HELP!! Removing a Cummins air compressor. - TheDieselGarage.com
TheDieselGarage.com
 

Home Forum Who's Online Today's Posts Vendors Advertise
Go Back   TheDieselGarage.com > Heavy, Medium, Work Trucks and Trailers > Heavy Duty

Thread Details Posted by chris142, this thread has received 16 replies and been viewed 2035 times.

TheDieselGarage.com is the premier Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
Old 12-23-2006, 01:32 AM   #1
chris142
Senior Member
 
Join Date: Dec 2008
Posts: 380
Points: 19,693
Thanks: 2
Thanked 25 Times in 23 Posts
HELP!! Removing a Cummins air compressor.

Hows it come off? It's on my NT280B Serial # 311835. Original part to the truck and engine.

I got the fuel pump off and the 6 bolts that are on the compressor side of the piece that goes between the acessory drive and the compressor. Nuthin. So I took the 5 hard to get to bolts off at the acessory drive side and still wont budge. I been prying, hammering etc.

Managed to break the connecting rod in the compressor. I can see it but it still won't come off the engine. The compressor and the other part between the accesory drive and the compressor will spin slightly, an inch or so but it just wont come off.

My Cummins book says "Remove compressor" so it's no help.

Heres the only pic I have. Truck is at my work so I had to hitch a ride home.
chris142 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-23-2006, 01:46 AM   #2
ynot
The other guy
 
Join Date: Jan 2007
Location: Des Moines, IA
Posts: 3,759
Points: 62,951
Thanks: 11
Thanked 1,216 Times in 788 Posts
If the slip collar is froze on the nose of the compressor you have to pull the pulley off the accessory drive, pull the drive, and beat it til it comes apart. You may be buying an accessory drive also (under $500). Good luck and Merry Christmas!!...T
ynot is offline   Reply With Quote
Old 12-23-2006, 01:47 AM   #3
chris142
Senior Member
Threadstarter
 
Join Date: Dec 2008
Posts: 380
Points: 19,693
Thanks: 2
Thanked 25 Times in 23 Posts
How does all this come apart? is this something I can do in the truck?
chris142 is offline   Reply With Quote
Old 12-23-2006, 02:14 AM   #4
Lowboy
Ol Dirt Contractor
 
Lowboy's Avatar
 
Join Date: Dec 2008
Location: Minden Nevada
Posts: 2,784
Points: 27,132
Thanks: 269
Thanked 314 Times in 208 Posts
Looks like the older 1 piece shaft and housing. If it hasn’t been updated to the later 2 piece compressor shaft and housing you are in for a ride.

Cummings made a kit to fix that but big $ unless you can find a used one.

The accessory drive pulley is pressed/pulled on the long compressor crankshaft with the 1 5/16” hex nut found on the front of the acc pulley. Problem is that it’s all one piece crankshaft to the nut. You need a short puller or you have to pull the shroud and radiator. They make a puller for that, OTC i think.

If the crank is damaged might as well go to the late 2 piece compressor shaft kit. Right now I’d say used would be the only way to go $ wise.:shrug:
__________________
I was Anti-Obama before it was cool!
Leno: ‘Remember the Old Days When Obama’s Biggest Embarrassment Was Joe Biden'

Ernie Hasse+ Bill Gaither America Medley
XCR 800cc Polaris Triple with Turbo, Nitrous & RMI
96 F250 7.3 Hypermax Stage III’s, H2 for now, Wide Open Performance long block. Spearco Intercooler 4” downpipe Suncoast Tranny, Terminator Oil
Newest--09 Black VW Jetta SportWagen TDI DSG Nav Roof 17" Avignon's Valentine One
Early 99 F250 SD 7.3 almost stock for now
87 Turbo Intercooled T-Bird stock
98 379 Pete 15.8L 3406E Pittsburgh Power to 900 HP Michigan Stage III OR6051 Turbo & P5 Nathan Horns
More Milwaukee V28 Tools than Tim Allen has!
Remember, nozzle size matters at the pump
Lowboy is offline   Reply With Quote
Old 12-23-2006, 02:34 AM   #5
Lowboy
Ol Dirt Contractor
 
Lowboy's Avatar
 
Join Date: Dec 2008
Location: Minden Nevada
Posts: 2,784
Points: 27,132
Thanks: 269
Thanked 314 Times in 208 Posts
I’m looking around the net now. They used to be a lot of those out there but now unless you can find someone with an old truck and a good compressor I think Cummins would be a waste of time..
__________________
I was Anti-Obama before it was cool!
Leno: ‘Remember the Old Days When Obama’s Biggest Embarrassment Was Joe Biden'

Ernie Hasse+ Bill Gaither America Medley
XCR 800cc Polaris Triple with Turbo, Nitrous & RMI
96 F250 7.3 Hypermax Stage III’s, H2 for now, Wide Open Performance long block. Spearco Intercooler 4” downpipe Suncoast Tranny, Terminator Oil
Newest--09 Black VW Jetta SportWagen TDI DSG Nav Roof 17" Avignon's Valentine One
Early 99 F250 SD 7.3 almost stock for now
87 Turbo Intercooled T-Bird stock
98 379 Pete 15.8L 3406E Pittsburgh Power to 900 HP Michigan Stage III OR6051 Turbo & P5 Nathan Horns
More Milwaukee V28 Tools than Tim Allen has!
Remember, nozzle size matters at the pump
Lowboy is offline   Reply With Quote
Old 12-23-2006, 02:44 AM   #6
Lmackattack
Highway to Hell
 
Lmackattack's Avatar
 
Join Date: Jan 2006
Location: CHICAGO
Posts: 1,022
Points: 45,337
Thanks: 97
Thanked 67 Times in 57 Posts
sounds like its sized to the shaft or the weight is not helping. ????
__________________
1978 MACK RS700L
285 HP @2100 RPM 1080 TORQUE. @1200 RPM
2 STICK 6 SPEED, 4.17 REARS ON 34K CAMELBACK SPRINGS,206"WB, 4" STRAIGHT STACKS BLOWING BLACK,

OH...AND A FEW TWISTS OF THE FUEL SCREWS ....THANKS AGAIN... FJH!
Lmackattack is offline   Reply With Quote
Old 12-23-2006, 02:49 AM   #7
Lmackattack
Highway to Hell
 
Lmackattack's Avatar
 
Join Date: Jan 2006
Location: CHICAGO
Posts: 1,022
Points: 45,337
Thanks: 97
Thanked 67 Times in 57 Posts
all I found were these

http://images.google.com/imgres?imgu...3Doff%26sa%3DX

http://images.google.com/imgres?imgu...3Doff%26sa%3DX
__________________
1978 MACK RS700L
285 HP @2100 RPM 1080 TORQUE. @1200 RPM
2 STICK 6 SPEED, 4.17 REARS ON 34K CAMELBACK SPRINGS,206"WB, 4" STRAIGHT STACKS BLOWING BLACK,

OH...AND A FEW TWISTS OF THE FUEL SCREWS ....THANKS AGAIN... FJH!
Lmackattack is offline   Reply With Quote
Old 12-23-2006, 03:07 AM   #8
chris142
Senior Member
Threadstarter
 
Join Date: Dec 2008
Posts: 380
Points: 19,693
Thanks: 2
Thanked 25 Times in 23 Posts
I went to work and shot a pic. There are several places here that can rebuild it. I gotta get it to them tho.

chris142 is offline   Reply With Quote
Old 12-23-2006, 03:19 AM   #9
Lowboy
Ol Dirt Contractor
 
Lowboy's Avatar
 
Join Date: Dec 2008
Location: Minden Nevada
Posts: 2,784
Points: 27,132
Thanks: 269
Thanked 314 Times in 208 Posts
Yep, that’s the log shaft compressor. Cummins had so many complaints about RR on that unit that they later made a 2 piece unit so you could just unbolt the compressor housing and slide it off the splines.

It has to come off with the internal gear and shaft out of the accessory pulley. I changed my 71 Pete NTC335 drive over the first time I got into that mess. Best way is to find an old Cummins with the split shaft setup.
__________________
I was Anti-Obama before it was cool!
Leno: ‘Remember the Old Days When Obama’s Biggest Embarrassment Was Joe Biden'

Ernie Hasse+ Bill Gaither America Medley
XCR 800cc Polaris Triple with Turbo, Nitrous & RMI
96 F250 7.3 Hypermax Stage III’s, H2 for now, Wide Open Performance long block. Spearco Intercooler 4” downpipe Suncoast Tranny, Terminator Oil
Newest--09 Black VW Jetta SportWagen TDI DSG Nav Roof 17" Avignon's Valentine One
Early 99 F250 SD 7.3 almost stock for now
87 Turbo Intercooled T-Bird stock
98 379 Pete 15.8L 3406E Pittsburgh Power to 900 HP Michigan Stage III OR6051 Turbo & P5 Nathan Horns
More Milwaukee V28 Tools than Tim Allen has!
Remember, nozzle size matters at the pump
Lowboy is offline   Reply With Quote
Old 12-23-2006, 03:22 AM   #10
chris142
Senior Member
Threadstarter
 
Join Date: Dec 2008
Posts: 380
Points: 19,693
Thanks: 2
Thanked 25 Times in 23 Posts
So If I pull off the belts and somehow get the pully off I can atleast get it apart?
chris142 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

New To Site? Need Help? TDG Specials

All times are GMT. The time now is 07:54 PM.



Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
DTO Garage vBulletin Plugins by Drive Thru Online, Inc.
vB.Sponsors
vBCredits v1.4 Copyright ©2007 - 2008, PixelFX Studios