Author	[Modern View]
JPFL 01-10-2013 19:00:13 173.65.222.172 Report to Moderator	New to me 70LP, have not gotten a service manual yet. Does the LP come in close contact with the cooling system? I am getting coolant from the round diaphram between the fuel valve and the manifold. Thanks in advance for any info. Jim [Reply]   [No Email]
styled deeres 01-12-2013 02:44:59 108.231.204.111 Report to Moderator	Re: JD70 LP question in reply to JPFL, 01-10-2013 19:00:13   HUGH could I get the phone # for that place please I cant seem to get rebuild kits for the M-4 converters for my 620s &720s.I tried Nick BERBIERI and Davenport no luck. [Reply]  [No Email]
JPFL 01-17-2013 17:41:21 173.65.222.172 Report to Moderator	Re: JD70 LP question in reply to styled deeres, 01-12-2013 02:44:59   Styled Deeres, I had my vaporizer rebuilt by a local LP man and he replaced my M-4 with a M-5, he had a kit for my M4 but it was beyond repair.So he rebuilt a M5 for my tractor. Let me know if you still need a kit??? Jim 813--------- [Reply]  [No Email]
Dalet 01-12-2013 07:12:10 184.94.141.146 Report to Moderator	Re: JD70 LP question in reply to styled deeres, 01-12-2013 02:44:59   http://www.carbturbo.com/ This post was edited by Dalet at 07:12:28 01/12/13. [Reply]  [No Email]
Dan in North Houston 01-11-2013 04:40:00 216.136.87.146 Report to Moderator	Re: JD70 LP question in reply to JPFL, 01-10-2013 19:00:13   Which manual have you ordered? I have a 630LP and the deere service manual for the 630 (SM2008 for the 60 series) doesn't have much on the LP system. There is a separate service manual for the LP gas tractors - SM-2015 "LP-Gas equipment for John Deere Tractors". It has the details that you are looking for. [Reply]  [No Email]
JPFL 01-12-2013 07:14:39 173.65.222.172 Report to Moderator	Re: JD70 LP question in reply to Dan in North Houston, 01-11-2013 04:40:00   Dan, I got in touch with JD customer services and a young lady e-mailed me a manual on 70 JD LP-gas instructions (# OMR2050 D3) that helped a lot. It did not go into rebuilding the vaporizer, said to send to JD dealer for repair. So I am still looking, I tried to contact Century Gas Equipment in Lynwood CA. I will try again Mon to contact them. The vaporizer is a model "M". Thanks for the help. Jim 813--------- [Reply]  [No Email]
Hugh McKinney 01-10-2013 20:50:33 75.106.0.39 Report to Moderator	Re: JD70 LP question in reply to JPFL, 01-10-2013 19:00:13   I have got a 70 LP and I recently had the exact same experience. It turned out that the aluminum passages through the Century vaporizer/regulator had developed pits where the gasket surfaces should not have any. By the way, no, there should not be any direct contact between the propane and the antifreeze/coolant. What I did, that fixed my problem is, I got about ten sheets of 120 grit sandpaper, and sanded both the body of the regulator/vaporizer and the cover (the one that doubles as a mounting plate to the bracket on the tractor) , until it they were really flat. I also used a little JB Weld to speed things up. I did it about 5 months ago, and after installing a new kit from Carb & Turbo Systems, it has performed flawlessly. Good luck, and be persistent, it's not rocket science, it just takes a lot of effort to sand it really flat and make it leak-proof. Hugh [Reply]  [No Email]
NEIADan 01-10-2013 19:17:22 166.181.3.246 Report to Moderator	Re: JD70 LP question in reply to JPFL, 01-10-2013 19:00:13   It sounds like you are talking about the vaporizer. On the one side you have a diaghram that open and closes to match the vacuum of your intake. On the other side you have coolant circulating through a circular honeycomb and liquid propane in separate valley. The idea is to use the heat from the coolant to preheat the lp to a vapor in correlation with the diaghram of going from high pressure to a lower pressure in the intake providing the most vaporization of the lp. Those aluminum vaporizers are easily damaged allowing anti freeze to leak. often taking it apart and resurfacing the aluminum comb and plate with a new gasket and sealant it can be remedied. [Reply]  [No Email]
JPFL 01-10-2013 19:26:18 173.65.222.172 Report to Moderator	Re: JD70 LP question in reply to NEIADan, 01-10-2013 19:17:22   Thanks Dan, I will need to wait until manual comes. Jim [Reply]  [No Email]