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another place to look ! If your wheels are steel one of your wheels may be cracked! If its the inter wheel diff it acts some what like as a posi-trac However ever a little more noticeable on dri ground !You can lock the inter axle out (MOST ) of the time, there is a switch on the dash to lock the inter axle out how ever not always some trucks were built with no lock out feature look for it on the dash!

You may have the Mack diff with the mack power divider inter -axle inter diff lock they tend to pop and bang from time to time!

mechanical pump on new motor ?? Time is of the essence! My opinion!

Too little to late ! If these people had Half A brain And intended being in the heavy haul jass they would have derived a replacement for the titan before pulling it out of production ! These Guys Are poorly organized OR they JUST simply don't give a shit! In my mind The Later is in play here! AND OR BOTH!

Remove the all bottom studs and Clean the threads put pipe sealant on them and re install em they are open to the the push tube area on the back side!

Very lucky on your part! Liner orings was on my mind Just be aware it is very important to keep your antifreeze in good standing in these as in most diesel engines ! You still could have a cooler tube failure be well advised to pressure test before putting the pan on! IF you do not change the coolant please do so I would! If your pulling the pump most parts guys forget to order the gasket for the bypass tube on the top and the the lower pump rad gasket adapter ! Just saying!

This question is important! That being said! All the above comments are true you should leave well enough alone and be happy! Your engine is reliable as is and will make you a big bag of money if you just work it! Its not a Race out there, its just Get the job Done, at the end of the day, they pay you to get the load from A to B! JOE H Made the right comment ! You could possible tweak the pump if its not VMAC Yes! The Big Question is However is it worth it!

So there ya go! Tech has some evidence its doable! remove the broken pin. maybe lightly brake hone the roller bore while the pin is removed install the new guide pin and rinse the pan out , give it a try Not really to much to loose in my mind! Might go for ever like that!😉

Yup agree with Paul a little Preasure will find a leak where Vacuam not so much! How ever changing things one a a time is sometimes all you can do!

In My opinion Its worth a try if its going to cost you a roller and a guide pin and some time that's all you got to loose! if in deed the scratches are minor, Go for if it! If you get a year you pay your self .f it fails tomorrow OWELL You rolled the dice !! Flush the pan out and give it a go! I Have A hard time believing the cam is not damaged beyond a few scratches however veiwing the lifter damage!

Around here where i Live Granite Mack in general Out pace most any other truck due to in my mind due to good sales team and decent service! Most other places in Canada , Unfortunately its the total opposite! And deserving so! As we are on an Island Semi captive audience proves to be helpful ! How ever it doesn't mean you can let your guard down you need to provide the best you can service! Regardless of the product you are selling!

EDP checK for the fuse panel being greened out left hand kick panel pull fuese and relays one by one and check em! They were up graded to have a rubber boot cover check for a rubber surround!

LiKE everything else on the thing!The Volvo Guys Now How to Charge for stuff!

Bit of a big chore here for a shade tree guy how ever ! No you don't remove the head ! The pin will be a bear to get out but its usually doable! You can Re use the cam bushings they rarely fail YOU NEED TOOLS ! you need magnets to hold up the lifters to re /re the cam you need a press to get the gear off the cam You need heat to put the gear back on the cam and oven or a rose bud on the torch! the gear gets heated to 450 -475 deg plus to install I believe ! best to get your part numbers for the cam from the dealer there are different types as you can see by the list I provided!

Yes you should and the pin is replaceable Chances are the cam is done for! PAI Offers kits for these. Not sure if Mack still does! 1 ECK-9009 ECK-9009E MAK57GC2190E KIT,Camshaft(Steel Rollers E-Tech) Includes Camshaft (1)ECM-8999 Installation Kit (1)ECK-9009-100 1 ECK-9059 ECK-9059E MAK57GC2211 KIT,Camshaft(Ceramic Rollers E-Tech) Includes Camshaft (1)ECM-8999 Installation Kit (1)ECK-9059-100 1 ECK-9066 ECK-9066E MAK57GC2205A KIT,Camshaft(Steel Rollers E-Tech) Includes Camshaft (1)ECM-8788 Installation Kit (1)ECK-9009-100 1 ECK-9078 ECK-9078E MAK57GC2209A KIT,Camshaft(Steel Rollers Late E-Tech & ASET) Includes Camshaft (1)ECM-8789 Installation Kit (1)ECK-9009-100 1 ECK-9148 ECK-9148E MAK57GC2210A KIT,Camshaft(Steel Rollers E-Tech) Includes Camshaft (1)ECM-8791 : Installation Kit (1)ECK-9009-100 1 ECK-9149 ECK-9149E MAK57GC2212 KIT,Camshaft(Ceramic Rollers E-Tech) Includes Camshaft (1)ECM-8789 Installation Kit (1)ECK-9059-100 1 891930 MAK57GC2225A KIT,Camshaft(Ceramic Rollers ASET) Includes Camshaft (1)891918 Installation Kit (1)ECK-9059-100 1 891931 891931E MAK57GC2228A KIT,Camshaft(Ceramic Rollers ASET) Includes Camshaft (1)891915 Installation Kit (1)ECK-9059-100 1 891932 MAK57GC2243 KIT,Camshaft(Ceramic Rollers ASET) Includes Camshaft (1)891920 Installation Kit (1)ECK-9059-100 1 891933 MAK57GC2249 KIT,Camshaft(Ceramic Rollers E-Tech) Includes Camshaft (1)891913 Installation Kit (1)ECK-9059-100 1 891934 MAK57GC2227A KIT,Camshaft(Ceramic Rollers ASET) Includes Camshaft (1)891917 Installation Kit (1)ECK-9059-100

Yes you should and the pin is replaceable Chances are the cam is done for!

Yup its time ! You need to also look to make sure the roller guide pin is not sheared off take a look down the hole see if the pin is still there !!!

^689 is on the money there !Yup bogus tool in my mind ! Mark your gears when u pull it back in the same spot when u assemble!

Yup Unless your p2 is usable your choices are limited

Think Barry was working on updates earlier ! I was on earlier and it said this web site was not available And was updating!

Yes

our Pet Name for the 800 series is the doberman the side image of the cab and long narrow hood! reminiscent of a dobermans head! 🙄

make sure the vents clear anything is possible, fuel return check / drain back valve also can cause this! Drain back is cheaper than the pump if you going to throw parts I would go there first!

Yup A three dressed up As Nine!

Gray or red engine?? Do you have a plugged fuel vent try cracking the fuel cap see if that makes the diffrence! So also Gray or red engine?? RED Injector cup issues if a red engine! MP 7 MP8? If gray faulty fuel supply pump could also be an issue!