Leaking Speedo Cable?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*72longbed* · 05-08-2007, 08:59 AM

I just installed a brand new speedo cable onto my NP205. Now it leaks right at the area where the large 'nut' tightens onto the transfer case. Has anybody had this problem and what might the fix be? Making a mess of an otherwise clean undercarriage. 90wt, yuk smell!!

Thanks,
72longbed

1969K10 · 05-09-2007, 09:12 AM

my guess is there is a gasket of some form that goes there. if not, i'm sure a gasket would help. Can't be too dificult to make.

snj8198 · 05-09-2007, 10:21 AM

I didn't see this post first, you may have cracked the speedo gear when installing the new cable, or the lip seal around it go spun on installation. pull it apart again and check em over. -steve

SoCal71K20 · 05-17-2007, 12:19 PM

If it's leaking at that point, you probably need to replace that hex looking part that has a rubber seal that wears out over the years. Remove speedometer cable from t case, remove part, replace with new part, then screw back in speedo cable. The part is GM #326561 called a "sleeve" and around $ 20.00 give or take. This is for NP 205 and NP203 cases. Checkout this site www.norcalbigdawgs.net/Gallery/album49 Good luck.

*72longbed* · 05-17-2007, 04:35 PM

SoCal71K20 Thank You!! You hit the nail right on the head! I just placed the order with the local GM dealership and will have it Monday.

When so-called 'transfer case experts' told me that I couldn't get any parts for the NP205 speedo drive, a fellow member comes through and saves the day!! Again I am impressed with the knowledge and information that is available on this website.

Thanks so much,
72longbed

05-08-2007, 08:59 AM	#1
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	Leaking Speedo Cable?? I just installed a brand new speedo cable onto my NP205. Now it leaks right at the area where the large 'nut' tightens onto the transfer case. Has anybody had this problem and what might the fix be? Making a mess of an otherwise clean undercarriage. 90wt, yuk smell!! Thanks, 72longbed

05-09-2007, 09:12 AM	#2
1969K10 Senior Member Join Date: Jul 2004 Location: Clarks Hill, Indiana Posts: 733	Re: Leaking Speedo Cable?? my guess is there is a gasket of some form that goes there. if not, i'm sure a gasket would help. Can't be too dificult to make. __________________ 1969 K10 - V8, 465, 205, 12 bolt, D44 2002-current 1969 K20 - V8, 465, 221, Eaton, D44 2012-current Nothin' but drums on all 4 corners! past horses in the stable 72 C10-short step (97-02), 68 C10-long fleet (06-12)

05-17-2007, 12:19 PM	#4
SoCal71K20 Registered User Join Date: Jan 2002 Location: Lemon Grove, California Posts: 152	Re: Leaking Speedo Cable?? If it's leaking at that point, you probably need to replace that hex looking part that has a rubber seal that wears out over the years. Remove speedometer cable from t case, remove part, replace with new part, then screw back in speedo cable. The part is GM #326561 called a "sleeve" and around $ 20.00 give or take. This is for NP 205 and NP203 cases. Checkout this site www.norcalbigdawgs.net/Gallery/album49 Good luck. Last edited by SoCal71K20; 05-17-2007 at 12:33 PM.

05-17-2007, 04:35 PM	#5
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	Re: Leaking Speedo Cable?? SoCal71K20 Thank You!! You hit the nail right on the head! I just placed the order with the local GM dealership and will have it Monday. When so-called 'transfer case experts' told me that I couldn't get any parts for the NP205 speedo drive, a fellow member comes through and saves the day!! Again I am impressed with the knowledge and information that is available on this website. Thanks so much, 72longbed

05-09-2007, 10:21 AM	#3
snj8198 Registered User Join Date: Feb 2007 Location: Star Valley, WY Posts: 2,038	Re: Leaking Speedo Cable?? I didn't see this post first, you may have cracked the speedo gear when installing the new cable, or the lip seal around it go spun on installation. pull it apart again and check em over. -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



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