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Mason's 1968 model 05

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Re: Mason's 1968 model 05
Tue Jul 07, 2020 9:07 pm


Well, a lot of things have happened since the 2nd, a lot of little technical details as well as visible details.

Put both windshields in, cracked one :evil: :evil: I guess it is common to crack one ? Any way I think John zahn sold me model 15 gasket, we put the next one in with the old gasket and it worked ok, but there is one spot where the window doesn't match the frame. Again, :evil: :evil:

So then tonight took for first drive on highway, engine running great, transmission shifting perfectly, how ever our steering assist is acting really weird. It's almost like you have to steer 3 Seconds ahead of what you want the wheels to do. Maybe not enough pressure? :cry: sigh

This would be the only thing keeping us from getting on the road this weekend for a 4 hour family camping trip.

So I am a little frustrated.

Anyone have a Ross power steering box I can buy lol


Mason
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IMG_20200707_211039445.jpg
1968 05 Eagle 8v71 with roadranger 9 speed,
04/25/19 starting upgrade to series 60! and B500
Eagle obsessed
 
Posts: 226
Joined: Thu Jun 14, 2018 11:37 am
Location: McCook NE


Re: Mason's 1968 model 05
Wed Jul 08, 2020 10:01 am


Mason, sounds like you have reached a frustration point. Most of us have been there many times. Hang in there.

I can't tell what type of steering you have. If it is air assisted, you will probably want to plan for a standard PS box. If you have a PS box, you should look at the mounting bracket.

Eagle had a factory service bulletin for Model 10 buses because of a problem with the factory bracket -- see:
https://eagles-international.net/forums/viewtopic.php?f=15&t=775&p=30063&hilit=steering+bracket&sid=4b2bcb7b8eadbbc8acec9f56b6e0a104&sid=4b4e6df406d0096ba72fc4aa51b8f556#p30063

Since you have a model 05 that would probably not affect you, but I thought I would mention it.

Jim
Jim Shepherd
Evergreen, CO
'85 Eagle 10 with Series 60 & Eaton AutoShift 10 speed transmission - not at all fancy, but fully functional
Bus Project pages: http://beltguy.com/Bus_Project/busproject.htm
Blog: http://beltguy.com/blog/
Email: jim@eaglesinternational.net Note: Email sent to the this address requesting technical advice will not receive a response
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Re: Mason's 1968 model 05
Thu Jul 09, 2020 11:46 am


Mason, based on your post on BCM, we now know that you have hydraulic power assist. You are getting decent advice. One person talked about being sure that you steering is centered. I think that is important with a PS box, but not the PS assist.

All of my searching discussed air assist PS for Eagles and that system sounds like it sucks.

It sounds like you drove the bus with the assist deactivated and it drove well. That would tend to eliminate any linkage/steering component issues. That said, I would still check things like tie rod ends.

I was hoping that my parts manual would cover power assist, but no such luck. The picture below shows a very basic system that is fundamentally the same as yours (I think).

linkage-steering-power-assist-1.jpg
linkage-steering-power-assist-1.jpg (78.21 KiB) Viewed 231 times


At first glace the system seems pretty simple. That said, I worked on one in a 57 Chevy and they are a bit cranky when they get old. The control valve is the critical component and if the valving components are worn, it causes a problem. Also the linkage between the mechanical steering box and the control valve must have almost no play, or the system will "hunt". Since you have the hydraulics in place, I would vote to convert to a PS box.

We don't have a lot of information about PS boxes, but the following is about the best I could find:
https://eagles-international.net/forums/viewtopic.php?f=5&t=3030&p=22852&hilit=power+steering+box&sid=27e5be03c6a3d33019369ca5cd181bd0&sid=1a89ab8486f2380379160ebf422d20e6#p22852

Jim
Jim Shepherd
Evergreen, CO
'85 Eagle 10 with Series 60 & Eaton AutoShift 10 speed transmission - not at all fancy, but fully functional
Bus Project pages: http://beltguy.com/Bus_Project/busproject.htm
Blog: http://beltguy.com/blog/
Email: jim@eaglesinternational.net Note: Email sent to the this address requesting technical advice will not receive a response
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Re: Mason's 1968 model 05
Sun Jul 19, 2020 7:47 pm


Well last week was... interesting.

let me begin by posting what i posted on BCM.

ok, I am finally back. Sorry for the wait. Last week was quite a ride.

Let me just start at the beginning.

So after my last post, I was Down in the barn and I decided to work on bleeding the system, figuring it still had air in it. After jacking up the bus, I went around and pushed on the tire and was astonished to find that the tire would move both ways about 2-3 inches. Crawling underneath I found the problem, and took a short video of it here. https://youtu.be/GnCo9N9KGYc
I took it from the curb side, in the foreground you can see the hydraulic assist cylinder, what is moving is the 90 degree arm used to transfer longitudinal motion to side to side motion. Please take time to look at the 3 sec vid, it will answer many questions.

So basically we were 1 rusty 1/2" bolt from being in the ditch... :-[

Well that was a shock to find.

MY Hypothesis: There are 4 bolts holding this bracket on, I am sure 3 were completely rusted through and the whole assembly was being held on by one bolt and some rust. As we were maneuvering out of our driveway the additional pressure from the hydraulic assist went ahead and broke the rust so it was hanging from 1 bolt. As you recall, the hydraulic assist was not working with the 8v71.

Which leads to the crazy steering problem we had.

This was Wednesday morning. So i tore into that and around 5 pm had it all back together with new bolts, new spacers, and a lot of reinforcement above the spacers.

Took it for a test drive that evening, everything worked great, but the steering wheel still had 2 inch slop either way in it, but it was solid so drivable.

On thursday we fabricated bunks, back bed platform, counter top, some kind of seating, and fridge mounts and we left around 3 for a 'relaxing vacation'

But we got it on the road! :o

but now i can start going to bed at a regular time again lol

and my phone stopped working so no pictures till I get that backed up.


That pretty much explains the steering problem.

I'll have more pictures soon and more explanation.

mason
1968 05 Eagle 8v71 with roadranger 9 speed,
04/25/19 starting upgrade to series 60! and B500
Eagle obsessed
 
Posts: 226
Joined: Thu Jun 14, 2018 11:37 am
Location: McCook NE


Re: Mason's 1968 model 05
Mon Jul 20, 2020 7:07 am


That's a little scary. I know you have thought of this but I would spend some time looking for more rusted components on the front end.
Wayne
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