Lmackattack

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

To pull the head remove the rockershaft, evenly lousen the bolts to relive the valve spring tension. pull the pushrods out and undo the head bolts. If everything is removed off the intake or exhaust it should come off. Or if your "old school" you can pull both heads off with the Intake, exhaust still bolted to the heads ...just bring a hoist and pull the top of the engine off in one pice !

Welcome to the site It varies state to state regarding CDL and antique trucks. In some states an antique plated truck can be drive with out a CDL but some states may require it if it has air brakes or is over said weight etc.. check with you local state laws.. Most of us here consider it a good idea just to have a CDL for that one cop that may hasel you and confuses you as a comercial truck and not antique. I have heard of only a few people getting hastled hauling a trailer with other antiques on it... I have never weighed my B model but my R model is 15,500 likely a little heavier than the B? Its getting harder to find B models out in the open but the internet makes up for it. hope you find a good project Trent

Thad you can still get the lines from mack. I just bought new injectors and lines a few months backfor my 285. like said above some injectors used diffrent styles of feed and return methods so check befor you buy. But I do think that the injector line routings from ENDT673 / 237s /285s etc... are all the same. havent looked real close but they look all the same?????

thad the air compressor is water cooled and oil lubed. as said before when you put the air compressor back on check to see if ther is a little hollow tube that is in the spline (love joy coupling) in the acc drive housing. this is where the compressor gets its oiling to the rod and crank journals on in the air compressor. the oil return will flow out of the compressors crank case and back down into the engine pan. I was able to get my fuel filter replaced at NAPA. Simply remove the hose on top and unscrew the top nut off the canister. after the cap is off I belive the filter slides out. There should be a rubber o-ring under the cap to seal the housing. I also was able to get a new oil filter from Napa... the primer pumps always rust. You can remove them and soak in PB blaster and see if that helps. Most of the time you need to dissasamble it and clean it up. or buy a new one as I think they have an updated version. Trent

THOSE ARE SOME GREAT LOOKING MACKS

the E9 (V8) had a engine brake set up option. not shure if they are still availible from mack? The V8s have a diffrent exhaust note than the 6 cyls and yes they do sound like they are miss fireing. I never liked the flutter sound but many others do. If you dont have a vibration im shure its running fine. The one thing I do like about them E9s is the power that they had. Compared to todays engines a good running E9 can still pull with the best of them. I belive in the US 500HP was the highest rated E9 availible. over in the out back they had higher HP ratings so if your still not happy at 400HP you could easly squeez some more power out of your "de-tuned" 400HP E9 Welcome to the site

Sorry to hear of your friend. thats never a good thing to deal with.. You were 5 mins from my house when you stopped in Lakemoor would have invited you over for a quick chat before you hit the road. The engine sounds like it has been sitting. to pull the injectors I would almost say you will need the slide hammer to get them out. They are a real PITA if they rust up a little.

Joe. my friend and I will be there with "Last Call". We may have another guy coming with his R model if he has the time Thanks Trent