Is This Normal (np205?) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*72longbed* · 05-09-2007, 09:39 AM

For all you guys out there that know your way around an NP205 transfer case, is it normal for them to push out a lot of gear oil thru the speedo cable drive? Is there a seal or gasket inside this area that would stop the flow?

Need to do something quick.

Thanks,
72longbed

snj8198 · 05-09-2007, 10:16 AM

sounds like either the plastic speedo gear has worn out, maybe has a groove worn into it, or the small lip seal around the speedo gear is shot. When either of these happen the speedo cable acts like an auger and pushes the oil up the cable. maybe time to replace the assembly.
good luck -steve

*72longbed* · 05-09-2007, 11:31 AM

Steve, is the speedo drive assembly available from anywhere new? OR maybe somebody out there has a used one (for a Chevy NP205) that doesn't leak and they want to part with it?

Thanks Steve,
72longbed

snj8198 · 05-09-2007, 11:52 AM

Contact Performance Automotive and Transmission Center http://www.transmissioncenter.net/ 888-877-1008

good luck! -steve

05-09-2007, 09:39 AM	#1
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	Is This Normal (np205?) For all you guys out there that know your way around an NP205 transfer case, is it normal for them to push out a lot of gear oil thru the speedo cable drive? Is there a seal or gasket inside this area that would stop the flow? Need to do something quick. Thanks, 72longbed

05-09-2007, 10:16 AM	#2
snj8198 Registered User Join Date: Feb 2007 Location: Star Valley, WY Posts: 2,038	Re: Is This Normal (np205?) sounds like either the plastic speedo gear has worn out, maybe has a groove worn into it, or the small lip seal around the speedo gear is shot. When either of these happen the speedo cable acts like an auger and pushes the oil up the cable. maybe time to replace the assembly. good luck -steve __________________ Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's

05-09-2007, 11:31 AM	#3
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	Re: Is This Normal (np205?) Steve, is the speedo drive assembly available from anywhere new? OR maybe somebody out there has a used one (for a Chevy NP205) that doesn't leak and they want to part with it? Thanks Steve, 72longbed

05-09-2007, 11:52 AM	#4
snj8198 Registered User Join Date: Feb 2007 Location: Star Valley, WY Posts: 2,038	Re: Is This Normal (np205?) Contact Performance Automotive and Transmission Center http://www.transmissioncenter.net/ 888-877-1008 good luck! -steve __________________ Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.