how to rebuild power steering gear box saginaw part 2
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- čas přidán 15. 09. 2015
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THE BALL BEARINGS WERE ALL THE SAME COLOR AND SIZE IN THIS BOX BUT SOME HAVE DIFFERENT COLORS IN WHICH YOU JUST PUT ONE LIGHT ONE - ONE DARK - ONE LIGHT ONE - ONE DARK ONE ...... etc.
IM GOING OVER ABOUT 95% of the rebuild there are a few more orings you can change but this box was already working so it wasnt really necessary for my application.
The videos I make are for people that don't know about this stuff.
Im trying to give you an idea what to expect when attempting this rebuild. It took me 30 mins to pull box, about 2 or 3 hours to clean and rebuild, and another 30 minutes to put back in.
The steering box has been on the van for a week now and it works perfect without a single leak. Well worth the time and $25.00 kit.
I agree with Chris Craft. I was taught to use trans-gel or vaseline, as it melts and blends with P/S fluid. Just like ATF. Plus, like automatic transmissions, they also used hard Teflon seals, the white ones. Carefully install these and do not roll. You can cut a large soda bottle, lube it and slide the seals in place, preferably the bottom seals first. Now, these need re-sized to fit inside the bore. It is tapered to facilitate the installation of this spool valve with the worm gear attached to the input shaft. This gives a delayed twisting action and provides a feed-back or road feel. (Note; this part is different from truck / van to car. Even sedan to station wagon in this era) Once the Teflon seals are installed, overlap these with the cut soda bottle and place large hose clamps and tighten down. Leave on for an hour or two, but only remove just before installing the valve assembly with the worm gear on, into the housing. The input shaft needs a preload to rotate freely but with no play. Marking this before disassembly is a normal practice, but after cleaning, new parts and seals, it maybe to loose or too tight. Use good judgement if you don’t have the correct tool to be used with a beam type torque wrench. Before installing the cross shaft of pitman shaft housing, loosen the preload screw & lock nut on top. I go 1/2 turn because it’s easy to remember. If too tight due to the rebuilding procedure, the aluminum top cover will crack. Also, when installing the housing end cap, use 1 or 2 large (Deep) wood clamp(s) on cover to input housing end. This safely holds the aluminum cap on the O-ring, compressing it enough to ease the installation of the steel “Cir-Clip” into its groove. The housing fills quickly once the engine is started so watch the pumps fluid level and turn the wheel left to right or lock to lock, while the wheels are off the ground, as this will help purge air from the steering gear and lines.
Thanks Chris, I have reviewed several videos for this project but you are the only one that took the time to show and explain the pain in the ass ball bearings. Its awesome that 5 years after posting and so many people have been helped. thanks again.
When messing with Teflon seals, I learned this trick using some plastic from a two liter bottle or similar and a hose clamp. Cut a strip of plastic from the bottle. Install the seal, then wrap with the plastic. Use the clamp to apply pressure to the seal to get it to seat and get used to the idea of being cramped into the groove.
Brilliant Chris. I am in the final throws of doing this job right now. I have been constantly referring back to these vids to make sure I hadn't missed any thing. You have saved me loads of money due to the huge cost of importing a heavy steering gear box here into the UK. Thanks so much.
Thanks for taking the time to film and publish these two videos. They do really help folks understand what they are getting into. Take care, Clay
I never knew what was meant by "recirculating ball bearing" mechanism....now I know. Thanks for this.
Mine on my 74 GMC P3500 stepvan (Saginaw 708 series gearbox) only had 22 balls in the ball screw as well). The chrome plated balls that looked silver were.001” larger than the darker bearings so I had to stagger them in. I also fought that Teflon seal in the main ball screw piston and had to use a piston ring compressor sleeve to get it in. Thanks for sharing!
Thank you so much Chris I have a 71 El Camino and I'm trying to fix all the leaks and restore it. I have a Saginaw as well. Very helpful. Dad was super big into cars but has passed and now I'm trying to finish the project we both started sometime ago. Thank you for all that you do.
Hi Chris, trank you very much for the video! It took me several times with the balls. I own a Dodge Ramcharger 1985 4x4, there you has to turn clockwise to install the balls, the piston is built a litten different. Michael from Germany
Sabbath and Metallica rebuild music is the ONLY way I do rebuilds.
Hey Chris, the easiest way to handle those Teflon seals in the Saginaw steering box is to wrap a lubricated zip-lock tie around the fitted o'ring and pull it up like you do with a ring compressor. Fit the piston into the bore and the zip-lock just slides off. You will fit all the teflons and piston in no time at all. Keep up the good work and videos.
also, I recommend not using wheel bearing grease, as it does not readily dissolve in the fluid. Power steering oil works fine. For the ball return guide, I used an engine assembly paste to hold the last balls in place.
Thanks for the videos on rebuilding this box. Great info, and it really helped me understand what the ball bearings do.
Well I just finished the disassembly part, new parts will be here Friday and I will be ready to assemble a clean box and parts using your video. Actually you inspired me to do this, thanks.
Excellent video footage of ball bearings being inserted. Thanks for clarity.
Thanks Chris! Love your videos...Learned quite a bit on Power Steering Box rebuild...Nicely Done...
Hi, Chris. Thanks for the honest advice and explanations. Your two videos convinced me that I better not tackle it, myself. " A man's gotta' know his limitations." BTW, love that spline ratchet tool.
As always great job. My steering box is leaking in the same spot but now I feel comfortable enough to rebuild. 👽
This is awesome mate, thanks so much for your time and expertise, just ordered a kit for my 1984 Jeep here in Aus, gotta wait now for shipping from the good ol US of A !!