Lozzatron Posted November 13, 2022 Share Posted November 13, 2022 G'day. I don't have any specific's, but would like to know if there is any known common faults causing the EM6-285 td in a military rm6866 not to start? There are a couple on auction that don't start, but that's all they will tell you. These trucks don't seem to have many miles on them so I'm thinking its more to do with being 40 years old? Also, say it needs a fuel pump or something, where's a good start to look for these old R series bits? Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/ Share on other sites More sharing options...
Solution tjc transport Posted November 13, 2022 Solution Share Posted November 13, 2022 On a mechanical engine the only thing would be no fuel, or no air. Or parts missing from the engine. 2 Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-514952 Share on other sites More sharing options...
Freightrain Posted November 14, 2022 Share Posted November 14, 2022 Transfer pump should be no problem to get. Two bolts and a couple lines to get it off. Does it have a primer pump on it? The two plastic check valves could be stuck on it from sitting. Easy to unscrew the pump and clean things up. Like Toms says...pretty simple to diagnose. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-515098 Share on other sites More sharing options...
Popular Post Lozzatron Posted November 21, 2022 Author Popular Post Share Posted November 21, 2022 Cheers Larry. I hope to get it home next week or the week after, and will check those parts. Here's hopefully the first pic of many. 3 Quote Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-515613 Share on other sites More sharing options...
DavCut Posted November 21, 2022 Share Posted November 21, 2022 Looks as if you have a lot to work with @Lozzatron! What are your plans for the truck? Dave Quote Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-515614 Share on other sites More sharing options...
Lozzatron Posted November 22, 2022 Author Share Posted November 22, 2022 Hopefully not too much work! I build mountain bike trails for a living so I will use it to cart diggers and skid steers around in the bush. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-515714 Share on other sites More sharing options...
Freightrain Posted November 22, 2022 Share Posted November 22, 2022 On 11/21/2022 at 6:47 AM, DavCut said: Looks as if you have a lot to work with @Lozzatron! Dave There's an understatement....LOL. Looks like a Beast! 2 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-515728 Share on other sites More sharing options...
Popular Post Lozzatron Posted January 5, 2023 Author Popular Post Share Posted January 5, 2023 The problem was a couple for fuel leaks, one under the cab in a fitting in the main fuel line and another on the injector return. Fuel was draining back and it was taking about 5 attempts to start. Runs great now. 6 Quote Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-520073 Share on other sites More sharing options...
Freightrain Posted January 5, 2023 Share Posted January 5, 2023 Good news! Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-520088 Share on other sites More sharing options...
yarnall Posted January 6, 2023 Share Posted January 6, 2023 That is quite a truck. Where are you building MTB trails? Mountain biking is my other hobby. Mike Quote Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-520112 Share on other sites More sharing options...
tjc transport Posted January 6, 2023 Share Posted January 6, 2023 he is down under Mike. Australia. Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-520145 Share on other sites More sharing options...
Freightrain Posted January 6, 2023 Share Posted January 6, 2023 20 minutes ago, tjc transport said: he is down under Mike. Australia. G'day........ 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-520148 Share on other sites More sharing options...
DavCut Posted January 7, 2023 Share Posted January 7, 2023 On 1/5/2023 at 9:57 AM, Lozzatron said: The problem was a couple for fuel leaks, one under the cab in a fitting in the main fuel line and another on the injector return. Fuel was draining back and it was taking about 5 attempts to start. Runs great now. Glad to hear that @Lozzatron. Now we need some more photos! Quote Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-520196 Share on other sites More sharing options...
Brocky Posted January 7, 2023 Share Posted January 7, 2023 Mike This gives you a good reason to take a trip Down Under!!!! Between this website:: https://www.hcvc.com.au/forum and Stephanie Vanatta, who built the ATHS Down Under Tour in 2015, we can build you a trip with many antique truck museums and people on it. Send me an email and I will send you her email contact.You have to schedule it for August 2025 to attend the big Australian National Show in Alice Springs.. 1 Quote Brocky Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-520250 Share on other sites More sharing options...
mowerman Posted January 10, 2023 Share Posted January 10, 2023 Wow that thing is badass missed this some how even the bed looks like a perfect design.. Bob Quote Link to comment https://www.bigmacktrucks.com/topic/70696-common-reason-a-rm6866-wont-start/#findComment-520782 Share on other sites More sharing options...
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