Your turbo with broken impeller blades, if they are missing, could be in the CAC. If you don't clean it out, at low idle it will suck the particles back into your new turbo and destroy it. Also particles can be wedged into the intake piping. Especially were the clamps join, so every part gets disassembled and cleaned. On a severe failure like a wheel burst, debris can wedge into the rubber boots and even be in the air filter. So it is best to replace the air filter and clean out the entire intake system. Your Air Fuel Ratio Control Valve, (FRC) limits rack on acceleration until sufficient turbo psi is achieved. So rack will be limited with a leak. The missing bolt was a common problem when Cat was forced to remove asbestos out of gaskets. The gasket would fail and cause the bolts to get loose. Also they changed material in the cover and it would warp causing it not to seal properly. They came out with a oring style cover, but you have to change the other part it mates against. 1988 and back the FRC cocks with turbo psi, 1989 and up they cock with oil psi. The aluminum part that the diaphragm slides over, can bottom out on the retainer creating a sharp edge. It is best to take the adjustment screw out and grind a slight angle on it and remove the sharp edge. The adjustment screw has a seal and it was bad to leak. Cat changed the seal to a 3E6760. However the parts book has not been updated and since it is a common seal they will order the inferior part. The gasket on the cover was changed and added some metal to it. But if your outer cover is warped, the gasket will not seal off the turbo psi. So sometimes it is best to order a reman FRC and get the latest design. Also the FRC has a oil filter screen in the governor housing that needs to be replaced. Take the FRC completely off and you will see it sticking out. Part number 8N6680 with a 2D6392 seal. The shaft hooks inside the governor, it don't just slide in. Make sure it is hooked. Once you have the FRC on, with the outer rear cover removed. Start the engine and push the valve in by hand to cock it. Throttle engine fast and look at you smoke. The more you turn the screw in, the faster you respond, more black smoke, more unburned fuel, soot up your trailer. The further you screw it out, less smoke, sluggish on acceleration. Find the spot you like the best.
Keep the content coming. I really enjoy a good build
Your turbo with broken impeller blades, if they are missing, could be in the CAC. If you don't clean it out, at low idle it will suck the particles back into your new turbo and destroy it. Also particles can be wedged into the intake piping. Especially were the clamps join, so every part gets disassembled and cleaned. On a severe failure like a wheel burst, debris can wedge into the rubber boots and even be in the air filter. So it is best to replace the air filter and clean out the entire intake system.
Your Air Fuel Ratio Control Valve, (FRC) limits rack on acceleration until sufficient turbo psi is achieved. So rack will be limited with a leak. The missing bolt was a common problem when Cat was forced to remove asbestos out of gaskets. The gasket would fail and cause the bolts to get loose. Also they changed material in the cover and it would warp causing it not to seal properly. They came out with a oring style cover, but you have to change the other part it mates against. 1988 and back the FRC cocks with turbo psi, 1989 and up they cock with oil psi. The aluminum part that the diaphragm slides over, can bottom out on the retainer creating a sharp edge. It is best to take the adjustment screw out and grind a slight angle on it and remove the sharp edge. The adjustment screw has a seal and it was bad to leak. Cat changed the seal to a 3E6760. However the parts book has not been updated and since it is a common seal they will order the inferior part. The gasket on the cover was changed and added some metal to it. But if your outer cover is warped, the gasket will not seal off the turbo psi. So sometimes it is best to order a reman FRC and get the latest design. Also the FRC has a oil filter screen in the governor housing that needs to be replaced. Take the FRC completely off and you will see it sticking out. Part number 8N6680 with a 2D6392 seal. The shaft hooks inside the governor, it don't just slide in. Make sure it is hooked. Once you have the FRC on, with the outer rear cover removed. Start the engine and push the valve in by hand to cock it. Throttle engine fast and look at you smoke. The more you turn the screw in, the faster you respond, more black smoke, more unburned fuel, soot up your trailer. The further you screw it out, less smoke, sluggish on acceleration. Find the spot you like the best.