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BRAKES 5-55
4. Secure exhaust valve body (5) into valve body (10)
with ring (4).
5. Secure diaphragm (3) and retainer (2) to exhaust
valve body (5) with screw (1).
6
. Invert valve body (10).
7. Install seal (13) on piston (14). Install seal (12) on
piston (14).
8
. Install coil spring (11) into valve body (10).
9. Install piston assembly (14) into valve body (10) and
secure with snap ring (15).
10. Secure mounting bracket (16) to valve body (10) with
bolts (19) and lock washers (20).
11. Install plunger (17) into mounting bracket (16).
12. Install boot (18) on plunger (17).
Tests and Adjustments of Rebuilt Unit
Tests
If facilities are available, the rebuilt brake valve can
be tested on a suitable test rack. If such facilities are
not available, the brake valve can be tested on the
vehicle.
Both operating and leakage tests must be made in
either case to make certain the brake valve meets the
following specifications:
1. The brake valve must deliver approximately full
reservoir pressure when the pedal is fully de
pressed. If this test is being made on a vehicle and
brake valve does not deliver approximately full
reservoir pressure, check to see if the pedal ad
justment linkage is causing any interference.
2. The brake valve must control delivered pressures
between approximately 5 and 75 psi. These pres
sures must rapidly vary in accordance with the
position in which the pedal is held.
3. Leakage at the exhaust port in both the fully applied
or fully released positions must not exceed a one-
inch soap bubble in three seconds.
4. No leakage is permissible at any other point on the
brake valve with the pedal in the depressed position.
Adjustments
If the brake valve does not release promptly, or does
not fully release, it indicates that the exhaust valve is
not operating sufficiently. This can be caused by:
1. Insufficient exhaust valve to valve seat clearance.
2. Improper adjustment of the brake pedal push rod.
3. Lack of lubrication in the body causing the piston
and spring assembly to bind.
4. Binding pedal and/or linkage.
If the brake valve does not apply promptly, or does not
apply fully, it indicates that the inlet valve is not opening
sufficiently. This can be caused by:
1. Improper adjustment of the linkage, which does not
permit the piston to travel far enough when the brake
is being applied.
2. Binding pedal and/or linkage.
If the brake valve does not graduate the delivered pres
sure properly check to be sure the bleed hole to the
cavity immediately below the piston is not restricted.
Installation
1. Mount brake valve in position, install mounting bolts
and tighten.
2. Connect air lines to brake valve.
3. Test operation thoroughly.
4. Adjust brake pedal free play as outlined in this
section under Push Rod to Main Cylinder Adjustment.
QUICK RELEASE VALVE
Removal
1. Disconnect air lines at quick release valve (fig.
8 6
).
2. Remove mounting bolts and remove valve.
Disassembly
Remove all dirt and grease from exterior of valve,
using cleaning solvent and a brush. Inspect exterior of
valve for broken or damaged parts. All broken or dam
aged parts must be replaced.
Unscrew cover, lift out diaphragm spring, diaphragm
spring seat and diaphragm (fig. 87).
Cleaning and Inspection of Parts
Wash all metal parts in cleaning solvent.
B O D Y
S P R IN G
C O V E R
Fig. 86—Q u ic k Release V a lv e Installed
Fig . 87—Q u ick Release V a lv e Components
CHEVROLET TRUCK SERVICE M ANUAL
A.
Содержание 10 Series 1967
Страница 1: ...CHASSIS V3 a n s W U gw...
Страница 2: ......
Страница 28: ......
Страница 39: ...HEATER AND AIR CONDITIONING 1A 11 EVAPORATOR OUTLET Fig 20 Airflow Schematic CHEVROLET TRUCK SERVICE MANUAL...
Страница 80: ...BODY IB 18 Fig 41 Exploded View of Level Ride Seat CHEVROLET TRUCK SERVICE MANUAL...
Страница 89: ...BODY IB 27 CHEVROLET TRUCK SERVICE MANUAL...
Страница 105: ...BODY IB 43 Fig 94 Check Link Assembly Typical CHEVROLET TRUCK SERVICE MANUAL...
Страница 117: ...BODY IB 55 Fig 116 A uxiliary Seat CHEVROLET TRUCK SERVICE MANUAL...
Страница 121: ...Fig 4 1 0 3 0 Series Truck Frame...
Страница 122: ...Fig 5 4 0 6 0 Single A xle Truck Frames Exc T ilt Cab FRAME 2 4...
Страница 124: ...CHEVROLET TRUCK SERVICE MANUAL 1 Ficu 7 4 0 6 0 Series T ilt Cab Truck Frames FRAME 2 6...
Страница 128: ...CHEVROLET TRUCK SERVICE MANUAL Fig 8 Underbody Reference Points and Dimensions Chevy Van G10 and 20 FRAME 2 10...
Страница 207: ...REAR SUSPENSION AND DRIVE LINE 4 49 Fig 91 Tandem Rear Axles and Power Divider CHEVROLET TRUCK SERVICE MANUAL...
Страница 228: ...BRAKES 5 12 TD 50 60 Fig 23 Parking Brake Cables T Models CHEVROLET TRUCK SERVICE MANUAL...
Страница 280: ......
Страница 324: ...I I...
Страница 336: ...ENGINE FUEL 6M 12 CHEVROLET TRUCK SERVICE MANUAL...
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Страница 393: ...CHEVROLET TRUCK SERVICE MANUAL CLUTCHES AND TRANSMISSIONS 7 7...
Страница 452: ...FUEL TANK AND EXHAUST SYSTEMS 8 6 Fig 7 Fuel Lines and Filter CD50 60 CHEVROLET TRUCK SERVICE MANUAL...
Страница 472: ...STEERING 9 18 Fig 31 Typical Power Steering Hose Routing CHEVROLET TRUCK SERVICE MANUAL...
Страница 474: ...w j...
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Страница 500: ...1...
Страница 502: ...l c t r iC al 12 2...
Страница 506: ...ELECTRICAL BODY AND CHASSIS 12 6 VIEW C Fig 9 Front Lighting Assemblies CHEVROLET TRUCK SERVICE MANUAL...
Страница 532: ...ELECTRICAL BODY AND CHASSIS 12 32 Fig 42 Engine Compartment PT 20 30 CHEVROLET TRUCK SERVICE MANUAL...
Страница 535: ...ELECTRICAL BODY AND CHASSIS 12 35 Fig 45 Engine Compartment CS40 50 60 MS60 CHEVROLET TRUCK SERVICE MANUAL...
Страница 561: ...ELECTRICAL BODY AND CHASSIS 12 61 18 DG 18 DG Fig 71 Instrument Panel G A 10 20 CHEVROLET TRUCK SERVICE MANUAL...
Страница 562: ...ELECTRICAL BODY AND CHASSIS 12 62 Fig 72 Engine and Tail Lamps G A 10 20 CHEVROLET TRUCK SERVICE MANUAL...
Страница 566: ...ELECTRICAL BODY AND CHASSIS 12 66 Fig 76 Engine Compartment SE50 60 CHEVROLET TRUCK SERVICE MANUAL...
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Страница 580: ...1...
Страница 587: ...SPECIFICATIONS 7 ENGINE SECTION 6 8 25 1 on CE TE400 Series CHEVROLET TRUCK SERVICE MANUAL...
Страница 590: ...SPECIFICATIONS 10 ENGINE TORQUES CHEVROLET TRUCK SERVICE MANUAL...