Transfer Case 76 blazer 350 4x4

My brother was driving his truck in the mountains and he got high centered. He was messing with the 4x4 knob or something and now its not shifting into high 4x4 and he got under it and manually moved it into 4 high. But he says that its starts going and then it slips back into low.

What should he check? Says it isn't sticking into high 4x4. Thanks for all your help in advance.

D.L. Man

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Sounds like bent shift linkage, after placing the transfer in neutral remove the linkage from the transfer case and use a small drill bit to align the shifter assy. then check and adjust the linkage if necessary. When you get tired of screwing with that POS 203 find a 205 with adapter, get the drive sleeve and twin-stick from ORD then swap it out and all your problems will go away.

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Mad-Dog
'79 Chevy K-10
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"Mad Dog" wrote:

The 203 and 205 use a different input shaft spline so if you swap out you will have to change tranny output shaft.

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The 203 and 205 use a different input shaft spline so if you swap out you will have to change tranny output shaft.<

That's funny, i just swapped mine and made no changes to the output shaft when using a transfer case from a '82 Blazer with the identical transmission (TH350)

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Mad-Dog
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"D.L. Man" wrote: > My brother was driving his truck in the mountains and he got > high centered. > He was messing with the 4x4 knob or something and now its not > shifting into > high 4x4 and he got under it and manually moved it into 4 > high. But he says > that its starts going and then it slips back into low. > > What should he check? Says it isn't sticking into high 4x4. > Thanks for all your help in advance. > > D.L. Man

Check linkage externally first to make sure it is shifting correctly. Something may have gotten bent on it and if not maybe he forced it and bend or damaged something internally. Low and high range are on different rails so somthing is not right. Have someone watch linkage while it is worked through selectiond.

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