Brake Master Cylinder - Revision history

DeanG: /* Cleaning up the Rust and Flaking Paint */

2013-01-01T16:46:38Z

‎Cleaning up the Rust and Flaking Paint

2013-01-01T16:44:27Z

‎Rebuilding the Master Cylinder

2013-01-01T16:33:00Z

‎Bleeding the Brakes

2013-01-01T16:32:49Z

‎Bleeding the Brakes

2013-01-01T16:32:25Z

‎Bleeding the Brakes

2013-01-01T16:31:32Z

‎Removing the low brake fluid sensor

2013-01-01T16:30:09Z

‎Rebuilding the Master Cylinder

2013-01-01T16:26:57Z

‎Separating the Reservoir from the Master Cylinder

2013-01-01T16:26:41Z

‎Separating the Reservoir from the Master Cylinder

2013-01-01T16:26:25Z

‎Unbolting the Master Cylinder

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 === Cleaning up the Rust and Flaking Paint ===
-I cleaned the old brake fluid and gunk with a rubbing alcohol.  Remove the plunger from the vacuum booster prior to attacking the area with a wire brush.  A wire cup probably mounted in a drill as it looks like it will do the trick. Next is a bit more cleaning followed by a coat of Ospho to neutralize the rust.  A bit of semi-gloss black paint should be enough to make the show and shine happy.<br><br>
+I cleaned the old brake fluid and gunk with a rubbing alcohol.  Remove the plunger from the vacuum booster prior to attacking the area with a wire brush.  A wire cup mounted in a drill did the trick. Next I did a bit more cleaning followed by a coat of Ospho to neutralize the rust.  A bit of semi-gloss black paint made it nice enough to make the show and shine happy.<br><br>
 === Putting it all back together ===

← Older revision		Revision as of 16:44, 1 January 2013
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	'''Note:''' When sending out the master cylinder don't send anything that is not intended to be rebuilt. Remove plungers, seals for the reservoir and etc. It is easy for a re-builder to loose these items.		'''Note:''' When sending out the master cylinder don't send anything that is not intended to be rebuilt. Remove plungers, seals for the reservoir and etc. It is easy for a re-builder to loose these items.
		+	<br><br>

	=== Cleaning up the Rust and Flaking Paint ===		=== Cleaning up the Rust and Flaking Paint ===

← Older revision		Revision as of 16:33, 1 January 2013
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	I then waited until a fair amount of brake fluid had accumulated in the catch can. This took about 15 minutes for each caliper. Fortunately I have a lot to work on with the car so I wasn’t just sitting and waiting to top up the reservoir.<br><br>		I then waited until a fair amount of brake fluid had accumulated in the catch can. This took about 15 minutes for each caliper. Fortunately I have a lot to work on with the car so I wasn’t just sitting and waiting to top up the reservoir.<br><br>
−
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−	~~''To be continued.''~~
−	~~<br><br>~~

	== Also See ==		== Also See ==

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 # Applying caliper grease around the threads of the caliper bleed nipple
 # Attaching a hose leading from a caliper bleed nipple into a catch can
 # Loosening the bleed screws <br><br>

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 To bleed the system I ended up loosening both side mounted brake pipes until fluid came drooling out.  After tightening these brake pipes I gravity bled the system by going around the car to each caliper in turn and:<br><br>
-Applying caliper grease around the threads of the caliper bleed nipple<br>
+# Applying caliper grease around the threads of the caliper bleed nipple
-Attaching a hose leading from a caliper bleed nipple into a catch can <br>
+# Attaching a hose leading from a caliper bleed nipple into a catch can
-Loosening the bleed screws <br><br>
+# Loosening the bleed screws <br><br>
 I then waited until a fair amount of brake fluid had accumulated in the catch can.  This took about 15 minutes for each caliper.  Fortunately I have a lot to work on with the car so I wasn’t just sitting and waiting to top up the reservoir.<br><br>

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 # Unplug the low brake fluid sensor from the harness
-# Pry off the black plastic cap.  Be careful it pops right off.  - I still haven't found mine.  It is only available b purchasing a new reservoir.  Hopefully it is a standard 1990s junkyard part.
+# Pry off the black plastic cap.  Be careful it pops right off.  - I still haven't found mine.  It is only available by purchasing a new reservoir.
 # Pull the guts of the sensor straight up.  Only the black plastic cap holds in on so this is easy.
 <br>

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 === Rebuilding the Master Cylinder ===
-New Federal master cylinder are not available.  I will try to find an acceptable GM replacement.  I will also send out my old unit to White Post Restorations for a rebuild.  They are a reputable company with fast service.
+New Federal master cylinder are not available.  I was unable to find an acceptable GM replacement.  I sent out my old unit to White Post Restorations for a rebuild.  They are a reputable company with fast service.
+<br><br>
 === Cleaning up the Rust and Flaking Paint ===

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 Attempt to break the seal between the rubber gasket and the reservoir.  Wiggle the reservoir around a bit.  Gently pry between the plastic reservoir base and the rubber gaskets.  Insert a tool (I used a ratchet handle) between the 2 parts forward of the forward most gasket and apply force.  The forward part of the reservoir will pop out.  Swing it out of the way and pry more toward the back gasket.  A fair amount of force was necessary to achieve separation.
-<br><br>
+<br>
 === Undoing the Hydraulic Pipes ===

← Older revision		Revision as of 16:26, 1 January 2013
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	Attempt to break the seal between the rubber gasket and the reservoir. Wiggle the reservoir around a bit. Gently pry between the plastic reservoir base and the rubber gaskets. Insert a tool (I used a ratchet handle) between the 2 parts forward of the forward most gasket and apply force. The forward part of the reservoir will pop out. Swing it out of the way and pry more toward the back gasket. A fair amount of force was necessary to achieve separation.		Attempt to break the seal between the rubber gasket and the reservoir. Wiggle the reservoir around a bit. Gently pry between the plastic reservoir base and the rubber gaskets. Insert a tool (I used a ratchet handle) between the 2 parts forward of the forward most gasket and apply force. The forward part of the reservoir will pop out. Swing it out of the way and pry more toward the back gasket. A fair amount of force was necessary to achieve separation.
		+
		+	<br><br>

	=== Undoing the Hydraulic Pipes ===		=== Undoing the Hydraulic Pipes ===

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 This was another tough job.  The nuts are a thin variety of lock nut.  The right nut was easily accessible.  The left was blocked by 2 of the brake lines.
-The lock nuts looked good until I removed them.  They were a bit chewed up looking after removal.  Plan on replacing them with elastic stop nuts 8mm x 1.25
+The lock nuts looked good until I removed them.  They were a bit chewed up looking after removal.  I replacing them with elastic stop nuts 8mm x 1.25
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