BRAKES 5-4
DUO-SERVO
TWINPLEX
Fig. 6 —Duo-Servo and Twinplex W h ee l Cylinders
1. Push Rod
2. Boot
3. Piston
4. Piston Cup
5. Spring
6. Housing
7. Spring
shoes are always primary shoes, self-energizing in
either direction of drum rotation. Brake anchor supports,
bolted to the axle housing flange in conjunction with the
flange plate, have removable slotted anchor pins at the
shoe heels and adjusting screws at the shoe toes which
act as anchors in the reverse direction of rotation. Each
adjusting screw is threaded into or out of its support by
means of an adjusting wheel. Brakes are accessible for
adjustment through adjusting slots in the flange plate.
WHEEL CYLINDERS
Four types of wheel cylinders are used on Chevrolet
Trucks. Wheel cylinders are identified with type of brake
with which they are used (figs.
6
and 7). On Duo-Servo
Fig. 7—W h eel C ylinders Used w ith Types *‘F ” and
“ FR-3” Brakes
1. Boot
2. Brake Shoe G u id e
3. Piston
4. Piston Cup
5. Cup F ille r
6. Piston Spring
7. C ylin d er
8. Brake Shoe Anchor
Slot
9. Push Rod
brakes, wheel cylinder housing construction varies on
different models, however, internal construction is the
same as illustrated in Figure
6
.
On Duo-Servo brakes one wheel cylinder is used at
each brake, mounted on the flange plate between upper
ends of brake shoes as shown in Figure 2. On Twinplex
and Wagner, “ F ” and “ FR -3” type brakes, two cylinders
are used at each brake, mounted on the flange plate be
tween shoe ends as shown in Figures 3, and 4, and 5.
A bleeder valve for purging air from the hydraulic
TYPE "FR-3”
TYPE "F*
G10-20
SW IT C H
CA-KA-PA10, CA30
PA20-30
S W ITC H
S W ITC H
Fig . 8—-Brake Pipe Distribution and Sw itch Assembly
CHEVROLET TRUCK SERVICE M ANUAL
Summary of Contents for 10 Series 1967
Page 1: ...CHASSIS V3 a n s W U gw...
Page 2: ......
Page 28: ......
Page 80: ...BODY IB 18 Fig 41 Exploded View of Level Ride Seat CHEVROLET TRUCK SERVICE MANUAL...
Page 89: ...BODY IB 27 CHEVROLET TRUCK SERVICE MANUAL...
Page 105: ...BODY IB 43 Fig 94 Check Link Assembly Typical CHEVROLET TRUCK SERVICE MANUAL...
Page 117: ...BODY IB 55 Fig 116 A uxiliary Seat CHEVROLET TRUCK SERVICE MANUAL...
Page 121: ...Fig 4 1 0 3 0 Series Truck Frame...
Page 122: ...Fig 5 4 0 6 0 Single A xle Truck Frames Exc T ilt Cab FRAME 2 4...
Page 124: ...CHEVROLET TRUCK SERVICE MANUAL 1 Ficu 7 4 0 6 0 Series T ilt Cab Truck Frames FRAME 2 6...
Page 228: ...BRAKES 5 12 TD 50 60 Fig 23 Parking Brake Cables T Models CHEVROLET TRUCK SERVICE MANUAL...
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Page 324: ...I I...
Page 336: ...ENGINE FUEL 6M 12 CHEVROLET TRUCK SERVICE MANUAL...
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Page 393: ...CHEVROLET TRUCK SERVICE MANUAL CLUTCHES AND TRANSMISSIONS 7 7...
Page 472: ...STEERING 9 18 Fig 31 Typical Power Steering Hose Routing CHEVROLET TRUCK SERVICE MANUAL...
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Page 587: ...SPECIFICATIONS 7 ENGINE SECTION 6 8 25 1 on CE TE400 Series CHEVROLET TRUCK SERVICE MANUAL...
Page 590: ...SPECIFICATIONS 10 ENGINE TORQUES CHEVROLET TRUCK SERVICE MANUAL...