paul 111

Truck runs perfect, according to handbook in truck the central warning stop lamp will only come on if .overvoltage .air pressure system too low .coolant temp too high .oil pressure too low .cab not locked Light is always on as soon as engine is started along with ABS, engine and air light.

This is not about a Mack as i could get no replys on other forums, We have a DAF cf 85 430 hp and the engine light , ABS light, air pressure light and big stop light in centre of dash is always on. Done some research in the manual and air pressure light will come on if pressure is too high in turn activating the red stop light on dash, we replaced the air receiver dryer filter which was clogged full of #### and still the pressure is cutting out at 10.5 bar and leaking back down to 8 bar , i dont know wat pressure these european trucks are set at but all others are usually 800 kpa or 8 bar, cant locate governor valve either, i think it is in the receiver dryer , any ideas or know of anyone that may help as we had kenworth and electricians look at it and still no good and sorry to get off the mack subject everybody

Any one know about these turbo numbers on this motor, i have a number xjm0024 466220-9001 just wondering if it is the correct turbo for the 300 HP engine

Thanks for all the replys, today we just had a new 18 speed roadranger in truck as old one was a 8 speed and only went 90 flat out,not good for engine, done a couple of loads and went back to shed and had a tinker. The fuel pump is a Ambac Model 300 PLM 450276 ser no 042461 Mack part no. 5163 P2, 22 degrees BTDC. Now did some looking at old motor in shed as they are supposed to be the same and is a EM6 300, federal family 14, 1988 model could not find a compliance plate on one in truck behind the injector pump, will have to give engine a wash and look for a eng no and source from there. The helicoil in housing where puff limiter screws into came out so i put a new helicoil in, we have a new round housing which puff limiter screws into but looks like a big job to replace this part as pump needs to be moved back to get in there. Now the "PLE" no on pump is 1022, is this 1022mm?? I am abit comfused here, I measured with 60 PSI the travel on puff limiter ram,from end of push rod to start of thread housing measured 17.5mm, how do i figure out shim packing from here 1022mm-17.5mm =1004.5mm???is this correct anyone sounds like alot of shims ,i put in with 2 thin washers and left it at that for now prob about 2mm thick. I checked all intercooler pipes and hoses and replaced one hose which was leaking. The next day or two i will start when cold with fan belts disconnected and check to get a better look at pipes, hoses and intercooler for leaks without the fan blowing all the soapy water everwhere. I will also check number on turbo as kav suggested and may have to rig up a boost guage in dash. Took truck for a drive and performed a little better with less smoke but still reckon turbo boost is the problem. See how it responds with a load on it. Thanks everybody great job, any other comments or suggestions more than welcome.

Hello gear box,maybe if you put your blog in the cab paint and interior forum you will get alot more replys,if you do a google search with as many words as you can pointing to what you need you usually get something close enough to where you can find more info on it, good luck with the truck

This engine was bought in Australia about ten years ago, we have two of them and the other one is sitting in shed, meant to be gutless and worn out.Im not sure if this engine is a true export i will look at numbers on pump and let you know, supposed to be a 350 HP, do you guys know how to tell what HP it is because it is very slow when going up a hill with 42.5 ton on, alot slower than a old 350 cat or cummins , even when tipper bins are empty it struggles. Emissions are not too bad over here, just this truck when you get going just pours black smoke out with puff limiter disconnected, i would like to put it back in as this will put fuel in sump, use excess diesel and unwanted wear as yous pointed out.

Thanks alot for the replys, you blokes are great, i will give it a shot and get back to you in the next coupla days. Great work

I have been looking on here and diesel garage and found some very useful information about the EM 6 engine from fred and mackattack, great job. The only question i would like to know does anyone know how to shim the puff limiter properly and the steps involved as ours is very very gutless with puff limiter in

You can lower or raise the bags by adjusting the rod on the air bag control valve, you can lower or raise the bags as long as the slip yoke spline is not exposed, check the balance weights on tail shaft, unis and pinions for movement,could also be a faulty or worn innertube in tail shaft and as for bags being full the truck should sit level

Hello all, i am new to this site and it all is very helpful. I am from Australia and we have a Kenworth T300 with a Mack em 6 motor in it carting mainly rock with a max weight of 42.5 ton, its supposed to be 350 HP but i reckon it only pulls 200 HP.We have had alot of trouble with the puff limiter in front of injector pump as the thread was stripped out of it. When you put the puff limiter in its gutless but when its removed it goes alot better but pours out black smoke and for a 350 HP motor it should go alot better. Does any one know anything about these engines as to how to set up the pump to give motor max horsepower with limited smoke or any other recomendations that could be giving it lack of power. Any help would be greatly appreciated.