TH350/NP205 Adapter Bearing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Chief_Wiggum · 07-11-2012, 07:00 PM

I'm swapping my NP203 for a NP205 out of a '72 Blazer. The adapter has the support bearing in it which is trashed. Anyone know the part number for it? Digging around online, I can't seem to find anything. Instead of replacing it, can I replace the drive coupler with a later straight unit and just leave out the bearing? Thanks for the info.

Mike

OLDCHEV4X4 · 07-15-2012, 03:31 PM

Yes, you can delete the bearing. I tried to find that bearing and coupler one time and it is discontinued. The coupler was sloppy, so I went with the non bearing coupler and everything is a-ok.

Chief_Wiggum · 07-18-2012, 02:52 PM

Thank you for the information. I appreciate it.

WhiteWhale · 07-17-2014, 02:21 AM

Quote:

Originally Posted by OLDCHEV4X4

Yes, you can delete the bearing. I tried to find that bearing and coupler one time and it is discontinued. The coupler was sloppy, so I went with the non bearing coupler and everything is a-ok.

what years have the non bearing coupler? Part number?

Thanks

OLDCHEV4X4 · 07-17-2014, 07:23 AM

I think 1970/71 was the first year for the non bearing coupler.
I got mine at a place called 4xheaven in NY. Call em up.

Orange Crate · 07-17-2014, 05:34 PM

Chief....please use search, your info was discussed here:

http://67-72chevytrucks.com/vboard/s...hlight=adapter

WhiteWhale · 07-18-2014, 12:51 PM

I have a January built 1972 K20 which still has the bearing.

For those who wish to keep the bearing in place the part # is MRC 209S.

Here are the rest of the part numbers for the square O ring, 2 inner seals and t case to adapter seal (mandatory!! do not seal with RTV)

O ring : TK30046
Seals : 471424
T/C seal: TK10516, QU50450

**kwmech** · 07-19-2014, 02:17 AM

Make sure you pack the spline coupler with grease before installing--both sides

WhiteWhale · 07-19-2014, 02:53 AM

Pack? I put a finger full of HD grease on each side, should I pack it full?

Also forgot to mention there is also an O ring on the T/C input shaft that slides into the end of the coupler. No part number or listing but got one at an old school auto parts that had the orange Dorman boxes and i just matched them up.

**kwmech** · 07-19-2014, 09:17 PM

Well, you don't have to pack it solid, but there should be a decent amount

07-11-2012, 07:00 PM	#1
Chief_Wiggum Registered User Join Date: Jan 2012 Location: Flagstaff Posts: 7	TH350/NP205 Adapter Bearing I'm swapping my NP203 for a NP205 out of a '72 Blazer. The adapter has the support bearing in it which is trashed. Anyone know the part number for it? Digging around online, I can't seem to find anything. Instead of replacing it, can I replace the drive coupler with a later straight unit and just leave out the bearing? Thanks for the info. Mike

07-15-2012, 03:31 PM	#2
OLDCHEV4X4 Registered User Join Date: Apr 2000 Location: Chester County PA, USA Posts: 1,228	Re: TH350/NP205 Adapter Bearing Yes, you can delete the bearing. I tried to find that bearing and coupler one time and it is discontinued. The coupler was sloppy, so I went with the non bearing coupler and everything is a-ok. __________________ 72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania

07-18-2012, 02:52 PM	#3
Chief_Wiggum Registered User Join Date: Jan 2012 Location: Flagstaff Posts: 7	Re: TH350/NP205 Adapter Bearing Thank you for the information. I appreciate it.

07-17-2014, 07:23 AM	#5
OLDCHEV4X4 Registered User Join Date: Apr 2000 Location: Chester County PA, USA Posts: 1,228	Re: TH350/NP205 Adapter Bearing I think 1970/71 was the first year for the non bearing coupler. I got mine at a place called 4xheaven in NY. Call em up. __________________ 72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania

07-17-2014, 05:34 PM	#6
Orange Crate Registered User Join Date: Feb 2011 Location: Under the Truck Dreaming Posts: 661	Re: TH350/NP205 Adapter Bearing Chief....please use search, your info was discussed here: http://67-72chevytrucks.com/vboard/s...hlight=adapter __________________ 72 K20 Custom Camper, D60, 14BFF, full roller 406 TPI w custom built ECU and yes..it has tow hooks...

07-18-2014, 12:51 PM	#7
WhiteWhale Registered User Join Date: Apr 2014 Location: Southern California Posts: 200	Re: TH350/NP205 Adapter Bearing I have a January built 1972 K20 which still has the bearing. For those who wish to keep the bearing in place the part # is MRC 209S. Here are the rest of the part numbers for the square O ring, 2 inner seals and t case to adapter seal (mandatory!! do not seal with RTV) O ring : TK30046 Seals : 471424 T/C seal: TK10516, QU50450

07-19-2014, 02:17 AM	#8
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,460	Re: TH350/NP205 Adapter Bearing Make sure you pack the spline coupler with grease before installing--both sides

07-19-2014, 02:53 AM	#9
WhiteWhale Registered User Join Date: Apr 2014 Location: Southern California Posts: 200	Re: TH350/NP205 Adapter Bearing Pack? I put a finger full of HD grease on each side, should I pack it full? Also forgot to mention there is also an O ring on the T/C input shaft that slides into the end of the coupler. No part number or listing but got one at an old school auto parts that had the orange Dorman boxes and i just matched them up.

07-19-2014, 09:17 PM	#10
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,460	Re: TH350/NP205 Adapter Bearing Well, you don't have to pack it solid, but there should be a decent amount



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