keithw Posted August 25, 2015 Share Posted August 25, 2015 Good moring all,We have just aquired a used 2005 Mack CV713 water truck and have an issue with it shutting down intermittantly. When it shuts down there is a symbol on the instrument panel that illuminates it looks like an arrow going clocwise in a circle with a X over it. I believe this should come on when water temerature is too high or oil pressure is to low ? i am not familiar at all with Mack trucks. When it shuts down all guages are at normal operating pressure and temp. Any Suggestions ? Also if anyone has a owners manual in PDF format for this year and model could you post a link for that as well. Thanks in advance for your help. Quote Link to comment Share on other sites More sharing options...
BGarofalo Posted August 26, 2015 Share Posted August 26, 2015 Sounds like it's an idle time shutdown. Should be able to change the time limits with a scan tool or use cruise control. Quote Link to comment Share on other sites More sharing options...
hatcity Posted August 26, 2015 Share Posted August 26, 2015 Like he^^^^^^^ said. If at idle and it shuts down, the computer is set that way. Comp. can be changed.OR, just hit the cruise and bump the idle up a bit.Shut down usually comes on for low water level, low oil pressure, high water temp Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment Share on other sites More sharing options...
keithw Posted August 26, 2015 Author Share Posted August 26, 2015 It's shutting down while running about 2000-3000 rpm. All of the temp and pressure gauges are good when it shuts down. Quote Link to comment Share on other sites More sharing options...
Dieselwrenches Posted August 27, 2015 Share Posted August 27, 2015 2000-3000 rpm? You sure about that? That's pretty fast for revs, meaning if it I'd actually shutting down between that range probably due to engine over speed. Quote Link to comment Share on other sites More sharing options...
keithw Posted August 27, 2015 Author Share Posted August 27, 2015 Good point. The driver said he was running it around 2500 to get maximum water output. I'll have him drop his rpm and see what happens. Quote Link to comment Share on other sites More sharing options...
Dirtymilkman Posted August 27, 2015 Share Posted August 27, 2015 Holy shit 1 Quote Link to comment Share on other sites More sharing options...
hatcity Posted August 27, 2015 Share Posted August 27, 2015 maybe the engine is warning you it's about to swap pistonsget a new driver...that aint no 6V71 that needs high rpms Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment Share on other sites More sharing options...
Dieselwrenches Posted August 28, 2015 Share Posted August 28, 2015 Yes I just saw an oversped motor clocked at 2954 rpm before throwing rod out the side of a block. Keep an eye on oil pressure. The first thing to go on an overboard is the gear on accessory shaft that runs oil pump. Quote Link to comment Share on other sites More sharing options...
tjc transport Posted August 29, 2015 Share Posted August 29, 2015 interesting he can get 2500 out of it, i thought these engines were goverened at 2200. 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 Share on other sites More sharing options...
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