Current through Register Vol. 56, No. 24, December 18, 2024
(a) The
number of defective brakes is equal to or greater than 20 percent of brakes on
the vehicle or combination. Steering axle brakes are to be included in the 20
percent criterion. A defective brake includes any brake that meets one of the
following criteria:
1. Absence of effective
braking action upon application of the service brakes, such as brake linings
failing to move or contact breaking surface upon application. This is a
category 2 violation. The penalty for this violation shall be $ 200.00 per
wheel.
2. Missing or broken
mechanical components including: shoes, linings, pads, springs, anchor pins,
spiders, cam rollers, pushrods, and air chamber mounting bolts. This is a
category 2 violation. The penalty for this violation shall be $ 200.00 per
wheel.
3. Loose brake components
including: air chambers, spiders, and cam shaft support brackets. This is a
category 2 violation. The penalty for this violation shall be $ 200.00 per
wheel.
4. Audible air leak at brake
chamber. (Example: ruptured diaphragm, loose chamber clamp.) This is a category
2 violation. The penalty for this violation shall be $ 100.00 per
wheel.
5. Brake adjustment limits.
Bring reservoir pressure between 90 and 100 psi, turn engine off and then fully
apply the brakes.
i. One brake at 1/4 inch or
more above the adjustment limit. (Example: Type 30 clamp type brake chamber
pushrod measured at 2 1/4 inches would be one defective brake.) This is a
category 2 violation. The penalty for this violation shall be $ 100.00 per
brake.
ii. Two brakes less than 1/4
inch beyond the adjustment limit also equal one defective brake. (Example: Type
30 clamp type brake chamber pushrods measure--two at 2 1/8 inches.) This
example would equal one defective brake. This is a category 2 violation. The
penalty for this violation shall be $ 100.00 per brake.
iii. Any wedge brake where the combined brake
lining movement of both top and bottom shoe exceeds 1/8 inch. This is a
category 2 violation. The penalty for this violation shall be $ 100.00 per
brake.
6. Brake linings
or pads, except on power unit steering axles.
i. Cracked, loose, or missing lining. Any
violation under (a)6i(1), (2), (3) or (4) below is a category 2 violation. The
penalty for each violation shall be $ 300.00 per wheel. Missing lining, under
(a)6i(5) below, is a category 1 violation. The penalty for this violation shall
be $ 2,000 per wheel.
(1) Lining cracks or
voids of 1/16 inch in width observable on the edge of the lining.
(2) Portions of a lining segment missing such
that a fastening device (trivet or bolt) is exposed when viewing the lining
from the edge.
(3) Cracks that
exceed 1 1/2 inches in length.
(4)
Loose fitting segments. (Approximately 1/16 inch or more movement.)
(5) Complete lining segment
missing.
ii. The
following chart shall be adhered to in determining brake adjustment limits, and
is incorporated herein by reference.
COMMERCIAL VEHICLE SAFETY ALLIANCE |
NORTH AMERICAN UNIFORM OUT-OF-SERVICE
CRITERIA |
BRAKE ADJUSTMENT REFERENCE CHART |
Reference: Paragraph 1.a. of Part II of the
Out-of-Service Criteria Brake |
Adjustment: Shall not exceed those specifications
contained hereunder |
relating to "Brake Adjustment Limit." (Dimensions are
in inches.) |
CLAMP TYPE BRAKE CHAMBER
DATA |
Type | Outside
Diameter | Brake Adjustment Limit |
6 | 4 1/2 | 1 1/4 |
9 | 5 1/4 | 1 3/8 |
12 | 5 11/16 | 1 3/8 |
16 | 6 3/8 | 1 3/4 |
20 | 6 25/32 | 1 3/4 |
24 | 7 7/32 | 1 3/4 |
30 | 8 3/32 | 2 |
36 | 9 | 2 1/4 |
NOTE: A brake found at the adjustment limit
is not a violation. |
'LONG STROKE' CLAMP TYPE BRAKE
CHAMBER DATA |
Type | Outside
Diameter | Brake Adjustment Limit |
16 | 6 3/8 | 2.0 |
20 | 6 25/32 | 2.0 |
24 | 7 7/32 | 2.0 |
24* | 7 7/32 | 2.5 |
30 | 8 3/32 | 2.5 |
*For 3 inch maximum stroke type 24
chambers |
NOTE: A brake found at the adjustment limit
is not a violation. |
TIE ROD STYLE PISTON BRAKE CHAMBER
DATA |
Type | Outside
Diameter | Brake Adjustment Limit |
30 | 6 1/2 (165 mm) | 2.5 (64 mm) |
NOTE: A brake found at the adjustment limit
is not a violation. |
BOLT TYPE BRAKE CHAMBER
DATA |
Type | Outside
Diameter | Brake Adjustment Limit |
A | 6 15/16 | 1 3/8 |
B | 9 3/16 | 1 3/4 |
C | 8 1/16 | 1 3/4 |
D | 5 1/4 | 1 1/4 |
E | 6 3/16 | 1 3/8 |
F | 11 | 2 1/4 |
G | 9 7/8 | 2 |
NOTE: A brake found at the adjustment limit
is not a violation. |
ROTOCHAMBER DATA |
Type | Outside
Diameter | Brake Adjustment Limit |
9 | 4 9/32 | 1 1/2 |
12 | 4 13/16 | 1 1/2 |
16 | 5 13/32 | 2 |
20 | 5 15/16 | 2 |
24 | 6 13/32 | 2 |
30 | 7 1/16 | 2 1/4 |
36 | 7 5/8 | 2 3/4 |
50 | 8 7/8 | 3 |
NOTE: A brake found at the adjustment limit
is not a violation. |
DD-3 BRAKE CHAMBER DATA |
Type | Outside
Diameter | Brake Adjustment Limit |
30 | 8 1/8 | 2 1/4 |
NOTE: This chamber has three air lines and
is found on motor coaches. |
NOTE: A brake found at the adjustment limit
is not a violation. |
WEDGE BRAKE DATA |
The combined movement of both brake shoe lining scribe
marks shall not |
exceed 1/8 inch (3.18 mm). |
iii. Evidence of oil seepage into or out of
the brake lining/drum interface area. This must include wet contamination of
the lining edge accompanied by evidence that further contamination will
occur--such as oil running from the drum or a bearing seal. Grease on the
lining edge, back of shoe, or drum edge and oil stains with no evidence of
fresh oil leakage are not conditions for out-of-service. This is a category 2
violation. The penalty for this violation shall be $ 300.00 per
wheel.
iv. Air brakes: Lining with
a thickness less than 1/4 inch or to wear indicator, if lining is so marked,
measured at the shoe center for drum brakes or less than 1/8 inch for disc
brakes. This is a category 1 violation. The penalty for this violation shall be
$ 500.00 per wheel.
v. Hydraulic
and electric brakes: Lining with a thickness 1/16 inch or less at the shoe
center for disc or drum brakes. This is a category 1 violation. The penalty for
this violation shall be $ 500.00 per wheel.
7. Missing brake on any axle required to have
brakes. This is a category 1 violation. The penalty for this violation shall be
$ 5,000 per wheel.
(b)
In addition to being included in the 20 percent criterion, the following
criteria pertaining to steering axle brakes place a vehicle in an
out-of-service condition:
1. Absence of
effective braking action on any steering axle of any vehicle required to have
steering axle brakes. This is a category 2 violation. The penalty for this
violation shall be $ 400.00 per wheel.
2. Mismatch across any power unit steering
axle of:
i. Air chamber sizes. This is a
category 1 violation. The penalty for this violation shall be $ 1,000 per
wheel.
ii. Slack adjuster length.
This is a category 1 violation. The penalty for this violation shall be $ 1,000
per wheel.
3. Brake
linings or pads on the steering axle of any power unit:
i. Cracked, loose or missing lining. Any
violation under (b)3i(1), (2), (3) or (4) below is a category 2 violation. The
penalty for each violation shall be $ 500.00 per wheel. Missing lining, under
(b)3i(5) below, is a category 1 violation. The penalty for this violation shall
be $ 3,000 per wheel.
(1) Lining cracks or
voids 1/16 inch in width observable on the edge of the lining.
(2) Portions of a lining segment missing such
that a fastening device (rivet or bolt) is exposed when viewing the lining from
the edge.
(3) Cracks that exceed 1
1/2 inches in length.
(4) Loose
lining segments. (Approximately 1/16 inch or more movement.)
(5) Complete lining segment
missing.
ii. Evidence of
oil seepage into or out of the brake lining/drum interface area. This must
include wet contamination of that lining edge accompanied by evidence further
contamination will occur--such as oil running from the drum or bearing seal.
Grease on the lining edge, back of shoe, or drum edge and oil stains with no
evidence of fresh oil leakage are not conditions for out-of-service. This is a
category 2 violation. The penalty for this violation shall be $ 400.00 per
wheel.
iii. Lining with a thickness
less than 3/16 inch for a shoe with a continuous strip of lining or 1/4 inch
for a shoe with two pads for drum brakes or to wear indicator if lining is so
marked, or less than 1/8 inch for air disc brakes, and 1/16 inch or less for
hydraulic disc, drum and electric brakes. This is a category 1 violation. The
penalty for this violation shall be $ 500.00 per wheel.
(c) The following is the
violation, category and penalty pertaining to parking brakes:
1. Any non-manufactured holes or cracks in
the spring brake housing section of a parking brake. This is a category 2
violation. The penalty for this violation shall be $ 100.00.
(d) The following are the
violations, categories and penalties pertaining to brake drums or rotors
(discs):
1. Drums with any external crack or
cracks that open upon brake application. Do not confuse short hairline heat
check cracks with flexural cracks. This is a category 2 violation. The penalty
for this violation shall be $ 300.00 per wheel.
2. Any portion of the drum or rotor (discs)
missing or in danger of falling away. This is a category 2 violation. The
penalty for this violation shall be $ 300.00 per wheel.
3. Rotors with any crack or cracks. Do not
confuse short hairline heat check cracks with fatigue cracks. This is a
category 2 violation. The penalty for this violation shall be $ 300.00 per
wheel.
(e) The following
are the violations, categories and penalties pertaining to brake hose:
1. Hose with any damage extending through the
outer reinforcement ply. (Rubber impregnated fabric cover is not a
reinforcement ply. Thermoplastic nylon may have braid reinforcement or color
difference between cover and inner tube. Exposure of second color is
out-of-service.) This is a category 1 violation. The penalty for this violation
shall be $ 300.00 per hose.
2.
Bulge/swelling when air pressure is applied. This is a category 2 violation.
The penalty for this violation shall be $ 100.00 per hose.
3. Hose with audible leak at other than a
proper connection. This is a category 2 violation. The penalty for this
violation shall be $ 100.00 per hose.
4. Two hoses improperly joined such as a
splice made by sliding the hose ends over a piece of tubing and clamping the
hose to the tube. This is a category 1 violation. The penalty for this
violation shall be $ 5,000 per hose.
5. Air hose cracked, broken or crimped in
such a manner as to restrict air flow. This is a category 2 violation. The
penalty for this violation shall be $ 100.00 per hose.
(f) The following are the violations,
categories and penalties pertaining to brake tubing:
1. Tubing with an audible leak at other than
a proper connection. This is a category 2 violation. The penalty for this
violation shall be $ 100.00.
2.
Tubing cracked, damaged by heat, broken or crimped. This is a category 2
violation. The penalty for this violation shall be $ 100.00.
(g) The following is the
violation, category and penalty pertaining to the low pressure warning device:
1. Low pressure warning device missing,
inoperative, or does not operate at 55 psi and below, or 1/2 of the governor
cutout pressure, whichever is less. If either an audible or visual warning
device is working, vehicle should not be placed out-of-service. This is a
category 2 violation. The penalty for this violation shall be $
100.00.
(h) The
following is the violation, category and penalty pertaining to air loss rate:
1. If an air leak is discovered and the
reservoir pressure is not maintained when the governor is cut-in, the reservoir
pressure is between 80 and 90 psi, the engine is at idle, and the service
brakes are fully applied. This is a category 2 violation. The penalty for this
violation shall be $ 100.00.
(i) The following are the violations,
categories and penalties pertaining to the air reservoir security:
1. Reservoir separated from its original
attachment points by metal fatigue, broken or missing bolt. This is a category
2 violation. The penalty for this violation shall be $ 500.00.
2. Reservoir separated from its original
attachment points and the strap securing is rotted out or is improperly secured
with bailing wire, coat hanger wire or other like material. This is a category
1 violation. The penalty for this violation shall be $ 5,000.
(j) The following are the
violations, categories and penalties pertaining to the air compressor (normally
to be inspected when readily visible or when conditions indicate compressor
problems):
1. Loose compressor mounting
bolts. This is a category 2 violation. The penalty for this violation shall be
$ 100.00.
2. Cracked, broken or
loose pulley. This is a category 2 violation. The penalty for this violation
shall be $ 100.00.
3. Cracked or
broken mounting brackets, braces or adapters. This is a category 2 violation.
The penalty for this violation shall be $ 100.00.
(k) The following are the violations,
categories and penalties pertaining to hydraulic brakes (including power assist
over hydraulic and engine driven hydraulic booster):
1. No pedal reserve with engine running. This
is a category 2 violation. The penalty for this violation shall be $
300.00.
2. Master cylinder less
than 1/4 full. This is a category 2 violation. The penalty for this violation
shall be $ 300.00.
3. Power assist
unit fails to operate. This is a category 2 violation. The penalty for this
violation shall be $ 300.00.
4.
Seeping or swelling brake hose(s) under application of pressure. This is a
category 2 violation. The penalty for this violation shall be $
100.00.
5. Hydraulic hose(s)
abraded (chafed) through outer cover-to-fabric layer. This is a category 2
violation. The penalty for this violation shall be $ 300.00.
6. Fluid lines or connections restricted,
crimped, cracked or broken. This is a category 2 violation. The penalty for
this violation shall be $ 100.00.
7. Any visually observed leaking hydraulic
fluid in the brake system upon full application. This is a category 2
violation. The penalty for this violation shall be $ 100.00.
8. Hydraulic system: brake failure/low fluid
warning light on and/or inoperative. This is a category 2 violation. The
penalty for this violation shall be $ 300.00.
(l) The following are the
violations, categories and penalties pertaining to the vacuum system:
1. Insufficient vacuum reserve to permit one
full brake application after engine is shut off. This is a category 2
violation. The penalty for this violation shall be $ 300.00.
2. Vacuum hose(s) or line(s) restricted,
abraded (chafed) through outer cover-to-cord ply, crimped, cracked, broken, or
has collapse of vacuum hose(s) when vacuum is applied. This is a category 2
violation. The penalty for this violation shall be $ 100.00.