BENDIX MC-12 MODULATOR CONTROLLER ASSY Anleitung zur Fehlerbehebung Seite 13
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Reservoirs and Components
Reservoirs
are available
in many
confi gurations.
Reservoirs (or “air tanks”) serve the air brake system
as a storage tank for compressed air. The reservoir
size is selected by the vehicle manufacturer to provide
an adequate amount of air for use by the braking
system and other control devices.
Bendix reservoirs are built in accordance with SAE
specifi cations and are available in various sizes in both
single and double compartment design confi gurations,
and are certifi ed to comply with government regulations
(such as FMVSS 121).
Reservoir draining devices are installed in air brake
reservoirs, and allow liquid contaminants collected
to be drained off. Vehicles without air dryers are
normally drained each day. Vehicles which have
Bendix desiccant air dryers should be drained every
30-90 days. [Tip: The presence of water may indicate
that the air dryer cartridge may need to be replaced.
Other potential sources of water in the reservoirs are:
when shop air has been used to fi ll the system, an
excessive duty cycle, or excessive air leakage.]
Manual draining devices consist of drain cocks which
require manual operation at the point at which they are
installed. Drain cocks are available in various styles
and pipe thread sizes. [Tip: Always drain contents
slowly for best results.]
The Bendix
®
DV-2
™
automatic reservoir drain valve is
a completely automatic draining device. It is installed
directly into the end or bottom drain port of the reservoir
and does not require any additional control lines. It is
available in either an end-port or bottom-port version,
and with or without a (12v or 24v) heater. These are
most suitable for systems without a desiccant air dryer.
Single Che ck Valves
The in-line single check valve allows air fl ow in one
direction only. Several sizes and configurations
are available to accommodate various piping
arrangements. Single check valves are used in air
brake systems to prevent loss of remaining system
pressure if another reservoir, or hose etc. upstream
in the system fails.
For double check valves and pressure protection
valves, see page 14.
Low Pressure Indicators
Low pressure indicators are pressure-operated electro-
pneumatic switches that are designed to complete an
electrical circuit and actuate a warning light and buzzer
for the driver in the event air pressure in the service
brake system is below a minimum level for normal
operation. The low pressure indicator is available in
various pressure settings, is not adjustable, and is
generally used in conjunction with a dash mounted
warning lamp or warning buzzer or both.
Drain
Cock
SC-3
™
Single
Check
Valves
DV-2
™
Automatic Drain Valve
LP-3
™
Low
Pressure
Indicator
- Air Brake Handbook 1
- The Air Brake Handbook 3
- Device Index 4
- Handbook Section Index 5
- General Precautions 6
- Section 1: An Overview 7
- Bendix Air Compressors 8
- Compressors 10
- Concerns? 11
- Governors and Components 12
- Reservoirs and Components 13
- Air Dryers 14
- Air Dryers and Filters 15
- Dual Circuit Brake Valves 17
- Actuators 19
- Slack Adjusters 20
- Foundation Brakes 21
- Foundation Brakes, continued 22
- Quick Release, Ratio Valves 23
- Ratio, Proportioning Valves 24
- Relay Valves 25
- Push-Pull Valves 26
- Spring Brake Valves 27
- Lever Operated Control Valves 28
- Additional Control Valves 29
- Park Co ntrol Valves 30
- Emergency Systems 30
- Dash Control Modules 31
- Tractor Pr otection Valves 32
- Trailer Spring Brake Valves 33
- ABS Components 37
- Truck a nd Tractor ABS 38
- Operation 38
- ATC Operation 39
- Advanced ABS 40
- Advanced ABS Features 42
- Trailer ABS Components 43
- Trailer ABS Operation 43
- “Curb-Side” 44
- “Driver-Side” 44
- Controllers with PLC 45
- Troubleshooting ABS 46
- A - Display 48
- B - Receiver 48
- C - Sensor 48
- Bendix M odules 49
- Pre-Trip Safety 49
- Inspections 49
- Fan Clutches 49
- Friction 50
- Braking Force 50
- Leverage 52
- Deceleration 53
- Deceleration (continued) 54
- Properties of Compressed Air 55
- The Fundamentals of 57
- Compressed Air Brakes 57
- S-Cam and Air Disc Brakes 58
- Air Brake System Balance 59
- II. Mechanical Systems 60
- NOTE: The EC-60 62
- Contact Bendix 65
Verwandte Produkte und Handbücher für Modulator BENDIX MC-12 MODULATOR CONTROLLER ASSY
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