Purchasing a replacement hydrobooster the right way!
Beast lost his hydrobooster while my wife and I were down in Boise. While I was down in Boise, I made the call and got a hydrobooster ordered, thinking just direct replacement. Nope!
Removal and Installation
So to remove the hydrobooster your going to need a few tools. Take a 15mm socket deep well and remove the two nuts holding the master cylinder to the hydrobooster. Now carefully capture the rubber seal in the back of the master cylinder too. Pull the master cylinder forward just enough to allow the hydrobooster out. Now remove the 3 pressure lines with a open end 18mm wrench and move those out of the way. The return hose is a spring clamp and just squeeze the clamp and slide back. Pull the hose off. Last step out here to pull the batteries so the brake lights are not burning. Now under the dash locate the rod from the hydrobooster and remive the clip on the pedal pin. This might be a bit tricky but it has tab that laps over the pin to lock and you need to lightly flex it up and over the pin whil pulling the tab. Capture the flat washer on the pin. Noe up in the dash there is 15mm nuts hold the hydrobooster in place deep well sockets are required. The top right hand nut you need to come in from the top there is a passage hole for the socket to fit through. At this point you should be able to remove the hydrobooster carefully.
Reassemble in reverse. Just remember to put the fresh o-rings on your pressure hoses so it sealed properly.
Be aware...
The documents in the box from NAPA are very clear; you need to swap parts from your old unit to make the new unit work.
The shaft that pushes the master cylinder, you might have to swap as I did. The new shaft was 10mm too long, which is the brake dragging issue.
Then the rubber boot on the input shaft has be pryed off the input shaft collar. Yea! I got that.
Then, the adapter plate that mounts the brake reservoir / master cylinder.
Rubber boot that goes on the input rod.
Approximate length of the rod installed in the new hydrobooster.
The master cylinder adapter so the master cylinder will mount!
Adapter all on and tight. As for changing the rod that is done by flipping the armed washer like a freeze plug and then work the two arms out of the groove. WARNING: Flying part hazard. The armed washer and the spring will fly so be careful and aware!
Purchasing a replacement hydrobooster the right way!
Beast lost his hydrobooster while my wife and I were down in Boise. While I was down in Boise, I made the call and got a hydrobooster ordered, thinking just direct replacement. Nope!
Removal and Installation
So to remove the hydrobooster your going to need a few tools. Take a 15mm socket deep well and remove the two nuts holding the master cylinder to the hydrobooster. Now carefully capture the rubber seal in the back of the master cylinder too. Pull the master cylinder forward just enough to allow the hydrobooster out. Now remove the 3 pressure lines with a open end 18mm wrench and move those out of the way. The return hose is a spring clamp and just squeeze the clamp and slide back. Pull the hose off. Last step out here to pull the batteries so the brake lights are not burning. Now under the dash locate the rod from the hydrobooster and remive the clip on the pedal pin. This might be a bit tricky but it has tab that laps over the pin to lock and you need to lightly flex it up and over the pin whil pulling the tab. Capture the flat washer on the pin. Noe up in the dash there is 15mm nuts hold the hydrobooster in place deep well sockets are required. The top right hand nut you need to come in from the top there is a passage hole for the socket to fit through. At this point you should be able to remove the hydrobooster carefully.
Reassemble in reverse. Just remember to put the fresh o-rings on your pressure hoses so it sealed properly.
Be aware...
The documents in the box from NAPA are very clear; you need to swap parts from your old unit to make the new unit work.
The shaft that pushes the master cylinder, you might have to swap as I did. The new shaft was 10mm too long, which is the brake dragging issue.
Then the rubber boot on the input shaft has be pryed off the input shaft collar. Yea! I got that.
Then, the adapter plate that mounts the brake reservoir / master cylinder.
Rubber boot that goes on the input rod.
Approximate length of the rod installed in the new hydrobooster.
The master cylinder adapter so the master cylinder will mount!
Adapter all on and tight. As for changing the rod that is done by flipping the armed washer like a freeze plug and then work the two arms out of the groove. WARNING: Flying part hazard. The armed washer and the spring will fly so be careful and aware!
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