Lmackattack

FJH set me up real good with my 285 mack, He explained how to get my little 6 cly to 25-28psi on good pulls and keep my egts from gong past 1100deg. this is without a front mout air to air (just an charge cooler) if that E9 cant get above 23 psi it may be the reason it has no balls? i have only driven a few V8 macks but i do know that in high range (gearbox)you should keep up with newer trucks with slightly more HP. As FJH said check the linkage. One of the superliners i drove had that junk air throttel and it always gave trouble the older and longer you drove it. is it possible that when the pushrods jumped that the engine hyd locked on a cyl? it may have blown out the Head gasket on that cyl and is now causing some other issue.if the valves were closed and fuel was being injected that can be a problem?? hope you find the problem. Trent

is the timeing off? i believe the maxidynes had diffrent timeing than the econdynes? as far as not walking off the line easy, it could be a few diffrent things... low speed idle set to low, wrong timeing(low power) problem in the gov box... Maxidynes made more TQ down low so this was lost when you switched parts around to a 350 set up. the 350s make there power around 1450RPM and up they tend to fall on there face around 1350RPM. if you say you have power loss up top and down low than i susspect timeing issues... that is if all your 350 parts are correct and your fuel and filters are fresh.

WOW, he shuts down early and just lets her slide in LOL!!!

the lines should break free with a 3/4? open end wrench. Its a tight spot but you can get in there.

the foot valve would be my 1st guess

WTF Volvo!?

I belive the econodynes had higher HP outputs but lower TQ rateings. they needed more gears to pull you as the power band was up top and not as wide as the maxidynes. I think they came in low rpm models and standard 2100 versions and they claim that they were better on fuel.? trentdsf

if you have the same pump it should.. be carefull as the 237 does not have any means to cool the intake air!!! watch the EGT guage closely!

try this Trent MackMechfuelpumpadjustments.doc

THE BOLT THAT HOLDS THE YOKE TO THE SHAFT MAY BE LOUSE OR BACKED OFF A BIT. BEST WAY TO CHECK IS TO REMOVE THE U JOINT AND TIGHTEN THE BOLT WITH AN AIR RATCHET. IF THAT BOLT COMES LOUSE IT GIVES THE BEARINGS SLACK AND THE PINION CAN MOVE A LITTLE. ALSO IF THERE WAS ALOT OF SLACK THE SEAL MAY BE BAD. LOOK FOR OIL LEAKS UNDER THAT YOKE AND CHECK YOUR DIFF OIL LEVEL JUST TO BE SAFE

Ok the rear rear diff is out. not a big job at all (the bolts were easy to remove ). hardest part was the U joint? anyways one thing that bothered me was the milky oil that came out. Just last year i flushed the diffs and last week topped it off with 1 gallon as it has been leaky. where does water get in from?? tomorrow i pick up the faster diffs and remove them from the axel housings..if they look good inside i think i will swap them in and see how the truck runs with them.. Trent

Congrats!!! gotta love those Mack Westerns :ttiwwop:

i would like a little less RPM out on the big roads. Currently i have 4.17 rears and i have the engine wound pretty hard to get to 60MPH i know its not bad for the engine to turn 2000-2100 but its getting old and times have changed. i have access to some 3.87 rears for cheep and they should get my RPM down or my road speeds up. i have driven a few 6 wheelers with 3.87s and i liked how top gear just cruised along at 55-60 MPH. i do get in the mud and rock pits and like to use the low hole to run the truck over soft grounds, saves on the clutch too! i never have been in a bind where the 4.17s and low low could not pull me out .the truck came with 3.87s as it was a road tractor when new. the last owner put the slowerrears in.. i need to reseal the rear rear diff as she leaks... now is the time to replace the rears whats good or bad between the 2 should i stay with the 4.17s or swap in the 3.87s? Thanks Trent

My hayward RS has a flathood? stumps me too

Rob I think this style latch was used up untill the early 80s? not shure but it looks as if my truck came with them as the door catch has no mods or extra holes... When they work right they are easy to open and close. but when they wear they are a pita to find the sweet spot... I have seen guys with late 60s R models that have this style and they work so well that your pinky can open the door inside and out. for me I have to pull hard on the inside and push my thumb hard on the outside... I did replace the passenger side latch and its still a little hard to use... Trent

the pic on the left Rob Trent

On my RS700 i have an older style latch set up(the one with the round latch end)that is always troublesome. to make it worse some of the bolts that hold the door catch have snaped off in the door frame. making it difficult to open/close as the catch moves around. is there any way to upgrade the latch system to the "current" R model style? It seams that the older latch set up is a PITA to keep it aligned and operating. the newer latch you can open with ease with just one finger. Or is there any easy way to set up my current latch system. I hate having to roll down the window and open the door from the out side!!!

I had a panel remade by a local guy. I aske him to freshing up the old one as it had tears at the bottom and around the crank/door latch handel. The bottom part has carpet and was in good shape so I just had him make the upper part. My main concern was to save the old dog logo and keep a stock look. I asked him to give it his best and I am 110% happy. he had some of the same blue leather in stock so he just used his stock to save me some $$ If you are intrested I will see if he can make more panels on an as needed basis. I belive he said $150-175 was what he would like for each panel. considering our options its not a bad deal. I told him I would bring in a rear cab and headliner panel to see if he can remake those as well? What do ya think? Thanks Trent

im 28 but have the same tast in music as most "older" (i use that term lightly!) folks. Floyd,Stones, the who, led zepplin, good steady beats for pulling them hills. I also like some of the later classic rock in the likes of ACDC,the police,sabbath,kis etc.. I was a 90s genaration kid so alternitive or grunge as some call it was popular. Alice in chains,Stone temple pilots,Metallica,Tom petty as long as its Rock, good blues, jazz and it holds a good rythem I can listen to it. I dislike rap and pop as its a joke to me. Theres no tallent involved to dub inyour voice behind an electric background drums guitar and bass. The "bling bling" rappers are the worst. how did we let that happen? trent

I remember seeing PAI offer old Quadbox parts and possible old 673 parts? I belive PAI is out of GA? do a search for them if Mack or anyone els no longer has your parts for the old dog

looks like a nice old dog i have only seen one of these in person and it was a mess of a truck. how popular were these?

looking real good Dan!! looks to be pretty much spot on to the movie truck..Now get the trailer ready and you will have a great combo Trent

What are some cool or diffrent mack parts that you liked back in the day but cant buy from dealers anymore. sorry B and R models dont count as Parts i liked the old logo red/green/white mudflaps.

"engines are made at the Volvo Powertrain Hagerstown, Md., factory" that sums it up for us!

Too far for me but congrats and get some pics of both trucks and girls for us