William Allen

Where could I find a good place for truck parts and accessories for a 1976 mack R600

It has a a handle that slides not one that pulls out. 

11 hours ago, mrsmackpaul said:

I have used a crow bar on jaws to pop them open on grease plates (fifth wheels) that have been a trailer sitting for decades

If you hold the handle out with a chain block or come along, so the fifth wheel cant relock and then as said, apply the trailer brakes and work it back woulds and forwards it will no doubt release pretty easily 

 

Paul 

It has a handle that you slide. Not a pull out one

1 hour ago, Prowrench said:

are you parked on flat level ground? is the tractor backed up against the king pin? what make fifth wheel is it?

It is on level ground. The king pin is against the fifth wheel plate. And it is what ever fifth wheel that was put on from factory in 76.

I have a ‘76 R600 the trailer has been hooked up for a couple of years just because we never used the truck. I’ve been getting it back running to haul a dozer. when i went to unlock the fifth wheel it seemed to be locked up. Im guessed do to the old grease that is packed in there. I need to know ways to clean the old grease out to get the fifth wheel freed up.