Walt1967

Hi guys.currently looking at a 2001 Mack ch truck has a 427 Mack engine w/18 speed Mack,and Mack rears. will this motor hold up to pulling 154000 gross,(gravel trains in michigan).has 296000 miles right now.truck has double frame heavy front also.is it comparable to a 425 cat? Or something else.

This is the older 13 speed correct?i think it has a .85 last gear.60-65 is good for me,but how many rpms. will it be turning.it has 11 r 22.5 low pros now but I can  Change them out to 11r22.5.thanks for input

Hi again everyone ,I am  looking to purchase a 1993 cl 713 Mack .it has a 425 cat,13 speed and 4.42 Mack rears on camelback springs. is this a good set up to pull Michigan gravel trains.(grossing 154000). My concern is that it won't go fast on freeway.are the 4.42s to steep? Truck is original to my knowledge.

Hi guys I have a problem.there  is a nice Mack  I want to buy but I think it's gonna be to slow.the truck is 1993 cl series with a 425 cat 13 speed rtlo14713 b.it has 4.42 rears.how fast will this truck go with 11r22.5,295.22.5 low pros,or 11r24.5 tires .the speedo is not working right now and it has the 295 22.5 low pros on it now.any info would be helpful thanks

I have a 91 super liner w/ dual steering what is proper power steering fluid seeing how I never had to add now that I have a leaking hose to replace thanks.

Maybe someone can help.i have a 91 superliner w/13 speed Eaton  fuller.i replaced speedo cable it was broke ,speedometer still don't work.to test if cable is working can't you drive truck with cable disconnected from speedo and see if it's turning. Can the piece connected to trans be bad? I also replaced plastic tip that goes in trans.i can turn it from inside truck w/hand so I know it's free.

Hi everyone,was changing a light on fuel gauge in dash today, screwdriver hit the the Hotwire and blew all dash lights.i know there is a fusebox that looks like a glove box on right passenger side.any other suggestions would be helpful ,thanks.

Hello guys have a 91 superliner with 160,000 original miles.i was driving the truck 2 days ago and the front rear end started making a noise like ball bearings were swishing around in there.they are mack 44,000 rears on camelback,with 4:42 gears. Are mack rear ends prone to have problems that eaton,Rockwell don't.repair shop hasn't taken it apart yet.thanks for replies.

Hi everyone I have a fuel filter question.91 mack superliner has a 425 cat. Primary fuel /water separator filter did not have a drain valve on it,neither did secondary fuel filter have one when I bought truck.mack dealer sells water/separator filters as does fleetpride without drain valve.i did find a luberfiner filter that did have a drain valve on it.my question is where does water go if you don't have drain valve.is the filter split so water can drain down? Which is the better filter?

I have 44k camelback rears. Just had suspension totally rebushed about a month ago at mack dealer.is there an alignment for this because I was looking at suspension today and the tandems look out of alignment.it has rubber bushings not brass.nothing seems loose.does the trunion need grease on tube?or is this stationary. The reason I asked about alignment is because rubber blocks and bushings fit into place, and it seems like you just torque down bolts.

If 4th and 5th are turned around how much faster will it go?

How much does it cost to switch rear gears?

is there a 13speed transmission that can be swapped out in 91 superliner.it has a 14613b eaton fuller w/425 cat and 4.42 rears.truck pulls good, but tops out around 60 or so mph.looking maybe for a little more legs.i know you can swap tires but just wondering if there is a trans to get more speed

Was told today by mechanic that mack rears have 2 to 3 drain plugs or checking points for different parts of rears.is it true that oil from top of rear can leak down and overfill bottom of rear,and you have to drain excess oil every so often. First time having Mack rears so input would be appreciated.they are 44k camels on 91 superliner.

How does the mack v8 compare to newer cat 475 hp, cummins n14 460 hp,electronic motors. I understand it might not be efficient like these but will it pull with them.

I have a 1991 superliner with Dayton rims.what is the proper torque for the lug nuts.i was told around 300-400 lbs using a 1/2 inch air gun.i don't know but it kinda makes sense seeing how the studs end up bottoming out and the rim end up slipping.is this because guys use a 1 inch air gun and over torque them? Thanks for answers.

Hey guys,have a mack with 44k rears, last truck I had, it had a 4 bag neway suspension. Is the mack suspension more durable as far as longetivity,neway seemed like it did not last long as bushings seemed to wear out after a couple yrs. truck hauls 160000 gross. Mack suspension has been totally rebushed as was neway.

It's 160000 gross eight axle trash hauling in michigan.

Hey guys, I have a 1991 rw713.truck has 425 cat 13 eaton trans, 4.42 rears.seems like truck will do 62, 63 mph at 1900 rpms.any way to increase speed w/o changing tires.has 11r22.5s.also approx how much to change gears to 4.17 or is ther a different 13 speed I could put in it.truck is pulling 160000 gross.really don't want to switch to bigger tire cause we drop and hook different trailers all day, and they sit low.how much speed would you gain w/ 4.17 gears?

Hi guys,friend has a 99kw with 600000 on cat 475. Problem is air compressor won't shut off and the line from compressor to air dryer will melt.it will also blow gasket on fuel filter. Anyone had this problem?

Hi guys,friend has a 99kw t800 with 475 cat,problem is the air from air compressor gets hot and melts line to air dryer and won t shut off. also it blow gaskets on fuel filter.anyone had this problem before? Truck has 600000 plus miles on engine.

Hi guys looking at 1990 superliner,truck has 400 mack motor,13 speed mack trans 4.64 rears. I was told by a trans man that you can make a mack 13 speed a 18 speed by changing shift knob and switching air lines.is this true? Also what kind of mph am I looking at with those rears? Would it be better to change ring gear to get lower ratios?thanks for replies.truck will be grossing 160000.

Looking at a 1990 mack superliner.truck has 400 mack motor recently overhauled, 13 speed, 44 rears.question is will this motor stand up to hauling heavy,160000 gross.it is a michigan special. Thanks for replies.

Looking at a 1990 mack superliner michigan special,has a 400 mack engine.question is, will this motor stand up to heavy hauling. 160000 gross.Truck has a 13 speed, 44rears. Has been overhauled recently. Thanks for replies.

Looking for nice mack superliner michigan special, 425 cat,13 speed, prefer 4.30, 4.42 rears. 18 k front, 44rears, double frame. Day cab only.