Re: Successful Packard Hunt
Posted by HH56 On 2012/11/5 0:29:32
Your compensator valve is working or you would have no pedal or brakes at all and has no connection to or with the relief port.
Referring to the photos above, The vacuum piston removes by taking the hose fitting on the side of can off. Those two screws holding the assy remove and the plate & elbow portion inside the can comes off. At the top is another screw where the air breather cover is attached so it also removes. Once those items are out of the way and pedal disconnected from rod the entire vacuum piston will slide straight out.
Once vacuum section is out you can see the end of master cylinder piston rod and a large spring held by a clip inside the spring upper support. Remove the clip, support and spring and you can access the entire can. The leather around the vacuum piston can be inspected and cleaned. New lube should be applied. Might ask Ross what he recommends if it isn't mentioned in his how to.
Along with Ross's write up, instructions and better pictures on removing those items than the 51-4 manual pictures are in the 55-6 service manual.
As you are planning to put the car up for the winter, I'd still say the sooner the better. Would also strongly suggest you remove the BTV and have it exchanged or rebuilt by a knowledgeable rebuilder while the car is laid up. Get a couple of 3/16 or #10 vinyl screw thread protectors at the hardware store and slip them over the ends of the open tubing to keep the fluid in and dirt out.
Attach file:
(8.68 KB)
Referring to the photos above, The vacuum piston removes by taking the hose fitting on the side of can off. Those two screws holding the assy remove and the plate & elbow portion inside the can comes off. At the top is another screw where the air breather cover is attached so it also removes. Once those items are out of the way and pedal disconnected from rod the entire vacuum piston will slide straight out.
Once vacuum section is out you can see the end of master cylinder piston rod and a large spring held by a clip inside the spring upper support. Remove the clip, support and spring and you can access the entire can. The leather around the vacuum piston can be inspected and cleaned. New lube should be applied. Might ask Ross what he recommends if it isn't mentioned in his how to.
Along with Ross's write up, instructions and better pictures on removing those items than the 51-4 manual pictures are in the 55-6 service manual.
As you are planning to put the car up for the winter, I'd still say the sooner the better. Would also strongly suggest you remove the BTV and have it exchanged or rebuilt by a knowledgeable rebuilder while the car is laid up. Get a couple of 3/16 or #10 vinyl screw thread protectors at the hardware store and slip them over the ends of the open tubing to keep the fluid in and dirt out.
Attach file:
(8.68 KB)This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=112507