Disassembling a Turbo?
07-23-2003, 04:34 PM
#1
3.0 BAR
Thread Starter
Join Date: Jun 2003
Posts: 1,956
Disassembling a Turbo?
OK, I need to take my turbo apart and figure out why its not spinning. I recently aquired it from a member of this board who said it was just rebuilt and spun before he shipped it. I totally believe him, I have no reason not to, plus the box was all beat to hell, so anyway... I need to take it apart and I haven't been able to find any sites on how to do this CORRECTLY. Any and all help would be appreciated. Thanks in advance.
07-23-2003, 04:40 PM
#2
1.5 BAR
Join Date: Feb 2003
Posts: 763
Re:Disassembling a Turbo?
now when u open the turbo here are a few things u can look for.
1. when u pull off the compressor housing (coldside) u will be able to tell if any of the fins are damaged.
2. unbolt the turbine from the shaft (make sure u mark the shaft and the turbine for re-assembly) sometimes the turbine is very tite on the shaft, u might have to give it a few taps to get it off. now remove the entire shaft. by the color on where the bearing are you can usually tell if the bearings have been cooked, itll be brown or black. if this is the case just take some 1000 grit wet sandpaper and sand it off, not to much though.
3. take a look at the bearings inside the turbo with a flashlite and u should see the bearings being a bronze color, not black.
4. i had a 14b where the bearing came out of the turbo on the shaft, this is because somehow whoever rebuilt this forgot to put the snap ring inside to hold the bearing in. might be a problem u could encounter.
5. check for cracking and contact on the exhaust turbine also.
6. there will be caked on black oil on the exhaust seal side of the shaft that can be cleaned up with some carb cleaner and some paper towel.
*** when assembling the turbo back toghther make sure when u tighten the nut on the turbine that u grab the ratchet near the middle to prevent from bending the shaft. also make sure u have lined up the marks u have made ealier on the turbine and shaft, this keeps the turbo balanced. ****
1. when u pull off the compressor housing (coldside) u will be able to tell if any of the fins are damaged.
2. unbolt the turbine from the shaft (make sure u mark the shaft and the turbine for re-assembly) sometimes the turbine is very tite on the shaft, u might have to give it a few taps to get it off. now remove the entire shaft. by the color on where the bearing are you can usually tell if the bearings have been cooked, itll be brown or black. if this is the case just take some 1000 grit wet sandpaper and sand it off, not to much though.
3. take a look at the bearings inside the turbo with a flashlite and u should see the bearings being a bronze color, not black.
4. i had a 14b where the bearing came out of the turbo on the shaft, this is because somehow whoever rebuilt this forgot to put the snap ring inside to hold the bearing in. might be a problem u could encounter.
5. check for cracking and contact on the exhaust turbine also.
6. there will be caked on black oil on the exhaust seal side of the shaft that can be cleaned up with some carb cleaner and some paper towel.
*** when assembling the turbo back toghther make sure when u tighten the nut on the turbine that u grab the ratchet near the middle to prevent from bending the shaft. also make sure u have lined up the marks u have made ealier on the turbine and shaft, this keeps the turbo balanced. ****
07-23-2003, 04:45 PM
#3
3.0 BAR
Thread Starter
Join Date: Jun 2003
Posts: 1,956
Re:Disassembling a Turbo?
Thanks. I kinda need a step-by-step, on HOW to disassemble it, I'm sure I can do it but I need to know where to mark it, so that I don't ---- up the balance. A pic would be awesome on showing me where to actually make the marks.
