Lmackattack

a 2 stick 6 speed is realy a 5 speed with the option of a low first gear for extream off road or heavy hauling. the main box has 5 foward gears the aux has revers, Low and direct under normal use . you only shift the main stick (closest to your leg).1-2-3-4-5 the aux box stays in "Direct" If you are very heavy or in a hole and need to climb out you would put the aux or compound box into "low" and use the main in 1st. After the truck is out of the hole mud etc...and on flat level ground you would shift the aux box from "low" to "direct" accelarate then shift 2-3-4-5 with the main. So basicly its like splitting 1st gear in half with the aux box. this gives you 6 foward speeds. However the shift from "low" to "direct" has to be done carefully as if the truck is still climbing out of a hole you likely will miss shift as the slow road speed will fall very quick. I always let the truck get on flat ground bring the RPMs to 1600 or so and then make the shift. A B model with a 20 speed or 18 speed depending on what you want to call it "Quad box" shifts diffrently Its been a few years but I remember it like this the main. ( farthest from your leg). has 5 positions for foward and 1 for reverse the aux or compound box has 4 positions low low,low split,hi split, direct you start with Compound in low low/main in 1st shift main 2-3-4-5 grab both sticks/ move compound to low split and the main stick to 1st shift main 2-3-4 dont use 5th grab both sticks/move compound to hi split and main stick to 1st shift main 2-3-4-5 grab both sticks/ move compound to direct and main stick to 1st shift 2-3-4 dont use 5th I dont know why you cant use 5th in direct and low split but I heard the gears are spining to fast of the ratios are so close its useless to use those gears Trent

Wish my bulldog could pose like that

Thats the truck I saw Thanks for the pic. I for got about the trick windows. shure is in great shape for an old RS700 On the sleeper it had "cadillac mack" in some funky sticker or vinal decal Wold love to see some interior shots of this truck. Thanks again Trent

thanks for the great pics. looks like a good show to attend. whats under the hood of those small "mini" trucks.?? Trent

I agree Rob this truck looks like a plane jane cheep truck.. the dump body looks 100% better than the truck. I realy dont like the round frontal aera and the plastic fender extenders dont help prove macks vocatinal history. who is designing these trucks at mack? Do they ever ask the public what they think before production starts? I know car companys do. Give me a pad of paper and a pen, I will show you what a "truck" should look like... WAKE UP MACK!!!!! this truck is a sorry example of the great trucks mack once made. End of my rant Trent Blasco ..a.k.a pissed off mack fan

ok I took the pump to a local hyd shop and they said I can use the capped off port for a return line from the lowboy trailer. so... one line from the Hyd tank to the pump one line from the pump to the trailer (dump trailer or lowboy) one line from the trailer to the 2nd return port (lowboy only) I think all is good and will be ordering some hyd lines after I weld the fitting on the back side of the tank. next question.... I have a pto thats driven off the bottom coutershaft (not the side mount) I spoke with a member here and he thinks that the counter shaft may need to be replaced with a part that couples the pto to it? I have removed my cover but have no other countershaft to compair with? anyone know if all the 2 stick 6 speed countershaft ends are all the same? It was a little dark and could not see if it mounts in there so I will try tomorrow? thanks for all the help lots to learn still Trent

tell us all about the trip !!! and where are all those pics? Hope you got some for us never seen those rears in a mack?? seen rockwells befor but it was rare. hope everything is good trent

I dont have any tow hooks on my RS700 and might need some if I start to work the truck part time in construction. I have seen some people cut out the bumper near the frame rails to fit them. is there any way to make a brace from rail to rail and use the hole in the middle of the bumper (where you stand to open hood) i am not willing to cut up this perfect pumper. so I eather need to get a diffrent one or attache them where holes are already located.

Volvo sold there automobile company to ford. Volvos main focus was to compete in the truck market and off road construction machines. If im not mistaken they are almost as big as Cat if you consider the truck division I heard this is one of the big reasons they bought mack. knowing its a good vocational truck maker. times change faster than I change my work shirt so who knows if all this is still true

gatta love the color and yes It is a great looking cabover

staneless sounds good but I just bought a Lund visior last year because I could only find the metal ones from AU..and it would have been 3x the price to have it shipped here oh well would those fit a R model? I have seen some R models with metal visors as well??? Trent

welcome to the board.. those DMs are great work trucks local guy has a U model with a short WB single axel. Its equiped with his home made tool box/bed. it hauls all his supplys around for the brick paving company he owns.

you have the side mount IC. I think they call that engine a 300+? if thats the engine you have its an econydyne so it needs more gears than the maxidyne with 5 spds. Thats because the power band is near the upper rpms on econodynes, the E6300 has a front mount IC. both are simmilar in size and placement of componets. like others said it can be done but you will run into unexpected hurdles...I say go for it a 300 HP in a B model sounds like a fun truck to own.

repost from the ATHS board I have this used hyd pump that has (1) outlet and (2) return lines. Currently it was being used as a single line set up for a dump trailer. The 2nd return fitting is capped off. I want to make a 2 line set up for a low boy Can I use this pump for it ? Im not shure how the hyd lines run for a 2 line wetkit. someone said I need to use 2 return lines? any help is great

welcome to the board...this was a recent topic last week or so here is the link http://bigmacktrucks.invisionzone.com/inde...p?showtopic=335

the color looked like a DD Blue??? and the exhaust manafold was "slightly" diffrent from a stock E9 LOL Trent

great pics wish they came near Chicago I would love to see them pull. How did the macks do?? is that a V8 Detroit in that red superliner? I saw a pic with v exhaust pipes on one side under what looked like a mack fender? Thanks Trent

doesent sound good Dale... if there are no pipes over that aera it likely is a blown HG? I was just working on my 711 today had both valve covers off to paint and I did not notice any pipes/hoses there besides the injector lines. make shure you have a full radiator and check it wile its running to see if indeed the HG is leaking good luck Trent

Jon has the tip turbine 300+ and I think a 12 speed? I have the tip turbine 285 wth a 2 stick 6 spd Jons truck did pretty good in the pull, The best part of the event was seeing all the new petes and KWs get shut down buy old superliners Jon whens the next truck pull? I stoped over at Norther IL Mack a few times to see Lee, He had mentioned a few pulls before fall. glad you moved over to this site. Thanks for all the help and support at the truck pull keep in touch Trent

looking good barry!!! I will order one when I send the check for the door glass. whats the price for them size XL

I dont think quads were options after the late 60s. a BCR could easly have one and if you have a 673 with a quad. it might be an early R model from the late 60s early 70s? the late 70s had numbers like 686,685 etc... Check your vin number on the frame rail near the pass front wheel to see what the truck came with...if its for shure a 79, it very unlikely that the quad came from the factory. My B61 has a quad and 5.73 rears..thats good for about 62 mph trent

MAX SPEED 36MPH!!!! you need some diffrent rearends LOL... thats still a good MPG for such a slow speed.

sounds like some wires are crossed. Im no expert but when i messed with my 12/24 volt system (3 years ago) It was a little tricky to follow. if the s/p switch is sparking I would not try to start the truck as it may burn it up. hook up the amp gauge and see if it gives a reading. I belive if it shows a discharge the wires are crossed on the gauge or hooked up backwards on the gen. if you have a discharge and the wires to the gauge are correct look for crossed wires at the regulater. hopefully thats all that is wrong. p.s I have a S/P if you burn your up....LOL Someone with more experince chime in please!!!

welcome to the board...lots of good people here to help and BS with. love to see that pic you talked about

dont feel bad we all are good a certain things is all that you removed was the regulater and genarator? do you get a volt reading with the dash gauge? does the series parallel switch "click" when the ign is turned?