203 transfer case problems - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dmax21 · 01-09-2017, 08:17 PM

Ok now I put the truck on jack stands and put it in 4x4 and had someone watch the front shaft with it in gear and the front shaft would turn but the front wheels won't, so does this just leave the hubs as the problem?

rich weyand · 01-10-2017, 12:27 AM

Hubs or differential, I think. Hubs are more likely. A good set of Warn 9790 hubs are 100 bucks a pair at Summit. That's cheaper as a first step than doing anything with the diff.

Dmax21 · 01-11-2017, 01:41 AM

Well I found the problem the cross pin bolt had evidently backed and the cross pin slip down and broke.

**hatzie** · 01-11-2017, 04:43 PM

Did it break the carrier or just mangle the cross pin?

Dmax21 · 01-11-2017, 05:21 PM

It broke the cross pin but I had one from a 70 nova that I had fixed and I'm putting it all back together now.

**hatzie** · 01-11-2017, 05:34 PM

Maybe clean the threads with a small amount of solvent and assemble the lock bolt with a dot or two of Loctite 243. Then let it cure 24hours before filling with oil and driving.

Loctite 243 is oil resistant Loctite 242 is not.

01-09-2017, 08:17 PM	#26
Dmax21 Registered User Join Date: Feb 2016 Location: Tn Posts: 45	Re: 203 transfer case problems Ok now I put the truck on jack stands and put it in 4x4 and had someone watch the front shaft with it in gear and the front shaft would turn but the front wheels won't, so does this just leave the hubs as the problem?

01-10-2017, 12:27 AM	#27
rich weyand Registered User Join Date: Apr 2014 Location: Bloomington Indiana Posts: 1,041	Re: 203 transfer case problems Hubs or differential, I think. Hubs are more likely. A good set of Warn 9790 hubs are 100 bucks a pair at Summit. That's cheaper as a first step than doing anything with the diff. __________________ Rich Weyand 1978 K10 RCSB DD.

01-11-2017, 01:41 AM	#28
Dmax21 Registered User Join Date: Feb 2016 Location: Tn Posts: 45	Re: 203 transfer case problems Well I found the problem the cross pin bolt had evidently backed and the cross pin slip down and broke.

01-11-2017, 04:43 PM	#29
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: 203 transfer case problems Did it break the carrier or just mangle the cross pin? __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

01-11-2017, 05:21 PM	#30
Dmax21 Registered User Join Date: Feb 2016 Location: Tn Posts: 45	Re: 203 transfer case problems It broke the cross pin but I had one from a 70 nova that I had fixed and I'm putting it all back together now.

01-11-2017, 05:34 PM	#31
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: 203 transfer case problems Maybe clean the threads with a small amount of solvent and assemble the lock bolt with a dot or two of Loctite 243. Then let it cure 24hours before filling with oil and driving. Loctite 243 is oil resistant Loctite 242 is not. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

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