danovak

Sorry have been busy with the cold snap that has hit us in northern illinois and all the problems associated with the cold. The relay in the fuse box by the coolant tanks works as you can hear it when you flash the markers with the turn signal switch all other fuses check out good inside the cab and in the fuse box outside the cab on firewall.

Have not found the problem, but i have not been able to work on the truck since i posted. I thought that i would be able to find a wiring diagram on here but i did not see any. What happened to the day when Mack used to have the wiring diagram in the cover of the fuse box, none of our Cv713 came from Mack with them, but before we got them they were sent to have tanks put on them and then off to be painted so they could have disappeared along the way. I figured the boss would buy one but he doesnt seem interested in doing that and i have not been able to get to a dealer to try and purchase one myself.

Has anybody had a problem with a cv713 granite cab marker lights ? have a truck at work and the three middle marker lights work but not the outer two, truck has just one light switch, not like the older ones that have two switches, have no wiring diagrams at work to go off of, tried changing the turn signal switch and the relay at firewall but that doesnt do anything all fuses are good, didnt know if there was another relay hidden under dash ? You can hear the relay working when you push the switch on turn signal switch.

I work for a shop and we have various model Macks the one that we are having problems wiyh is a RB690S. Every once in awhile it will not start, it cranks fine but will not fire up and then if you leave the truck sit for a couple of hours it will start right up. Has been to Mack dealer for this problem but they could not find anything wrong. Was wondering were i could find any information on the shutdown system on this truck. It is an electrical system not a cable shutoff. Where is the solenoid or sender actually located on the pump and is it difficult to change ? We have none of the current model engine ,vmac instructional booklets and do you know anyplace to get these booklets without spending an arm and leg ? Or is there a website that has all the information like a motor manual ? Thanks for any information provided.