1969 GMC S4500 Recalls (2)

Campaign:: 70V097000 on 10/11/1979
Component:: Service brakes, hydraulic:foundation components:master cylinder
Affected:: 21,000
Notes:: Possibility that cover on dual hy- draulic brake master cylinder may becomedistorted due to excessive tightening of attachment bolt.if this conditionexists, brake fluid may leak from under cover and excessive loss of brake fluidcould result in reduced brake efficiency.(correct by replacing with newimproved type cover.)
Campaign:: 70V016000 on 10/11/1979
Component:: Service brakes, hydraulic:foundation components:hoses, lines/piping, and fittings
Affected:: 25,950
Notes:: Possibility that during operation steel brake line at rear axle could chafe onleft rear shock absorber, and that front brake hoses on school buses maycontact tire, shock absorber or steering arm.continued chafing could wearhole in hose or line at point of contact, causing loss of hydraulic brakefluid.(correct by inspecting and re-routing steel line and adding additionalclip to hold hose.)