PBean

Checked the fuel shut off it is opening all the way and also un hooked the line from the manifold about a 3/8 line that runs from back of pump to the manifold un hooked there and tryed sucking air though it did find some suction but was very hard to tell.Is it worth pulling the cap off off the pump where that line goes im asumming that is the diafram or LDA you guys are talking about.the housing is kind of shaped like there could be a diafram inside. Also noticed that the throttle at the pump opens all the way and then hits a stop that is like a idle screw .Can i find any specs for this

I have checked the throtle it is opening all the way but will check out diafram and fuel shut off too thanks

Another one for you guys since you helped me with my other question. My RD Mack has a 350 E7 in it bought about 3 years ago its a 1995 runs good in very good shape 10 wheel with jake and has mack 13 speed trans truck will go on down the road when empty but when you put 20 tons on it the thing has no power at all.Does not smoke least little bit even in a strain.We got the truck at a really good price and it was a rental truck.Is it posible that because it was a rental truck some one turned the fuel adjustment down on it or is it something else.Did notice that the lead wire seal was broken on the cap where you would adjust the fuel seting on the back of the pump, truck only has about 250 thousand on it.Not realy wanting to turn up hihger than stock but just dont think its puting out would it should for a 350 hp truck.Should i just start adjusting the fuel up a little at a time to see if it makes a differnce or is there another way of checking it? Thanks

Its a ross too by the way Thanks

Thanks for your help i looked at it and i definitly think its in the box i can turn the shaft at the box a good 2 and ahalf inches before it ever moves the arm not gonna take any chances new one is about 400$ its on its way

I know this is a Mack site and i have a B61 and an RD but wanted to ask a question about my ford L8000 steering box has gotten alot of play in it more than 2 and a half inches in the steering wheel no play in the tie rods or draglink its definetly in the steering box the truck is a 1993 and in very good shape.about 280 thousand miles.My question would be is it time for a new box or is there an adjustiment.looked all over the box and can not see anything to adjust.The truck wanders all over the road and you have to keep correcting it.It does it worse when loaded.Any help would be appreaciated greatly.Trying to find a manual for it now thanks

Has any one tried replacing the vent window rubber.Ihave done it on a chevy pick up and it was a pain.Want to know before I buy it and screw it up.Might be taking it to the glass company to get them to do it ,unless its easy(dought it).Thanks