REFLECTOR: HYDRAULIC PUMP PULSES

[Scott Derrick]

I cemented a piece of medium hard rubber about 1/2" thick on that spot 
for the gear to come up against. It stops its nicely and prevents the 
osscilation and keeps it from coming up above the guides.

Scott

Kufalk wrote:

> I would guess that the nose wheel is coming up last and it is bouncing 
> at the top. This may cause the pressure to fluctuate and cause the 
> pressure switch to make and break a few times.
> I am looking at gluing a chunk of 2x4 to the floor under the 
> leg-to-shock pivot point, to keep the nose wheel from bouncing at the 
> top. The gear leg would have to hit this block at the same time the 
> cylinder fully retracts. It just so happens that a 2x4 is the perfect 
> size.
> Darrell Kufalk
>
>     ----- Original Message -----
>     *From:* Tom Martino <mailto:tmartino at troubleshooter.com>
>     *To:* reflector at www.tvbf.org <mailto:reflector at www.tvbf.org>
>     *Sent:* Monday, July 18, 2005 10:56 PM
>     *Subject:* REFLECTOR: HYDRAULIC PUMP PULSES
>
>     What does it mean when the gear comes all the way up, then you
>     hear a few pulses of the hydraulic pump at the end of the cycle.
>     The gear doesn’t move because all three are already in their most
>     retracted positions. I simply hear pulsations of the pump.
>
>     I do not have any leaks … and it only occurs right after the nose
>     gear has reached its full “up” position.
>
>     After the initial pulses, the pump rests. After that I can leave
>     the gear up for hours and the hydraulic pump will not run or pulse
>     – confirming what my visual inspection has revealed – which is NO
>     leaks.
>
>     So why the two or three short pulses at the end of the cycle?
>
>     Guesses anyone?
>
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