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Power steering for the Deuce?

mudguppy

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DOT HS 808 878

That helps narrow down what Standards to look under. ....
so, from the summary, it looks like if its going to be under anything, it will be under part 570. couldn't find it on that site, but google found this, and i excerpt from Part 570: Vehicle-In-Use Inspection Standards, Subpart B—Vehicles With GVWR of More Than 10,000 Pounds:

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§ 570.60 Steering system.

(a) System play. Lash or free play in the steering system shall not exceed the values shown in Table 2.
(1) Inspection procedure. With the engine on and the steering axle wheels in the straight ahead position, turn the steering wheel in one direction until there is a perceptible movement of the wheel. If a point on the steering wheel rim moves more than the value shown in Table 1 before perceptible return movement of the wheel under observation, there is excessive lash or free play in the steering system.

....Table 2. Steering Wheel Free Play Values....

Steering wheel diameter (inches)Lash (inches)16 or less2182 1/4202 1/2222 3/4

(b) Linkage play. Free play in the steering linkage shall not exceed the values shown in Table 3.
(1) Inspection procedure. Elevate the front end of the vehicle to load the ball joints, if the vehicle is so equipped. Insure that wheel bearings are correctly adjusted. Grasp the front and rear of a tire and attempt to turn the tire and wheel assemble left and right. If the free movement at the front or rear tread of the tire exceeds the applicable value shown in Table 3, there is excessive steering linkage play.

....Table 3. Front Wheel Steering Linkage Free Play....

Nominal bead diameter or rim size (inches)Play (inches)16 or less1/416.01 through 18.003/818.01 or more1/2

(c) Free turning. Steering wheels shall turn freely through the limit of travel in both directions.
(1) Inspection procedure. With the engine running on a vehicle with power steering, or the steerable wheels elevated on a vehicle without power steering, turn the steering wheel through the limit of travel in both directions. Feel for binding or jamming in the steering gear mechanism.
(d) Alignment. Toe-in or toe-out condition shall not be greater than 1.5 times the values listed in the vehicle manufacturer's service specification for alignment setting.
(1) Inspection procedure. Drive the vehicle over a sideslip indicator or measure with a tread gauge, and verify that the toe-in or toe-out is not greater than 1.5 times the values listed in the vehicle manufacturer's service specification.
(e) Power steering system. The power steering system shall not have cracked, frayed or slipping belts, chafed or abrated hoses, show signs of leakage or have insufficient fluid in the reservoir.
(1) Inspection procedure. Examine fluid reservoir, hoses and pump belts for the conditions indicated.
[SIZE=-1]Note: Inspection of the suspension system must not precede the service brake performance test.[/SIZE]


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so, i'm not seeing anything in the requirements for mechanical linkage as a part of the inspection procedure or requirements. these requirements are performance-based only.
 

Unforgiven

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I looked and looked but didn't find any specific CFR's about having only mechanical linkages. But for commercial purposes (Greyhound, tour busses, etc.) there is a steering lash requirement. And remember, these lash requirements must be met with the engine off in case of an emergency.

Part 393.209: Steering wheel systems. - Federal Motor Carrier Safety Administration

(b) Steering wheel lash. (1) The steering wheel lash shall not exceed the following parameters:


(b)(2) For steering wheel diameters not listed in paragraph (b)(1) of this section the steering wheel lash shall not exceed 14 degrees angular rotation for manual steering systems, and 30 degrees angular rotation for power steering systems.


I'm not sure if full hydraulic steering would pass this requirement.


Honestly, if you want a definitive answer call a transportation lawyer. They'll probably put a paralegal on it & phone you back an answer for free. Or you could call a dedicated hydraulic steering company & ask about CFR DOT regulations. There are several rock crawling companies that specialize in hydraulic steering. I'm sure they've already done the legal legwork. I'm sure they could give advice via email.
 

jesusgatos

Active member
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on the road - in CA right now
When the engine is off, a full-hydro system is going to function just like any other power-steering system with mechanical linkage. You can still steer, you're just pushing fluid through the lines manually. So I don't think any of the performance-based requirements would be a problem. I'm familiar with the rock crawling scene and the companies that I assume you're talking about. I've already done my homework. I'm just trying to spread the word...
 

mudguppy

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When the engine is off, a full-hydro system is going to function just like any other power-steering system with mechanical linkage. You can still steer, you're just pushing fluid through the lines manually. So I don't think any of the performance-based requirements would be a problem. I'm familiar with the rock crawling scene and the companies that I assume you're talking about. I've already done my homework. I'm just trying to spread the word...
:ditto:
 

joshuaz223

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Central Square, N.Y.
Part#: all I could find is what the picture shows.
This draglink W/ tie rods must be for a particular Ford truck application, at least the back of the joint is stamped with the oval.
The size of the cone is the same as the one from the original Deuce draglink.

G.
i know this was posted a long time ago but a lot of people are still interested. the Ford PN for this is DOHA-3304-E which translates to 1970, holman/moody hi point, truck, steering, pn304, rev E. any ford dealer should be able to find it.
 
365
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Anderson Creek, NC
Other than price, is there any reason not to use one of the complete systems made for the 2 1/2 ton Rockwells that are popular with the rock crawlers? One in particular looks very nice to me--all brackets, bolts, everything except the pump mounting bracket, belt, and pully mod.
 

BradBMI

Member
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0
16
Location
NYC/NY
Question

The Ait assist on the M35a3 really dosent cut it. Is there a kit to upgrade to hydralic steering? Any idea who makes it?

Thanks Brad
 
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