Power Steering

The Davis steering is an exact steering gear mechanism.the slotted links AM and BH are attached to the front wheel axle, which turns on pivots A and B respectively . the road CD is constrain to move in the direction of its length, by the sliding member at P and Q. these constrain are connected to the slotted links AM and BH by a sliding and a turning member at each end. the steering is effected by moving CD to right or to left of normal position. C`D` show the position of CD for turning to left.

let

a=vertical distance between AB and CD.

b=Wheel base.

c= Distance between the pivots A and B of the front axle.

d=Horizontal distance between AC and BD.

x=distance move by AC to AC`=CC`=DD`, and

α=Angle of inclination of the link AC and BD , to vertical.

From triangle AA`C`

tan(α+φ)=A`C`/AA`=d+x/a

From triangle AA`c

tanα=A`C /AA`=d/a

From triangle BB`D`

tan(α-Θ)=B`D`=d-x/a

we know that tan(α+φ)=tanα+tanφ/1-tanα*tanφ

=d+a*tanφ/a-d*tanφ

(d+x)(a-d*tanφ)=a(d+a*tanφ)

tanφ=a*x/(a^2+d^2+d*x)

similarly , from tan(α-Θ)=d-x/a

We get tanΘ=a*x/(a^2+d^2-d*x)

we know that for correct steering ,

cotφ-cotΘ=c/d

1/tanφ-1/tanΘ=c/d

(a^2+d^2+d*x)/a*x-(a^2+d^2-d*x)/a*x=c/b

2d*x/a*x=c/d

2tanα=c/d (d/a=tanα)

Note: through the gear is theoretically correct, but due the presence of more sliding members, the wear will be increased which produce slackness between the sliding surface, thus eliminating the original accuracy.

Hence Davis steering gear is not in common use.

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--

GM

# kaen po =)

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power steering is a system that assists the driver with turning the wheel so that they do not have to use as much force to turn the wheel.

Most cars use a hydraulic system that uses fluid pressure to help push the wheels in the direction the driver wishes them to turn. Of a rare few cars an electric system is employed.

Where the stick is.

If it steers hard or rough in one direction but not the other it could be the rack. If it steers hard in both directions it could be the pump.

Belt loose or glazed?

Power steering pump bad?

Bent or worn front end components? Belt loose or glazed?

Power steering pump bad?

Bent or worn front end components? Belt loose or glazed?

Power steering pump bad?

Bent or worn front end components?

Power steering belt slipping?

Power steering pump bad?

Steering rack worn?

Suspension parts worn?

Most likely the brake fluid will corrode and eat-away the seals on your power steering system.

Brake fluid has a mineral in it that the rubber seals of the PS system can't handle.

If you drive it long enough you'll either get severe leaks, or potentially the pump will seize.

Best advice is to drain the system, fill with proper PS fluid, run it, then drain again.

Get clear fluid if you can so you can tell when the brake fluid is out.

This will likely take a few bottles

Tire out of balance, bent wheel, worn suspension parts, bent drive shaft, or possibly a broken motor mount.

Hi,I just replaced mine on my 94 model.I'm assuming you have the 3.4 but the repair should be about the same.In order to access the lines on the bottom you have to drop the exhaust at the rear of the engine.If you remove the 2 bolts where the pipe exits the engine and unbolt the 4 bolts at the catalytic converter and drop this pipe out of the way it's a tight fit but you can get at the fittings.Make sure to trace the lines well as it is easy to get them crossed up from the power steering pump down to the steering rack.The rest of the line replacement is easy just break the line loose at the pump and pull it out of the line clips and feed the new one back behind the engine and re-install in the opposite order.

First check to make sure the fluid is topped off. If low there may be a leak in the system and you need to put fluid in the reservoir that has stop leak in it. If the problem continues then the pump is probably starting to go bad and you will want to replace it before it goes out. Last, Some power steering pumps just make noise and you have to deal with it. Do some research on your car and see if other people say the same thing. It is common for some makes/ models to have the same problems.

How do you change a power steering pump in a 98 jeep cherokee?

The question you ask is too involved for a proper answer. You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library.

either the hose is split or the resivoir is cracked either the hose is split or the resivoir is cracked

Automatic Transmission fluid

The 1956 Cadillac equipped with power steering was quite easy, loosen the bolts on the pump and remove the belt, un bolt the reservoir/pump Assembly and turn it upside down so the oil drains out. Disconnect the lines and reverse process to re instal.

If you would like to know on a different year you will need to provide year, engine, and model Cadillac.

On top of the radiator right next to the fan

Worn ball joints?

Tools and supplies needed:

10, 13mm sockets with ratchet and extension(s)

Medium side-cutters (6" or so) to remove the crimped hose clamp.

Floor jack and pair of jack stands

New hose clamp

Small screwdriver to release the tabs on the power connector

Medium screwdriver to install the new hose clamp

Drain Pan to catch the mineral oil

1L can of Pentosin CHF 11S

Optional: new O-ring for the high pressure line

De-greaser to remove spilled oil

Procedure:

1. Remove the two 13mm nuts that attach the fan bracket to the PS pump bracket

2. Disconnect the fan electrical connector and set the fan assembly aside.

** This would be a good time to check the fan to make sure it spins smoothly and easily.**

3. Remove the two connectors from the PS pump. - The small connector has one retainer that can be released by squeezing the tab toward the connector body. - The large connector has two tabs that need to be released by gently prying them away from the connector body. It is easy to break these tabs.

4. Remove the hose clamp from the hose that goes to the reservoir. Since it is crimped on it can be a PITA to remove. I have successfully at removed these by putting a screwdriver in the crimped area and prying the crimped area apart. YMMV

5. Remove the 13mm bolt that holds the high pressure line to the pump.

6. Position the catch pan to catch the oil that will spill when the hose is removed from the pump. - You may want to have some rags handy to keep the oil off the sub-frame. Clean up will be easier this way.

7. Remove the two hoses.

8. Remove the 13mm nut and the two 13mm bolts that attach the PS pump bracket to the sub-frame - The two bolts are visible (barely) at the rear of the sub-frame in the area of the down-pipe.

9. Drop the pump far enough to remove the wire retainer clip.

10. Remove the pump.

11. Remove the four 10mm nuts that hold the pump to the mounting bracket.

12. Installation is the reverse of removal.

The thing that was the most frustrating was the removal of the low pressure hose. Everything else was pretty straightforward. If you have everything ready to go, it should only take about 1/2 hour or so. Partly depends on how difficult it is to remove the hose clamp.

a bad cv joint. on front wheel drive cars, it may be the CV joint...try a free brake inspection at a chain brake shop, and while they're checking it for free and no obligation, ask the mechanics to take a peek at your CV joints and boots..:) also everyone should have a manual for their vehicle, and a professional shop manual should be available at your local library in the reference section, make copies of the appropriate pages, and good luck:)

Power steering fluid is typically hydraulic or transmission oil. Drain the engine and change the filter. Replace the oil in the crankcase with the correct oil and amount. I don't believe it will damage the car but PS oil was not designed for use in a crankcase of an internal combustion engine.

To change the steering gaiter on a Citroën Saxo, first, lift the front of the car and secure it on stands. Remove the wheel and the retaining clip from the old gaiter, then slide it off the steering rack shaft. Fit the new gaiter in place, ensuring it's properly seated, and secure it with the retaining clip before reassembling the wheel and lowering the car. Always check for any leaks or damage after installation.

How do you put the pulley back on the power steering pump on a 1990 suburban

yes

Yes, mine does.