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Old 07-11-2017, 03:43 PM   #1
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Hydro-boost question

On a 1986 Elandan P30 chevy does any one Know where to get one and any numbers would be helpful
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Old 07-11-2017, 03:46 PM   #2
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They are rebuildable with parts from GM. I have done this in years past.
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Old 07-11-2017, 04:14 PM   #3
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Do you have #s and where did you get one
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Old 07-11-2017, 08:52 PM   #4
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I took mine to a little mom and pop parts store and exchanged for a rebuilt, wasn't very expensive.
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Old 07-11-2017, 08:56 PM   #5
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one # is a J8 and the other is j7 which one. Thanks for the help
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Old 07-14-2017, 07:27 PM   #6
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The j8 is for 8000#

J7 is 5000#
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Old 07-14-2017, 09:22 PM   #7
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Have you changed the ATF being used in the power steering unit? And it will require bleeding the air out of the system turning the steering wheel lock to lock and pumping the brakes while someone keeps the steering pump reservoir full. You keep on bleeding until the fluid draining through clear plastic tubing is without bubbles.

My truck now stops like it has had a completely new brake job--just from a fluid change.
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Old 07-16-2017, 08:25 PM   #8
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Have you changed the ATF being used in the power steering unit? And it will require bleeding the air out of the system turning the steering wheel lock to lock and pumping the brakes while someone keeps the steering pump reservoir full. You keep on bleeding until the fluid draining through clear plastic tubing is without bubbles.

My truck now stops like it has had a completely new brake job--just from a fluid change.
I like the sound of this
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Old 07-16-2017, 11:58 PM   #9
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I replaced my ATF a few months ago and it really helped the feel of my brakes, pedal return speed, etc. I used the drain and refill method, pumping the fluid out of the power steering reservoir with a squeeze bulb pump, refilling, running the engine, pumping the brakes and turning the steering back and forth. Repeat until the fluid coming out looked clear, it probably took twice as much fluid as bleeding the system, but the up side is no hoses to disconnect.
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Old 07-17-2017, 11:54 PM   #10
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HydroBoost Brake Feel

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Originally Posted by Bamaman View Post
Have you changed the ATF being used in the power steering unit? ...
My truck now stops like it has had a completely new brake job--just from a fluid change.
What did you brakes feel like before you changed fluid?

Mine had been in store for ~a decade but seemed to have good care prior to storage. However, the brakes have a soft, sorta "squishy" feel (not like it has air in the lines) and has so-so stopping power. This is my first Class-A so I'm not sure what's "normal" feel & performance.
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Old 07-18-2017, 03:11 PM   #11
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On mine I had the brake fluid flushed first, then a couple of months and a few hundred miles later replaced the ATF fluid. Fresh brake fluid improved the squishiness of the brake pedal, although it still requires considerable effort to stop, changing the ATF fluid did multiple things to the feel of the brake pedal, but most of all sped up the return rate, it is hard to describe, but it also made the pedal feel much more responsive.

The best way I can describe it is the pedal felt more squishy before doing a full flush on the brake fluid and more sluggish before changing the ATF fluid.
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