M38 Master Cylinder

[Bob Carriere]

On the a brand new system in my C15A I opted to use the Purple army surplus synthetic brake fluid years ago without any leaks, swelling, etc...... easy to bleed with a vacuum pump..... mine is due for it annual flushing..... suck the old stuff from the individual wheels until I get clear purple color coming out... then adjust each wheel, both bottom and mid cams, while the truck is on jack stand. A good opportunity to check each and every nut on springs, all u-joint bolts, etc. and verify fluid levels in axles, T case and tranny. Engine gets SHell T4 diesel oil and fresh dual PH 8 oil filters. Usually takes me a full Saturday.

Cheers