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If the bearings are worn there will be more to just replacing the bearings. The gear mesh pattern has changed so when you replace just the bearings there's a chance there will be an annoying noise coming from the final drive unit that won't go away. It may be necessary to replace the output gears .
Forward clutch defective
Reverse brake defective
Reverse brake piston stuck, worn, or damaged
Planetary carrier assembly worn or damaged
Sun gear worn or damaged
Ring gear worn or damaged
Input shaft needle bearing worn or damaged
Thrust needle bearing on planetary carrier seized up, worn or damaged
Thrust washer on planetary carrier seized up, worn or damaged
Shift cable broken or out of adjustment
Manual valve lever and pin worn
Valve body assembly defective
Control valve body assembly defective
Manual valve body defective
ATF joint lines worn or damaged
Inhibitor solenoid valve defective
Transmission range switch defective
Orange or O terminal on Tstat energizes valve in colling cycle. Go to outside unit jumper red to orange and see if Reversing valve energizes. If it does . Problem inside possible Tstat. You shoulf here the valve click. Have someone inside switch from off to cool you should here valve. Rusty
carrier did sell some systems with R407c as a quick fix to gov regulations for about 2 yrs. R407c is a blend . and is treated like R410a except R407c pressures are more simular to R22. being that the pressures run the same the system should work with out changing any parts that being said if the evaporator has been used for R22 the oil residue wiil give you problems ifit is a new unit you would be ok.
not only do you need the nozzles....you will need the spring changed in the gas valve and a manometer to set the proper gas pressure output from the valve.If you change the jets only you could do alot of damage to your furnace.