72 C20 Upper Arm shaft question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Mustard72 · 03-13-2013, 10:28 PM

All right, I'm replacing the shaft in the upper arms on my 72 C20, but I have a question. The new shafts are Moog units. I have one of them centered (I think) and installed in the a-arm, and torqued the bushings in to 90 lb-ft per the Moog instructions. One of the bushings bottomed on the side of the arm and the other bushing is still a ways out (see the pics). Is this OK? Does this mean I somehow don't have the shaft centered?

**lolife99** · 03-15-2013, 01:10 PM

Doesn't look centered to me
I would back out the torqued side and work back and forth tighten each side a little at a time.
Keep an eye on the gaps between the nuts and the a-arms.

Mustard72 · 03-16-2013, 10:50 AM

Thanks. The more I thought about it after I posted the question, the more I figured it wasn't centered. I was trying to center it on the inside of the arms not on the outsides. I'll do it the way you recommend and I'm sure it'll work out better.

Thanks again.

03-13-2013, 10:28 PM	#1
Mustard72 Registered User Join Date: Jul 2012 Location: Ladysmith, WI Posts: 641	72 C20 Upper Arm shaft question All right, I'm replacing the shaft in the upper arms on my 72 C20, but I have a question. The new shafts are Moog units. I have one of them centered (I think) and installed in the a-arm, and torqued the bushings in to 90 lb-ft per the Moog instructions. One of the bushings bottomed on the side of the arm and the other bushing is still a ways out (see the pics). Is this OK? Does this mean I somehow don't have the shaft centered? Attached Images __________________ Nick Old Mustard, 1972 Chevy C20, 350, TH350, 4.10 Dana 60 rear, owned since I was 16 in 1986 http://67-72chevytrucks.com/vboard/s...d.php?t=545356 Blue Bell, 1987 K20, 6.2L Diesel, TH400/NP208, 4.10 gears Ustahav 1976 K10, 350/350/203, Gov Loc, Yooper beater trail truck.

03-15-2013, 01:10 PM	#2
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,682	Re: 72 C20 Upper Arm shaft question Doesn't look centered to me I would back out the torqued side and work back and forth tighten each side a little at a time. Keep an eye on the gaps between the nuts and the a-arms. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

03-16-2013, 10:50 AM	#3
Mustard72 Registered User Join Date: Jul 2012 Location: Ladysmith, WI Posts: 641	Re: 72 C20 Upper Arm shaft question Thanks. The more I thought about it after I posted the question, the more I figured it wasn't centered. I was trying to center it on the inside of the arms not on the outsides. I'll do it the way you recommend and I'm sure it'll work out better. Thanks again. __________________ Nick Old Mustard, 1972 Chevy C20, 350, TH350, 4.10 Dana 60 rear, owned since I was 16 in 1986 http://67-72chevytrucks.com/vboard/s...d.php?t=545356 Blue Bell, 1987 K20, 6.2L Diesel, TH400/NP208, 4.10 gears Ustahav 1976 K10, 350/350/203, Gov Loc, Yooper beater trail truck.



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