Special Tools - Chevrolet 1973 Overhaul Manual

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 A N IM PO RTANT ATTACH ING
P A R T IN TH AT IT COULD AFFECT THE PERFORM ANCE OF
VITAL COM PONENTS AND SYSTEM S, AN D /O R COULD R E SU L T
IN M AJOR REPAIR EXPENSE. IT M U ST BE REPLACED W ITH
ONE OF THE SAM E P A R T NUM BER OR WITH A N EQ U IV ALE N T
P A R T IF REP LA CEM ENT BECOM ES NECESSA R Y. DO NO T USE A
REPLAC EM EN T P A R T OF LE SSER Q U ALITY OR SU BSTITU TE
DESIGN. TORQUE VALUES M U ST BE USED A S SPECIFIED
DURING R E A SSE M B L Y TO A SSU R E PROPER RETEN TIO N OF
TH IS PART.
Power Brake Cylinder Single Diaphragm (Delco Moraine)
Power Brake Cylinder Dual Diaphragm (Delco M oraine).
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
Disassembly..................................................................................................5-1
Cleaning................................................................................................. ........5-5
Inspection......................................................................................................5-5
Assembly........................................................................................................5-5
Disassembly
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.
SECTION 5
BRAKES
CONTENTS OF THIS SECTION
SINGLE DIAPHRAGM TYPE
INDEX
OVERHAUL OPERATIONS
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.
BRAKES 5-1
5-1
5-9
OVERHAUL MANUAL