Author Topic: Correct color bolts for Steering Box  (Read 2773 times)

Tinkerr

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Correct color bolts for Steering Box
« on: March 25, 2019, 01:18:58 PM »
What is the correct color/coating for the the bolts that hold the aluminium cover with the adjustment nut? I know the cover is supposed to be natural. I'm thinking the bolts were not. Thanks Paul
« Last Edit: March 25, 2019, 02:14:28 PM by Tinkerr »

Edgemontvillage

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Re: Correct color bolts for Steering Box
« Reply #1 on: March 25, 2019, 11:36:24 PM »
Bolts attaching the top cover were manganese (dark) phosphated for both power and manual boxes.

Spooky

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Re: Correct color bolts for Steering Box
« Reply #2 on: March 25, 2019, 11:50:07 PM »
here is an untouched box


Scott

Tinkerr

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Re: Correct color bolts for Steering Box
« Reply #3 on: March 26, 2019, 07:39:11 PM »
I see the box in the picture is a 69. I have a power and manual box, both dated March of 68. Is it possible there was a change is the style bolts used? Both of my boxes have a standard type bolt with lock washers. Both have been rebuilt and they used the bolts that were in the unit when I sent it to them. Thanks Paul

SMS

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Re: Correct color bolts for Steering Box
« Reply #4 on: March 26, 2019, 10:35:16 PM »
Here is my 68 PS box.


Tinkerr

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Re: Correct color bolts for Steering Box
« Reply #5 on: March 26, 2019, 11:06:26 PM »
Those are the type bolts and washers both my boxes have. Your bolts look like black phosphate. I think when they rebuilt my boxes they wire wheeled the bolts, they look like bare steel with clear coat. Thank Paul

Mike S

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Re: Correct color bolts for Steering Box
« Reply #6 on: March 26, 2019, 11:43:17 PM »
  They are very easy to replate. Most gun shops sell Zinc Phosphate under the name of Parkerizing. Get a stainless steel pot and some filtered water. I used deionized water (many pet shops will sell you deionized (DI) or reverse osmosis (R/O) water if you don't have the means. Or, bottled water works well too if you're in a pinch. Mix a batch per instructions (I used 1 oz of Parkerizing per 36oz of water), soak some steel wool or iron filings in a Mr. Coffee filter in the solution for a few hours to condition the mixture (you only need to do this once) and you're ready to plate. Do a good job cleaning the parts prior to putting into the solution.
Keep the temp between 160-190 degrees F.

Mike
67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored

Tinkerr

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Re: Correct color bolts for Steering Box
« Reply #7 on: March 26, 2019, 11:54:28 PM »
I'll give it a try. Thanks Mike

Petes L48

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Re: Correct color bolts for Steering Box
« Reply #8 on: March 27, 2019, 01:08:02 AM »
I pulled out two gearboxes, dated 312 7 and 353 7 so both off a 68 but a few months before your box.  Both has the same cover bolts, with three spokes radiating out from near the center and the letters R S C in between the spokes.  They were dark phosphate finish and had a separate lock washer.  Picture is of the 312 but both had identical bolts.  The covers did not have the Saginaw S as seen in the 69 cover above, and look the same as the picture in reply #4 above.  Both caps also had the 5689023 number, which I assume is a part #.





 

 

Edgemontvillage

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Re: Correct color bolts for Steering Box
« Reply #9 on: August 13, 2019, 11:51:24 PM »
I see the box in the picture is a 69. I have a power and manual box, both dated March of 68. Is it possible there was a change is the style bolts used? Both of my boxes have a standard type bolt with lock washers. Both have been rebuilt and they used the bolts that were in the unit when I sent it to them. Thanks Paul

Admittedly a late entrant in this discussion however I am working on rebuilding a couple of power steering boxes and am (also) curious when Saginaw made changes regarding use of cover bolts and inspection marks:

1. 008 of 1969 and 354 of 1968 dated power steering boxes I have originally came with standard 9/16 head, 3/8 thread bolts and lock washers. In Post #2 a 157 of 1969 box shows use of shouldered bolts and another Saginaw power steering box I observed dated 183 of 1969 (see photo courtesy of HawkX66, Dave) uses the same shouldered cover bolts. When did Saginaw began using the later shouldered cover bolts - seemingly sometime between January (day 008) and July (day 183) of 1969?
2. Saginaw also used a yellow inspection decal on box covers then changed to a paint daub (in 1970)? 
 
July of 1969 (183) dated Saginaw Power Steering Box Cover with Shouldered Bolts
  by

Date Unknown Box from a 1969 Camaro with Yellow Decal (courtesy of HawkX66, Dave)
by

Original 1970 Z/28 Saginaw Power Steering Box dated 110 1970 with (white) paint daub Inspection Mark



 
« Last Edit: August 14, 2019, 12:37:55 AM by Edgemontvillage »

Edgemontvillage

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Re: Correct color bolts for Steering Box
« Reply #10 on: August 19, 2019, 11:42:37 PM »
Hmm, no posts. Would be helpful to hear from Members who have a Saginaw power steering box dated between January and July 1969 to narrow the dates when Saginaw transitioned to shouldered cover bolts.

x77-69z28

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Re: Correct color bolts for Steering Box
« Reply #11 on: August 20, 2019, 02:00:41 AM »
Iíll get under the hood tomorrow. My box is dated around 100 9.
Buddy
69 Z/28 X77 burnished brown, 711 int 05A bought in 78
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69Z28-RS

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Re: Correct color bolts for Steering Box
« Reply #12 on: August 20, 2019, 02:44:09 AM »
Does it really matter if it's a PS box or manual?   The manual steering Saginaw box in my 'late 69 Z28 was assembled on day 153 of '69 and has shoulder bolts.
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
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Edgemontvillage

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Re: Correct color bolts for Steering Box
« Reply #13 on: August 20, 2019, 04:59:12 PM »
Gary thanks for contributing, my focus was on the Saginaw PS box however itís possible the changeover to shouldered bolts occurred at the same time for manual boxes. Weíll see what the posts reveal.

Danzo

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Re: Correct color bolts for Steering Box
« Reply #14 on: August 20, 2019, 10:53:32 PM »
05A 69 Z power steering- shouldered bolts