BENDIX TCH-003-049A Benutzerhandbuch
Technical
Bulletin
Bulletin No: TCH-003-049
Effective Date: 10/18/05
Cancels: N/A
Page: 1 of 4
Subject:
Flood Damage: Bendix Recommended Procedure for Power Vehicles
that may have been Submerged.
continued over
AIR BRAKE SYSTEM INSPECTION
In all other cases where the power vehicle or
components have been submerged in fresh water,
the recommended steps depend upon what is found
during the following inspections. If the vehicle was in a
coastal area and you are not certain whether the water
submergence was by fresh water or salt (sea) water,
our recommendation is to follow the guidelines for salt
water submergence above. A separate section in this
Bulletin covers inspections for the ABS system.
While it is not the scope of this Bulletin to address
While it is not the scope of this Bulletin to address
anything beyond the air brake control system of
the power vehicle, as a useful first step, Bendix
Commercial Vehicle Systems LLC recommends that
a thorough power-washing of the power vehicle,
including the foundation brakes, will assist the
technician in determining the condition of the vehicle
components. Follow usual chassis re-lubrication
measures (including re-greasing of slack adjusters)
after power-washing.
To check for evidence of water or contamination,
mark and remove the connectors at the first valve in
the system from the front. Inspect the valve for water
and contaminants. Carefully use air pressure to blow
air through the hoses and watch for evidence of water
or contamination.
CAUTION: Take all necessary
precautions for safety of the technician and others
in the work area during this procedure, including
use of appropriate eye protection.
If evidence of water or contamination is found, go
If evidence of water or contamination is found, go
to Section A below.
Continue to inspect all the valves in the air brake
Continue to inspect all the valves in the air brake
system, removing one control (or supply in the case of
quick release valves) and delivery hose from each of
the valves and inspect to determine if there is evidence
of water or contamination.
If evidence of water or
contamination is found, follow the instructions
under Section A.
If no evidence of water or contamination is found in
If no evidence of water or contamination is found in
any of the valves or hoses, follow the braking system
inspections shown in Section B.
This Bulletin provides a recommended procedure for the inspection and (where possible) reconditioning of the air
brake control system components on power vehicles (Trucks, Tractors, and Buses) that have been submerged
in flood waters. See Bulletin TCH-003-048 for Trailer and Dolly recommended inspections.
CAUTION: Take all appropriate safety measures when working in conditions where hazardous
CAUTION: Take all appropriate safety measures when working in conditions where hazardous
waste, etc. may be present, including appropriate eye protection, gloves and masks. See the General
Precautions section at the end of this Bulletin for recommended standard maintenance safety practices for
normal conditions.
SALT (SEA) WATER IMMERSION
Bendix Commercial Vehicle Systems LLC recommends immediate replacement of
all power vehicle pneumatic air brake valves that have been submerged in salt (sea)
water to avoid any immediate or future operational issues as a result of internal corrosion.
Due to the extremely corrosive nature of salt water and the inherent removal of valve
lubrication, sudden and premature valve malfunction can result. Vehicle components
recommended to be replaced include air compressors, reservoir(s), relay valves, spring
brake valves, ABS relay-modulators and brake actuators. If the air brake components
are being replaced, there is no need to conduct the Air Brake System Inspections below,
instead go to the sections for ABS System inspections and also the “General” heading
for steps in restoring the vehicle to service.