eastroad
Well-Known Member
212 grader, serial no. 9T4728. Pony engine start.
I was called to repair a coolant leak on this grader; as soon as we removed the hood, the cause was obvious. The pre-combustion chamber on #2 Cylinder had come apart and the upper part, with the injector, had popped up out of the head. I removed the fuel line, injector and bigger part of the chamber easily enough, but the lower part of the chamber was a bear to get unscrewed. The head seems undamaged and a donor engine provided a good pre-chamber. I need to get a new copper gasket but I already have the o-rings.
My question concerns the tightening torque for the chamber into the head. I know the later pre-combustion chambers (the ones with a glow plug in them) are a heavier part and torque to 150
lb/ft +/- 50 (?) lbs. This chamber is a two piece part that seems to be brazed together, and this is where it came apart. It seems that it might not stand that 150 lb torque so what is the correct torque ?
I was called to repair a coolant leak on this grader; as soon as we removed the hood, the cause was obvious. The pre-combustion chamber on #2 Cylinder had come apart and the upper part, with the injector, had popped up out of the head. I removed the fuel line, injector and bigger part of the chamber easily enough, but the lower part of the chamber was a bear to get unscrewed. The head seems undamaged and a donor engine provided a good pre-chamber. I need to get a new copper gasket but I already have the o-rings.
My question concerns the tightening torque for the chamber into the head. I know the later pre-combustion chambers (the ones with a glow plug in them) are a heavier part and torque to 150
lb/ft +/- 50 (?) lbs. This chamber is a two piece part that seems to be brazed together, and this is where it came apart. It seems that it might not stand that 150 lb torque so what is the correct torque ?