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Brake issue on a lull 644 TT -34 highlander2

B

Bobbyssrx

Member
Joined
Aug 16, 2015
Messages
6
Location
Ct
Would someone know why when I push my brake pedal on the brake pedal doesn't come back up unless you pull it. It's a 1980 machine. I put a new hydro vac on it also. Any info would be greatly appreciated. Thanks Rob!
 
D

Delmer

Senior Member
Joined
Jan 3, 2013
Messages
8,891
Location
WI
I don't know specifically about a Lull, but every other master cylinder I've ever seen has springs inside the cylinder, and usually a spring on the pedal.

Either the spring is broken, or the bore is rusted, or the cups are swollen, possibly from using oil instead of brake fluid, or vice versa.
 
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