Chevrolet 10 series 1973, Overhaul Manual

Page: 104 / 522

BRAKES 5-1
SECTION 5
BRAKES
The following caution applies to one or more steps in the assembly
procedure of components in this portion of the manual as indicated at
appropriate locations by the terminology "See Caution on page 1 of this
section."
CAUTION: TH IS FASTENER IS AN IMPORTANT ATTACHING
PART IN THAT IT COULD AFFECT THE PERFORMANCE OF
VITAL COMPONENTS AND SYSTEM S, AND /OR COULD RESU LT
IN MAJOR REPAIR EXPENSE. IT M U ST BE REPLACED W ITH
ONE OF THE SAM E PART NUMBER OR WITH AN EQU IVALENT
PART IF REP LA CEM ENT BECOMES NECESSA R Y. DO NOT USE A
REPLACEM ENT PART OF LESSER QUALITY OR SUBSTITUTE
DESIGN. TORQUE VALUES M U ST BE USED A S SPECIFIED
DURING REASSEM BLY TO ASSU RE PROPER RETENTION OF
THIS PART.
CO NTENTS OF THIS SECTION
Power Brake Cylinder Single Diaphragm (Delco Moraine) 5-1
Power Brake Cylinder Dual Diaphragm (Delco M oraine). 5-9
Power Brake Cylinder Single Diaphragm (Bendix)......................5-19
Power Brake Cylinder Dual Diaphragm (Bendix).........................5-24
Vacuum Booster, Single Diaphragm (Bendix)......................... ........5-32
Special Tools................................................................................................5-37
DELCO-MORAINE POWER BRAKE CYLINDER
SINGLE DIAPHRAGM TYPE
INDEX
Disassembly..................................................................................................5-1
Cleaning.........................................................................................................5-5
Inspection......................................................................................................5-5
Assembly........................................................................................................5-5
Disassembly
OVERHAUL OPERATIONS
The following procedure applies to the power section of
the power brake unit only (fig. 1A). For service of the
master cylinder refer to applicable portion in the
"Service" manual.
1. Scribe across outer edge of both housings and
across mounting bracket flanges to provide a guide
mark for reassembly.
2. Remove master cylinder attaching nuts and set
master cylinder aside.
3. Attach base of Tool J-22805 to front housing with
nuts and washers and draw down tight to eliminate
bending or damage to studs. Clamp base in bench
vise with power section up (fig. 2A).
4. Separate front and rear housings as follows:
a. Straight Mounting Bracket, and Chevelle (Fig.
OVERHAUL MANUAL