The Studeblogger

Saturday, April 03, 2010

Reinventing the wheel - Part 1.

Since the day I bought Barney, one thing that's really bothered me was the Stupid Grant Steering Wheelâ„¢ installed by the former owner. OK, it looks '60s cool, but has several drawbacks:
  1. It doesn't cancel the turn signals.
  2. The horn button doesn't work.
  3. The spokes obscure the speedometer.
  4. My car has standard steering, so the small diameter of the wheel makes parking and other low-speed maneuvers a real chore.
So I decided early on to get the parts together for an OEM steering wheel, and spent about 2 years gathering them all; including an all-black wheel from a '62 GT Hawk, a proper horn button, and all the switches, wipers and contacts that make up the rotating electrical assembly for the horn button.

Last Sunday, I decided, was the day. I'd read up on how to run wires down the column jacket (via Bob Johnstone's tech archive), so was well-prepared, I thought, to get the job done quickly.

I pulled the wheel off the Grant adapter and easily removed the adapter from the column using a 3-jaw gear puller. No problem! The PO had nipped the horn wire off the old switch and crimped on a lead to go to the Grant horn button. This had failed, which was why there was no horn action; he'd also removed the original spring-loaded switch contact. No problem; I had a new one, so I used the old wire to feed a pilot wire up the column per Bob's explanation. That's where my problems began.

The wire channel through the column jacket exits the column just under the shifter collar; the wires must then make a 50-degree turn to get into the hub. No matter how I tried, the bullet connector molded onto the end of the old wire would not make that turn. I see-sawed the wires back and forth and pulled mightily... a little too mightily, as the pilot wire released itself from the old horn wire, leaving me with the wire pulled nearly all the way out, yet stuck - with no way to feed it back down. Arrgh.

I unbent a coat hanger and was able to get it through the channel just fine, so though perhaps I could snag the offending wire and pull it back down... no dice. All told, I managed to spend nearly 3 fruitless hours on the project, winding up reinstalling the Grant wheel so I could drive the car and putting off the project for another day.

What's going to have to happen is this: In order to free the old horn wire and feed in the new, I will need to remove the shifter jacket. Problem with this is, the jacket is held onto the column by two "T-nuts" whose heads are inside the column. They will be very hard to get re-installed... but it's either that, or live with this awful wheel and no horn or turn signal canceling forever. I guess while I'm doing it, I'll install a new turn signal switch as well just to make sure there are no problems down the road.

In the meantime: Happy Easter, everyone, and happy Studebakering!

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Sunday, March 14, 2010

Adjusting your Studebaker's steering gear.

There's nothing worse than going down the road sawing at your steering wheel, trying to keep your car in its lane. Hey, it's a 47-year old car -- it's bound to have a little play in the steering gear, right? Even with a newly-rebuilt suspension, new tie rods, springs, bushings and everything, you've got to expect a little slop.

Except that you don't. There's a simple adjustment you can make that will bring your steering gear back to proper working order.

Barney's steering gear had about 4" of slop in it. That's right - four inches of "I'm doing NOTHING!!!" before any change of direction occurred. So, after scouring the Tech board at the SDC Forum, I found the secret to fixing it.

In this post, Tom Bredehoft posted the procedure, which is really simple. Let's dive in! My Lark has a Saginaw recirculating-ball steering box, but the procedure is similar for the Ross cam-and-lever box as well.

The adjustment for the steering box is on the driver's side of the car, just above the frame rail, and has to be accessed from the wheelwell. So we'll get started by jacking up the front end and removing the driver's front wheel and tire.

Once the wheel is off, you can see the heavy composite dirt guard stapled to the inner fender to keep dirt, mud and water from entering the engine compartment. Grab this from the bottom and lift it up to expose the steering gear adjustment screw.

There's a lock nut holding the adjustment screw that must be loosened before you can turn the screw. This area has a lot of grit and grime and oil in it, and likely your steering box will be just as grimy as mine. I used a steel brush to clean the crud out of the threads, then backed off the lock nut with a 5/8" box wrench. Once the nut is loose, turn the screw clockwise until you feel resistance, then back it off a bit and snug up the lock nut. Turn the steering wheel lock to lock and make sure that there are no points where it binds; if it does, you've tightened the screw too far. Undo the lock nut, back the screw off, and try it again. Make sure the steering moves smoothly through its entire range without any tightness. Be sure the lock nut is tight, put the wheel back on, and lower the car.

Ready for a drive? No you're not. One more thing to do before you hit the road: check the lubricant in the steering box.

Pop the hood and locate the steering gear filler plug. It's the big, square plug just above the Pitman arm. Unfortunately, it's in a slightly unhelpful location, down at frame level, slightly obscured by the brake lines and parking brake cable.

I put together something with a little reach; a 1/2" crowfoot wrench on a 16" extension. This allowed me to snake down amongst the cables and wires without trying to muck around down there with a spanner in the limited space available.

Once the plug is out, shine a light into the gearbox and see if you need to top off the lubricant inside. Chances are, you will. In fact, my gearbox was so empty I could see the worm gear. To fill the box, you'll need a special lubricant.

Originally, Kendall 999 gear lube was the specified lubricant for the Saginaw box, but Kendall is long gone, unfortunately, and Brad Penn, their successor, has no modern equivalent. Fortunately, Studebaker International has a re-creation: Semi-fluid Steering box grease. it's part No. 801651. This stuff comes in a caulk-type tube that's got enough in it to refill an empty box. A good thing, because mine took nearly everything in the tube! Just one more thing that makes me wonder why this car didn't drive into the ditch years ago... Who knows when anyone last checked it?

Once the box is full, stick the plug back in. But before you go for a drive to test the steering gear adjustment, make sure your lug nuts are torqued properly - the Studebaker shop manual specifies 74 - 85 lbs.-ft. I mention this because I had neglected to re-torque my lugs after I brought the car home from the brake shop, and they came off far too easily when I went to remove the wheel. (Could account for the front-end shimmy on my last freeway outing.) I usually split the difference, so I set the wrench for 78 lbs.-ft.

Having done this, I took Barney on the road. You would not believe the difference in the steering! The slop is now completely gone, and the car tracks straight and true down the road with no wandering. Bonus: it was a beautiful day in San Diego today. Great day for a photo in the park!

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Friday, November 13, 2009

Studebaker Steering Box Info.

Studebakers used a few different models of steering gearbox over the years, from primarily two sources: Ross and Saginaw.The Ross boxes were cam-and-lever gears that were used throughout the 1950s and into the 60s on almost all Studebaker cars and trucks.Saginaw boxes were more modern recirculating-ball types used on some 50's Studes and post-63 Lark-types. Most people agree that the Saginaw boxes have less steering effort and are easier to repair.

Anyway, there's an easy way to tell which kind of steering gear your Studebaker has, as explained by SDC Technical Editor Bob Palma on the SDC Forum:

To determine if you have a Ross Box, see what size wrench is needed to remove the square pipe plug at the check/fill hole on top of the box. If the pipe plug requires a 3/8" or 7/16" wrench, it is a Ross box. If the plug is near the very top of the box and requires a 1/2" or 9/16" wrench, it is a Saginaw unit (thank goodness!)

Why does it matter? Primarily because the two different types of manual units take two different types of lubrication.


Left: Ross steering box. Right: Saginaw box.


The Saginaw boxes are easy to lube: they take standard chassis grease. You can literally pull the plug and pump in a few squeezes of chassis lube from your grease gun to top them off. The Ross boxes, however, take an 80w or 90w gear oil with EP (ex/treme pressure) additives; Kendall 999 was the preferred grease, but Kendall is no longer around. So, what to use?

Studebaker International to the rescue, with p/n 801651 Semi-Fluid Steering Grease. This is heavy stuff that can also be used as assembly lubricant when you're repairing a Ross or Saginaw box, or to refill a Saginaw after service in lieu of the special S-P steering lube that's long out of production.

Oh, and Jeff Tangemann of Lincoln, Nebraska writes that "a steering shaft out of a circa 68 Chevy truck will fit in a Lark Saginaw steering box." Good to know!

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