Power Steering Pump

[Wes G.]

Please refer to attached photos.
Can anyone tell me if this is the correct Power steering pump (#5698119) for a 1969 427 (w/o AC, w/AIR)?
Which of the other two numbers is the date code (DA106 or 109)?
How do you read the date code? Month (1st two digits)/year (last digit)?
Thanks
Wes

[Graeme B.]

Re: Power Steering Pump

10th. week '69 ?

[Dick W.]

Re: Power Steering Pump

From the photo it appears to be correct. That pump had many GM (and other manufacturer's) applications. The reservoir is the thing that is unique

[Jim S.]

Re: Power Steering Pump

My Saginaw power steering pump drawings from the late 1960s early 1970s all have this same date coding note:

Stamp Date pump is tested on the reservoir body near the filler neck.

000XYZ Where;
000 is day of year (001 thru 365)
X is Assembly Station (L or R)
Y is Assembly Shift (A, B, or C)
Z is Last Digit of Year (6 for 1966, etc.)

BTW, I don't have 5698119 listed as one of the Corvette power steering pumps used in 1969. Is that number cast onto the pump housing? If it is cast on the housing, then it is actually the casting number and could represent any number of Saginaw power steering pumps that used that casting.

I have the following power steering pump assemblies:
5698078 Early 1969
7808286 Late 1969

One thing that bothers me concerning the above two drawings.
5698078 pump assembly has a reservoir spout that is attached right in the center of the rear of the pump reservoir and angles down to the right of the discharge fitting.

7808286 pump assembly has a reservoir spout that is attached on the back of the pump but to the left of the discharge fitting and out near the edge. That spout is actuall pointing up in somewhat the same direction as the reservoir cap.

It is unusual to find the return line spouts pointing in opposite directions as a mid-year change. Possibly Joe Lucia could tell us if there was a return line change during the 1969 model year. I would think that the Late 1969 pump reservoir would require a longer length of rubber return line hose in order to reach the upward pointing spout.

Jim

[Joe L.]

Re: Power Steering Pump

My Saginaw power steering pump drawings from the late 1960s early 1970s all have this same date coding note:

Stamp Date pump is tested on the reservoir body near the filler neck.

000XYZ Where;
000 is day of year (001 thru 365)
X is Assembly Station (L or R)
Y is Assembly Shift (A, B, or C)
Z is Last Digit of Year (6 for 1966, etc.)

BTW, I don't have 5698119 listed as one of the Corvette power steering pumps used in 1969. Is that number cast onto the pump housing? If it is cast on the housing, then it is actually the casting number and could represent any number of Saginaw power steering pumps that used that casting.

I have the following power steering pump assemblies:
5698078 Early 1969
7808286 Late 1969

One thing that bothers me concerning the above two drawings.
5698078 pump assembly has a reservoir spout that is attached right in the center of the rear of the pump reservoir and angles down to the right of the discharge fitting.

7808286 pump assembly has a reservoir spout that is attached on the back of the pump but to the left of the discharge fitting and out near the edge. That spout is actuall pointing up in somewhat the same direction as the reservoir cap.

It is unusual to find the return line spouts pointing in opposite directions as a mid-year change. Possibly Joe Lucia could tell us if there was a return line change during the 1969 model year. I would think that the Late 1969 pump reservoir would require a longer length of rubber return line hose in order to reach the upward pointing spout.

Jim

Jim------


The return line did not change during 1969. In fact, the same return line, GM #3826278, was used from 1963 to 1982. There may have been a change in the specs for the 3826278 over the years, though. In fact, the 3826278 is kind of an interesting piece. I'd love to see a Saginaw drawing of this piece.

The pressure, extend, and retract hoses that GM used in PRODUCTION and SOLD in SERVICE (right up to recently) for 1963-79 Corvette applications were remarkably the same over all the years. However, the return hose, at least the one sold in SERVICE for at least the last 20 years, I believe changed somewhat in configuration.

[Jim S.]

Re: Power Steering Pump

Joe,
Here is a partial scan of the Corvette power steering return line hose.

As far as I can remember (right through the end of C3 production in 1982), the rubber hose was always retained to the return pipe by a simple crimped collar that had some type of black plating on it.

It is possible that after 1982, Chevrolet (or GM Service Parts) may have sourced the return line assembly outside of Saginaw and some other supplier could have made service parts with a different crimped collar or end body.

Jim

Jim

[Joe L.]

Re: Power Steering Pump

Joe,
Here is a partial scan of the Corvette power steering return line hose.

As far as I can remember (right through the end of C3 production in 1982), the rubber hose was always retained to the return pipe by a simple crimped collar that had some type of black plating on it.

It is possible that after 1982, Chevrolet (or GM Service Parts) may have sourced the return line assembly outside of Saginaw and some other supplier could have made service parts with a different crimped collar or end body.

Jim

Jim

Jim------


Yes, I think that's exactly what occurred. I pretty much figured that the hose crimp of the original return line would have been of the same configuration as the crimp used for the other three lines and your drawing confirms exactly that.

The crimp and hose end configuration of the other 3 lines (i.e. pressure, extend, retract) for both PRODUCTION and SERVICE remained the same from 1963 until their recent discontinuation from SERVICE. However, the crimp style for the SERVICE return hose changed many years ago to the style seen in the attached photos.

Aftermarket hoses have always had a completely different crimp style than GM hoses for all 4 of the hoses. There was also a HUGE difference in price between the aftermarket hoses and the GM hoses. The aftermarket hoses could easily be purchased for $10-15 each. The GM pressure, extend, and retract hoses carried a GM list price of over $100 each at the end.