable. I imagine I'll need a pressure switch and a solenoid too. Your recommendations Gentlemen. Mo Quote Link to comment Share on other sites More sharing options...
Nigelw Posted November 24, 2013 Share Posted November 24, 2013 Some of the guys here have good reports kn the Viair kit, Leon bought the full kit with reservoir and said it was a dream to fit with good clear instructions and all the bjts he needed. Others run an ARB compressor if just for the one diff. Quote Link to comment Share on other sites More sharing options...
Soren Frimodt Posted November 24, 2013 Share Posted November 24, 2013 On both my landies I run a cheapo twin cylinder paddocks unit with an ARB switch. Reason being that an ARB compressor are waay too expensive for what it is IMO and doesn't deliver much air if you have to air up your tyres. The twin cylinder on the other hand is very fast! And the oldest one I have is about 5 years old and has been mounted outside in all the elements for all its life, and still works a treat. Edit to say that you will of course need an air tank of some sort. This is included on the ARB compressors Quote Link to comment Share on other sites More sharing options...
Orgasmic Farmer Posted November 24, 2013 Share Posted November 24, 2013 I have the terrafirma single one (cost about £30), pressure switch from D44 (but can be had for about £10 off ebay) and a home made 1 litre tank to give a little bit of reserve (welded 2 ends onto a length of box and tapped it for an air fitting. Runs the Ashcroft locker fine and with the PCL fitting in the truck I can still pump up all 4 tyres with the air line. Quote Link to comment Share on other sites More sharing options...
specialbikejames Posted November 24, 2013 Share Posted November 24, 2013 I use a 'high output' ARB compressor- obviously runs the locker fine and ok for pumping up tyres. It would struggle if you air up and down a lot though. Don't really air down that much but the ARB got so hot pumping up 235 tyres the last time it melted the winch air free spool line! Quote Link to comment Share on other sites More sharing options...
landroversforever Posted November 24, 2013 Share Posted November 24, 2013 Would you be interested in an old-type ARB compressor Mo? I'm toying with getting rid of mine as I'm going O.B.A. in the rebuild. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted November 24, 2013 Author Share Posted November 24, 2013 Thanks for that gents. Ross pm me m8 Mo Quote Link to comment Share on other sites More sharing options...
landroversforever Posted November 24, 2013 Share Posted November 24, 2013 Will do sir. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted November 24, 2013 Share Posted November 24, 2013 Don't have much more than 85psi or you will blow the seals over time....Old arb compressors are v good imho stainless tank reliableBut not for airing up tyres ! Quote Link to comment Share on other sites More sharing options...
landroversforever Posted November 24, 2013 Share Posted November 24, 2013 Interesting Nige... I thought the ARB and ashcroft lockers used 90PSI? Quote Link to comment Share on other sites More sharing options...
Troll Hunter Posted November 25, 2013 Share Posted November 25, 2013 I've read on this forum that A/C compressors can be used for on-board air supply. Is this right or a load of porkies? If it's OK, what pressure and capacity do these systems give? Are they up to doing your tyres? Mike Quote Link to comment Share on other sites More sharing options...
mickeyw Posted November 25, 2013 Share Posted November 25, 2013 I use a serpentine type air con compressor for my OBA. Output even at tickover far exceeds that of an electric pump. My pressure shut off is 100 PSI. I have it connected to an old air sprung Rangey receiver, must be 4 litre, maybe more. Nige mentions the ARB pump seals not liking high pressures. I have a check valve (non return) fitted, which protects the pump from said residual pressure, and stops air loss in direction too. Quote Link to comment Share on other sites More sharing options...
Diff Posted November 25, 2013 Share Posted November 25, 2013 I've read on this forum that A/C compressors can be used for on-board air supply. Is this right or a load of porkies? If it's OK, what pressure and capacity do these systems give? Are they up to doing your tyres? Mike Plenty of info here including my set up: http://forums.lr4x4.com/index.php?showtopic=2527 http://forums.lr4x4.com/index.php?showtopic=2115 http://forums.lr4x4.com/index.php?showtopic=13723 Hope this helps, Regards, Diff. Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted November 25, 2013 Share Posted November 25, 2013 I've read on this forum that A/C compressors can be used for on-board air supply. Is this right or a load of porkies? If it's OK, what pressure and capacity do these systems give? Are they up to doing your tyres? Mike They work very nicely as air compressors. I just so happen to have one on eBay at the moment. 99p currently. http://www.ebay.co.uk/itm/200991403691 Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted November 25, 2013 Share Posted November 25, 2013 ...Nige mentions the ARB pump seals not liking high pressures. .... I thought he was referring to the seals in an ARB locker. Quote Link to comment Share on other sites More sharing options...
landroversforever Posted November 25, 2013 Share Posted November 25, 2013 I thought he was referring to the seals in an ARB locker. That's what I assumed. ARB seals in the locker are a weak point. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted November 25, 2013 Share Posted November 25, 2013 Here yer go ARB25112013_0000.pdf From the RD138 manual, .........pretty much all are the same 85 PSI is the minimum, and frankly works fine, any more risks blowing seals, 100+ will if its an older unit with some wear 85 is more than enough ...the later twin lip seals are better but still expensive and prone to air leaking The only good thing is seals can be changed relatively easily without stripping the diff, on all models the air seal holder comes away they are delicate and damage easily !! Nige Quote Link to comment Share on other sites More sharing options...
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