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Old 04-21-2017, 09:36 PM   #1
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Brake pressure switch - Harney hydraulic disc

I have a 2000 Harney on a Magnum chassis. The master cyclinder started to leak and I ordered a replacement. The replacement didn't come with a new pressure switch so I removed the old one and it won't fit the new one. It might be because I bend bleed it before attempting to put the switch in.

Anybody have an experience with these master cylinders. This is a hydraulic setup with disc brakes, hydroboost. the pressure switch looks fake, it has no moving plunger and the two prongs for the connector appear to be connected.

this is all I can find on it. I tried blocking each line and bleeding it more to see if the valve will move, but nothing.

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Old 05-29-2019, 03:39 PM   #2
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Harney Master Cylinder

This is a long shot, but i have a 2000 Harney Magnum Chassis that needed a master cylinder for the brakes ( as well as all new disks and pads,. the truck shop where i took it claims the Cost for the Master cylinder is $3,800 can that be correct?

Any help with part numbers and parts dealers would be most appreciated

Mike in Pittsburgh
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Old 05-30-2019, 07:35 AM   #3
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Do you have the Bosch Hydro-max system?
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*SMC-Bvr-Mnco Chassis/Suspsn/Info https://1drv.ms/f/s!AtvAXw_lfqbToxXYREK9YdBP08Jn
*SMC-Bvr-Mnco Wiring Diagrams https://1drv.ms/f/s!AtvAXw_lfqbTm0WTuuNqpn9a8hCh
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Old 05-31-2019, 09:12 AM   #4
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Thanks, unfortunately I don't know as the shop has the vehicle , I am asking them for a list of the parts they ordered.
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Old 06-01-2019, 06:54 PM   #5
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http://www.powerbrake-drivetrain.com...ix-2236193/yes that seems high even if you are replacing the hydroboost also
Maybe if it includes labor master cylinder and hydro boost still high but the job is done


Mine is the Bendix now Bosch
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Old 06-03-2019, 11:49 AM   #6
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I replaced my MC only, here are my notes on the centric part number for 2000 Harvey renegade

BRAKE MASTER CYLINDER 2239045
Centric 130.79031

Search finditparts.com. best source I have found for these rv chassis parts.
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Old 07-14-2019, 11:03 PM   #7
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Hi i just bought a harney renegade motorhome and it didnt come with a owners manual do u know where i might find one it would be a big help to have one thanks
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