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Powertec bearing

On a powertec 8000 on my 270 coach is it a big job to replace the bearing can I do it myself or is this a job for a powertec Technician  everything is working good  sounds good it has 3200 hr just wondering about preventive maintenance is it just a matter of removing the end cap or do you have take the whole generator apart
Rick & Hilda looking forward to full- timing one day for now couple of months at a time
1999 U270 3602
Built number  5530.  Feb 1999            Motorcade  number 18438
8.3 Cummins Allison six speed with brake  retarder
Purchased Nov 28 2019

Re: Powertec bearing

Reply #1 –
Take off the end cap and replace the bearing. I am sure that you can do it.
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Powertec bearing

Reply #2 –
It is not a very hard DIY job. Call Power Tech and give them your model and serial number. If yours is brushless it has a long life on the bearing and Jeff can tell you when it should be changed. The same bearing is available on the web for less than half of Power Tech's price.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Powertec bearing

Reply #3 –
Mine Is a 10K brushless 1950 hours. The bearing was changed this summer. It was dry and rough when spun.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Powertec bearing

Reply #4 –
Quote from: red tractor –
Take off the end cap and replace the bearing. I am sure that you can do it.
That's what I want to know if it was right at the end cap thank you
Rick & Hilda looking forward to full- timing one day for now couple of months at a time
1999 U270 3602
Built number  5530.  Feb 1999            Motorcade  number 18438
8.3 Cummins Allison six speed with brake  retarder
Purchased Nov 28 2019

Re: Powertec bearing

Reply #5 –
If your generator is brushless you have to remove the excite coil. Then you will need a bearing puller. Mine had to the externally excited to start making power again.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Powertec bearing

Reply #6 –
Quote from: bbeane –
If your generator is brushless you have to remove the excite coil. Then you will need a bearing puller. Mine had to the externally excited to start making power again.
I believe it has brushes I see a film of brown on the end cover so I believe the bearing is there and it showing signs of wear Time to replace it and is the bearing pressed in the cover or pressed on the shaft wonder if I need a puller
Rick & Hilda looking forward to full- timing one day for now couple of months at a time
1999 U270 3602
Built number  5530.  Feb 1999            Motorcade  number 18438
8.3 Cummins Allison six speed with brake  retarder
Purchased Nov 28 2019

Re: Powertec bearing

Reply #7 –
Either way you need a puller to change the bearing.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Powertec bearing

Reply #8 –
Another thing I need to look at.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: Powertec bearing

Reply #9 –
Large removable inspection plate on center:  Has brushes.

No inspection plate:  Is brushless.

Different bearing part number for brushed & brushless.

Sometimes brushes wear commutator rather then wear the brush.  If commutator is too warn it could be major repair.  But it may be possible to sand down commutator to level out a grove. 

Not only need puller to remove bearing from shaft, it takes some reverse effort to pound new bearing back on and to the exact correct shaft location so it is correctly positioned in end housing.

Then it may take another trick to be sure outer bearing race is tight in end housing so race does not rotate with bearing.

Our gen is 8kw Isuzu brushed, end housing removable without unbolting generator.

 
 

Re: Powertec bearing

Reply #10 –
Quote from: Barry & Cindy –
Large removable inspection plate on center:  Has brushes.

No inspection plate:  Is brushless.

Different bearing part number for brushed & brushless.

Sometimes brushes wear commutator rather then wear the brush.  If commutator is too warn it could be major repair.  But it may be possible to sand down commutator to level out a grove. 

Not only need puller to remove bearing from shaft, it takes some reverse effort to pound new bearing back on and to the exact correct shaft location so it is correctly positioned in end housing.

Then it may take another trick to be sure outer bearing race is tight in end housing so race does not rotate with bearing.

Our gen is 8kw Isuzu brushed, end housing removable without unbolting generator.

 

thanks for the information
Rick & Hilda looking forward to full- timing one day for now couple of months at a time
1999 U270 3602
Built number  5530.  Feb 1999            Motorcade  number 18438
8.3 Cummins Allison six speed with brake  retarder
Purchased Nov 28 2019