TOMD

check to see if truck has dual draw. lines from each tank go to a tee then to engine. if has that loo for obstruction in driver's side tank. if it has single draw look at cross over line or shut off valve at bottom of one tank turned off. 

Need help anyone know of rebuild kit for cl air throttle valve? Part number 2320-87300052

thank you

i have a turbo and injector combo that will fix problem i can give you customers phone numbers if you want to talk ot some one that allready done really need extra power here in western Pa.

where exactly is it leaking? did you put straight edge on pan? ceck for crack on lip of pan also.

Hi guys, i was wondering if mack used the same serial numbers on trucks because my serial number is U685ST-11692 and one of the guys who had my truck said he had another u model and the serial number on that one was U685T-11692. and the only difference is that mine had a tandem rear axle originally and the other one had a single axle rear end. vinny

One model is a U685T other one is a U685ST diffrent models

if electronic engine main differences are injectors, computer program and pump settings.

Mack has real problem with emmisions restrictions choked engine. I have a turbo and injector combo that wakes engine up.

selling three GU713's (stock trucks). trucks are straight truck now, have to change over to tractor trailer air system. have most of valves figgured out. not sure on all of plumming. has anyone done any before?looked through service bulletin was some help, but want to be 100% sure. any help would be great

AIR BRAKE ROUTING SCHEMATICS.pdf

hated fixing other peoples rats nest! great looking job rhasler!

great looking truck. noticed it's a double stick. couldn't imagine shifting in a cab over!

x2

my vote for one month on next years BMT calander!!!

great pics.!!!!!

superliners were what i learned on when i started here at Watt's, will allways be my fav. truck

take oil filters off. get brass punch and hit head of bolts. use long ratchet and cheater bar. once you break bolts loose use 3/8 drive socket because 1/2 drive will get catch up on starter. if you have a 42mt starter with 11 tooth drive gear i suggest using delco starter part number 2132-8200308. gear reduction starter, lighter, with 3 year warranty.use new starter bolts part number 6AM31.

computer only takes reading from sensor. check sensor adjustmant. was there any metal on sensor when you changed it? check yoke bolt see if tight.

.I WOULDN'T USE THE CH. IT'S MADE FOR OVER THE ROAD. YOU'LL BREAK ALOT OF STUFF AND TRUCK WILL BE PIECE OF JUNK. GO WITH NEWER RD.

yes you can just give me a call.

mack has special magnets to hold up lifters. but you can use regular extention magnets. if you get ones that swiel on ends just put piece of hose over swivel, tomake it easier to put on lifter. just use cloths pins to hold magnets up.

requires special press but can be done on truck

give me a call

can help with power diffrent turbo and injectors.

try reprogram.

rpm sensor below starter, engine position sensor side of injection pump. what code does it have?

diffrent injectors and TURBO any time you add more fuel (power box) you should change turbo. there is a 96 CH 400 in the area pushing 45lbs of boost

does it set code every time you put full power? I'm not big fan of power boxes because you aren't adding more air to help keep engine cooler.call me about getting engine to run better with out power box

check fuse panel on fire wall (eecu fuse connection)