Re: Fools rush in .....

[cordeiro@adi.com (Alan Cordeiro)]

>I haven't taken apart my hydraulic pump (yet!), but I believe the 
>Bentley manual recommends grinding the corners off a large slotted
>screwdriver bit to fit one side of the X-shaped slot (i.e. / or \, not X)
>then using an impact driver with a hammer to loosen the plugs.  In case
>you're not familiar with an impact driver, it's a metal cylinder, about
>6" long and 1" in diameter, that rotates a quarter turn when struck with
>a hammer.  Very useful - the downward force provided by the hammer can
>prevent a lot of stripped screw heads by helping the bits grip the screw
>better.  Should only cost $10 - $20 at a motorcycle or auto parts shop.

>Mike Rottenborn

My Bentley kept MUM about any such tool. You have a MONSTER impact
driver, mine takes relatively small bits. The blade needs to be a
minimum of 0.5' ( 13mm ) preferably 5/8" ( 15mm ). The impact idea
is great though. It keeps pressure on the screw, and jolts it to
help break it loose.

>The tool used was the pry bar. One end of the bar I've shaped using >electric
>sand wheel.
>
>     --------------------------
>				|
>				| <- Shaped end

>Vladimir

Another neat tool, Necessity is the mother of tool making

>has anyone tried using a sealing type of washer used in hydraulic
>applications including aircraft?  Its a washer with a built in, molded,
>o-ring.


>Carl DeSousa

Before I reassembled the pump, I seriously considered using soft
copper washers about the same size and shape as the O-rings to
fit under the "X" ports. These would work like the ones on the banjo
fittings. I know that aircraft run much higher pressures in their
hydraulic systems, upto 6000 psi, since size reduction of the pumps
and servo actuators directly translates to WEIGHT reduction, and
every ounce saved means one ounce less to take-off with, and carry 
around for years and years. It is worth some investigation, perhaps
we should "volunteer" Carl for this project. Would you need rubber
om both sides of the metal washer ?

>If you have a manual tranny, then you will probably have that damn big 18
>or 19mm hex key.(I forget) I should go check to see if my tranny has the
>right amount of fluid . . .

>Ernest Wong
>email: esw5@cornell.edu

Yes, have one of those too.
>
>Sorry, I'm confused by this.  The starter is fine.  These accesories are all 
>permanently not working, even when the motor is running.  Some other 
>accessories such as the radio ARE working.
> -Frank

Robert Houk has explained it pretty well on my behalf, Thanks Bob.

Alan