|
|
 |
Effective Date: April 20, 2002
Mandatory Compliance Date: October 20, 2002
Disclaimer
The documents in HTML format that are provided on this Web site have
been prepared for use as a ready reference and do not have legal force
or effect. A Portable Document Format (PDF) version is provided for the
purposes of interpretation and application. The PDF version may be viewed
using version 3.0 or higher of the Adobe® Acrobat Reader, which may
be downloaded free of charge by visiting the Adobe®
Web site.
|
|
Technical Standards Document
Number 122, Revision 1
Motorcycle Brake Systems
(Ce
document est aussi disponible en français.)
As defined by section
12 of the Motor Vehicle Safety Act, a Technical Standards Document
(TSD) is a document that reproduces an enactment of a foreign government
(e.g. a Federal Motor Vehicle Safety Standard issued by the U.S. National
Highway Traffic Safety Administration). According to the Act, the Motor
Vehicle Safety Regulations may alter or override some provisions contained
in a TSD or specify additional requirements; consequently, it is advisable
to read a TSD in conjunction with the Act and its counterpart Regulation.
As a guide, where modifications have been made, the corresponding subsection
number is indicated in the margin of the TSD within parentheses.
TSDs are revised periodically in order to incorporate amendments made
to the reference document, at which time a Notice of Revision is published
in the Canada Gazette Part I. All TSDs are assigned a revision
number, with "Revision 0" designating the original version.
Identification of Changes
In order to facilitate the incorporation of a TSD, certain non-technical
changes may be made to the foreign enactment. These may include the deletion
of words, phrases, figures, or sections that do not apply under the Act
or Regulations, the conversion of imperial to metric units, the deletion
of superseded dates, and minor changes of an editorial nature. Additions
are underlined, and provisions that do not apply are stroked
through. Where an entire section has been deleted, it is replaced
by: "[CONTENT DELETED]". Changes are also made where there is
a reporting requirement or reference in the foreign enactment that does
not apply in Canada. For example, the name and address of the U.S. Department
of Transportation are replaced by those of the Department of Transport.
Effective Dates
The original version of a TSD comes into effect on the date that the
regulation in which it is first incorporated by reference is published
in the Canada Gazette Part II. Subsequent revisions of a TSD come
into effect on the date of publication of the Notice of Revision in the
Canada Gazette Part I. The Effective Date is that of
the publication of the final amendment or the notice of revision in the
Canada Gazette. Compliance with the requirements of a newly issued
TSD is not mandatory until six months following the effective date, during
which time it is permissible to continue to comply with the requirements
of the previous Regulation or TSD. Manufacturers and importers must comply
with the requirements of a newly issued TSD as of the Mandatory Compliance
Date.
Official Version of Technical Standards Documents
Technical Standards Documents may be consulted electronically in both
HTML and Portable Document Format (PDF) on the Department of Transport’s
Web site at www.tc.gc.ca/RoadSafety/mvstm_tsd/index_e.htm.
The PDF version is a replica of the TSD as published by the Department
and is to be used for the purposes of legal interpretation and application.
The HTML version is provided for information purposes only.
(Original signed by)
Director, Standards Research and Development
for the Minister of Transport,
Ottawa, Ontario
Technical Standards Document
Number 122, Revision 1
MOTORCYCLE BRAKE SYSTEMS
The text of this document is based on the U.S. Code of Federal Regulations,
Title 49, Part 571, Federal Motor Vehicle Safety Standard No. 122,
Motorcycle brake systems, revised as of October 1, 1999, and the Final
Rule published in the Federal Register on August 14, 2001, (Vol.
66, No. 157, p. 42613).
S1. Scope
This Technical Standards Document (TSD) standard
specifies requirements for motorcycle brake systems.
S2. Purpose
The purpose of this TSD standard is to insure
safe motorcycle braking performance under normal and emergency conditions.
|
| (1)** |
S3. Application
[CONTENT DELETED] For applicability, see section 122 and Schedule III
to the Motor
Vehicle Safety Regulations.
S4. Definition
* Braking
interval means the distance measured from the start of one
brake application to the start of the next brake application.
(intervalle de freinage)
Initial brake temperature means the temperature of the hottest
service brake of the vehicle 0.32 km 0.2 mile
before any brake application. (température initiale des freins)
Skid number means the frictional resistance of a pavement measured
in accordance with American Society for Testing and Materials (ASTM) Method
E-274-70 (as revised July, 1974) at 64.4 km/h 40 mph,
omitting water delivery as specified in paragraphs 7.1 and 7.2 of that
method. (coefficient de glissance)
* Stopping
distance means the distance traveled by a vehicle from the
start of the brake application to the point where the vehicle stops.
(distance d'arrêt)
*
Split service brake system means a brake system consisting
of two or more subsystems actuated by a single control designed so that
a leakage-type failure of a pressure component in a single subsystem (except
structural failure of a housing that is common to all subsystems) shall
not impair the operation of the other subsystem(s). (système
de frein de service partagé)
S5. Requirements
Each motorcycle shall meet the following requirements under the conditions
specified in S6, when tested according to the procedures and in the sequence
specified in S7. Corresponding test procedures of S7 are indicated in
parentheses. If a motorcycle is incapable of attaining a specified speed,
its service brakes shall be capable of stopping the vehicle from the multiple
of 8.05 km/h 5 mph that is 6.44 km/h 4
mph to 12.88 km/h 8 mph less than the
speed attainable in 1.61 km 1 mile, within stopping
distances that do not exceed the stopping distances specified in Table
1.
|
| |
|
S5.1 Required equipment — split service
brake system.
Each motorcycle shall have either a split service brake system or two
independently actuated service brake systems.
S5.1.1 Mechanical service brake system. Failure of any component
in a mechanical service brake system shall not result in a loss of braking
ability in the other service brake system on the vehicle.
S5.1.2 Hydraulic service brake system. A leakage failure in a
hydraulic service brake system shall not result in a loss of braking ability
in the other service brake system on the vehicle. Each motorcycle equipped
with a hydraulic brake system shall have the equipment specified in S5.1.2.1
and S5.1.2.2.
S5.1.2.1 Master cylinder reservoirs. Each master cylinder shall
have a separate reservoir for each brake circuit, with each reservoir
filler opening having its own cover, seal, and cover retention device.
Each reservoir shall have a minimum capacity equivalent to one and one-half
times the total fluid displacement resulting when all the wheel cylinders
or caliper pistons serviced by the reservoir move from a new lining, fully
retracted position to a fully worn, fully applied position. Where adjustment
is a factor, the worst condition of adjustment shall be used for this
measurement.
|
(2) |
S5.1.2.2 Reservoir labeling. Each motorcycle shall have a brake fluid
warning statement that reads as follows, in letters at least 2.38 mm
three thirty-seconds of an inch high:
Warning: Clean filler cap before removing. Use only ____ fluid from a
sealed container.
(Inserting the recommended type of brake fluid as specified in 49 CFR
571.116, e.g., DOT 3.) The lettering shall be:—
(a) Permanently affixed, engraved, or embossed;
(b) Located so as to be visible by direct view, either on or within
101.6 mm 4 inches of the brake-fluid reservoir
filler plug or cap; and
(c) Of a color that contrasts with its background, if it is not engraved
or embossed.
S5.1.3 Split service brake system. In addition to the equipment
required by S5.1.2 each motorcycle equipped with a split service brake
system shall have a failure indicator lamp as specified in S5.1.3.1.
S5.1.3.1 Failure indicator lamp
(a) One or more electrically operated service brake system
failure indicator lamps that is mounted in front of and in clear view
of the driver, and that is activated —
(1) In the event of pressure failure in any part of the service
brake system, other than a structural failure of either a brake master
cylinder body in a split integral body type master cylinder system
or a service brake system failure indicator body, before or upon application
of not more than 89 N 20 pounds of pedal force upon
the service brake.
(2) Without the application of pedal force, when the level of brake
fluid in a master cylinder reservoir drops to less than the recommended
safe level specified by the manufacturer or to less than one-half
the fluid reservoir capacity, whichever is the greater.
(b) All failure indicator lamps shall be activated when the
ignition switch is turned from the "off" to the "on"
or to the "start" position.
(c) Except for the momentary activation required by S5.1.3.1(b), each
indicator lamp, once activated, shall remain activated as long as the
condition exists, whenever the ignition switch is in the "on"
position. An indicator lamp activated when the ignition is turned to
the "start" position shall be deactivated upon return of the
switch to the "on" position unless a failure exists in the
service brake system.
|
| (3) |
(d) Each indicator lamp shall have a red lens with the legend "Brake
Failure" on or adjacent to it in letters not less than 2.38
mm three thirty-seconds of an inch high that shall
be legible to the driver in daylight when lighted.
S5.1.4 Parking brake. Each three-wheeled motorcycle shall be equipped
with a parking brake of a friction type with a solely mechanical means
to retain engagement.
S5.1.5 Other requirements. The brake system shall be installed
so that the lining thickness of drum brake shoes may be visually inspected,
either directly or by use of a mirror without removing the drums, and
so that disc brake friction lining thickness may be visually inspected
without removing the pads.
S5.2 Service brake system — first (preburnish)
effectiveness
S5.2.1 Service brake system. The service brakes shall be capable
of stopping the motorcycle from 48.3 km/h 30 mph
and 96.6 km/h 60 mph within stopping distances
which do not exceed the stopping distances specified in Column I of Table
I (S7.3.1).
S5.2.2 Partial service brake system. Each independently actuated
service brake system on each motorcycle shall be capable of stopping the
motorcycle from 48.3 km/h 30 mph and 96.6 km/h
60 mph within stopping distances which do not exceed
the stopping distances specified in Column II of Table I (S7.3.2).
S5.3 Service brake system — second effectiveness
The service brakes shall be capable of stopping the motorcycle from 48.3
km/h 30 mph, 96.6 km/h 60 mph,
128.8 km/h 80 mph, and the multiple of 8.05
km/h 5 mph that is 6.44 km/h 4 mph
to 12.88 km/h 8 mph less than the speed attainable
in 1.61 km 1 mile if this speed is 152.95 km/h
95 mph or greater, within stopping distances that do
not exceed the stopping distances specified in Column III of Table I (S7.5).
|
(5) |
S5.4 Service brake system — fade and recovery
These requirements do not apply to a limited-speed motorcycle
motor-driven cycle whose speed attainable in 1.61
km 1 mile is 48.3 km/h 30 mph
or less.
S5.4.1 Baseline check-minimum and maximum pedal forces. The pedal
and lever forces used in establishing the fade baseline check average
shall be within the limits specified in S6.10 (S7.6.1).
S5.4.2 Fade. Each motorcycle shall be capable of making 10 fade
stops from 96.6 km/h 60 mph at not less than 4.57
m/s2 15 ft/s2 for each stop
(S7.6.2).
S5.4.3 Fade recovery. Each motorcycle shall be capable of making
five recovery stops with a pedal force that does not exceed 400 N (90
pounds) and a hand lever force that does not exceed 245 N (55 pounds)
for any of the first four recovery stops and that, for the fifth recovery
stop, is within plus 89 N (20 pounds) and minus 44 N (10 pounds) of the
fade test baseline check average force (S7.6.3), but not less than 0 N
(0 pounds).
|
(5) |
S5.5 Service brake system — final effectiveness
These requirements do not apply to a limited-speed motorcycle
motor-driven cycle whose speed attainable in 1.61 km 1
mile is 48.3 km/h 30 mph or less.
S5.5.1 Service brake system. The service brakes shall be capable
of stopping the motorcycle in a manner that complies with S5.3 (S7.8.1).
S5.5.2 Hydraulic service brake system-partial failure. In the
event of a pressure component leakage failure, other than a structural
failure of either a brake master cylinder body in a split integral body
type master cylinder system or a service brake system failure indicator
body, the remaining portion of the service brake system shall continue
to operate and shall be capable of stopping the motorcycle from 48.3
km/h 30 mph and 96.6 km/h 60 mph
within stopping distances that do not exceed the stopping distances specified
in Column IV of Table I (S7.8.2).
S5.6 Parking brake system
The parking brake system shall be capable of holding the motorcycle stationary
(to the limits of traction of the braked wheels), for 5 minutes, in both
forward and reverse directions, on a 30 percent grade, with an applied
force of not more than 400 N 90 pounds for a foot-operated
system and 245 N 55 pounds for a hand-operated system (S7.9).
S5.7 Service brake system-water recovery
S5.7.1 Baseline check. The pedal and lever forces used in establishing
the water recovery baseline check average shall be within the limits specified
in S6.10 (S7.10.1).
S5.7.2 Water recovery test. Each motorcycle shall be capable of
making five recovery stops with a pedal force that does not exceed 400
N (90 pounds) and a hand lever force that does not exceed 245 N (55 pounds)
for any of the first four recovery stops and that, for the fifth recovery
stop, is within plus 89 N (20 pounds) and minus 44 N (10 pounds) of the
water recovery baseline check average force (S7.10.2), but not less than
0 N (0 pounds).
S5.8 Service brake system design durability
Each motorcycle shall be capable of completing all braking requirements
of S5 without detachment of brake linings from the shoes or pad, detachment
or fracture of any brake system components, or leakage of fluid or lubricant
at the wheel cylinder, and master cylinder reservoir cover, seal, or retention
device (S7.11).
|
|
S6. Test conditions
The requirements of S5 shall be met under the following conditions. Where
a range of conditions is specified, the motorcycle shall be capable of
meeting the requirements at all points within the range.
|
(4) |
S6.1 Vehicle mass weight
Motorcycle mass weight is unloaded vehicle mass
weight plus 90.72 kg 200 pounds
(including driver and instrumentation), with the added mass weight
distributed in the saddle or carrier if so equipped.
S6.2 Tire inflation pressure
Tire inflation pressure is the pressure recommended by the manufacturer
for the vehicle mass weight specified in paragraph
S6.1.
S6.3 Transmission
Unless otherwise specified, all stops are made with the clutch disengaged.
S6.4 Engine
Engine idle speed and ignition timing settings are according to the manufacturer's
recommendations. If the vehicle is equipped with an adjustable engine
speed governor, it is adjusted according to the manufacturer's recommendation.
S6.5 Ambient temperature
The ambient temperature is between 0° C 32° F
and 37.8° C 100° F.
|
(6) |
S6.6 Wind velocity
The wind velocity is zero.
S6.7 Road surface
Road tests are conducted on level roadway having a skid number of 81.
The roadway is 2.44 m 8 feet wide for two-wheeled
motorcycles, and overall vehicle width plus 1.52 m 5 feet
for three-wheeled motorcycles. The parking brake test surface is clean,
dry, smooth portland cement concrete.
S6.8 Vehicle position
The motorcycle is aligned in the center of the roadway at the start of
each brake application. Stops are made without any part of the motorcycle
leaving the roadway and without lockup of any wheel.
S6.9 Thermocouples
The brake temperature is measured by plug-type thermocouples installed
in the approximate center of the facing length and width of the most heavily
loaded shoe or disc pad, one per brake, as shown in Figure 1.
S6.10 Brake actuation forces
Except for the requirements of the fifth recovery stop in S5.4.3 and
S5.7.2 (S7.6.3 and S7.10.2), the hand lever force is not less than 10
N (2.3 pounds) and not more than 245 N (55 pounds) and the foot pedal
force is not less than 25 N (5.6 pounds) and not more than 400 N (90 pounds).
The point of initial application of the lever forces is 30 mm 1.2
inches from the end of the brake lever grip. The direction of the
force is perpendicular to the handle grip on the plane along which the
brake lever rotates, and the point of application of the pedal force is
the center of the foot contact pad of the brake pedal. The direction of
the force is perpendicular to the foot contact pad on the plane along
which the brake pedal rotates, as shown in Figure
2.
|
|
S7. Test procedures and sequence
Each motorcycle shall be capable of meeting all the requirements of this
TSD standard when tested according to the procedures
and in the sequence set forth below without replacing any brake system
part, or making any adjustments to the brake system other than as permitted
in S7.4. A motorcycle shall be deemed to comply with S5.2, S5.3 and S5.5
if at least one of the stops specified in S7.3, S7.5 and S7.8 is made
within the stopping distances specified in Table I.
S7.1 Braking warming
If the initial brake temperature for the first stop in a test procedure
(other than S7.10) has not been reached, heat the brakes to the initial
brake temperature by making up to 10 stops from 48.3 km/h 30
mph at a deceleration of not more than 3.05 m/s2
10 ft/s2. On independently operated brake
systems, the coldest brake shall be within 5.56° C 10°
F of the hottest brake.
S7.2 Pretest instrumentation check
Conduct a general check of test instrumentation by making not more than
10 stops from a speed of not more than 48.3 km/h 30 mph
at a deceleration of not more than 3.05 m/s2 10
ft/s2. If test instrument repair, replacement, or
adjustment is necessary, make not more than 10 additional stops after
such repair, replacement or adjustment.
S7.3 Service brake system — first (preburnished)
effectiveness test
S7.3.1 Service brake system. Make six stops from 48.3 km/h
30 mph and then six stops from 96.6 km/h 60
mph with an initial brake temperature between 54.4° C
130° F and 65.6° C 150° F.
S7.3.2 Partial service brake system. For a motorcycle with two
independently actuated service brake systems, repeat S7.3.1 using each
service brake system individually.
S7.4 Service brake system — burnish procedure
Burnish the brakes by making 200 stops from 48.3 km/h 30
mph at 3.66 m/s2 12 ft/s2.
The braking interval shall be either the distance necessary to reduce
the initial brake temperature to between 54.4° C 130° F
and 65.6° C 150° F or 1.61 km 1
mile, whichever occurs first. Accelerate at maximum rate to 48.3
km/h 30 mph immediately after each stop and maintain
that speed until making the next stop. After burnishing adjust the brakes
in accordance with the manufacturer's recommendation.
S7.5 Service brake system — second effectiveness
test
Repeat S7.3.1. Then, make four stops from 128.8 km/h 80
mph and four stops from the multiple of 8.05 km/h 5
mph that is 6.44 km/h 4 mph to 12.88
km/h 8 mph less than the speed attainable in 1.61
km 1 mile if that speed is 152.95 km/h 95
mph or greater.
|
| (5) |
S7.6 Service brake system — fade and recovery
test
These requirements do not apply to a limited-speed motorcycle
motor-driven cycle whose speed attainable in 1.61 km 1
mile is 48.3 km/h 30 mph or less.
S7.6.1 Baseline check stops. Make three stops from 48.3 km/h
30 mph at 3.05 to 3.35 m/s2 10
to 11 ft/s2 for each stop. Compute the average of
the maximum brake pedal forces and the maximum brake lever forces required
for the three stops.
|
(7)
|
S7.6.2 Fade stops. Make 10
stops from 96.6 km/h 60 mph at not less than 4.57
m/s2 15 ft/s2 for each stop.
The initial brake temperature before the first brake application shall be
between 54.4° C 130° F and 65.6° C 150°
F. Initial brake temperatures before brake applications for subsequent
stops shall be those occurring at the distance intervals. Attain the required
deceleration as quickly as possible and maintain at least this rate for
not less than three-fourths of the total stopping distance for each stop.
The interval between the starts of service brake applications shall be 0.64
km 0.4 mile. Drive 1.61 km 1 mile
at 48.3 km/h 30 mph after the last fade stop and
immediately conduct the recovery test specified in S7.6.3.
S7.6.3 Recovery test. Make five stops from 48.3 km/h 30
mph at 3.05 to 3.35 m/s2 10 to 11 ft/s2
for each stop. The braking interval shall not be more than 1.61 km
1 mile. Immediately after each stop accelerate at maximum
rate to 48.3 km/h 30 mph and maintain that speed
until making the next stop.
|
| (5) |
S7.7 Service brake system — reburnish
Repeat S7.4 except make 35 burnish stops instead of 200 stops. Brakes
may be adjusted after reburnish if no tools are used. These requirements
do not apply to a limited-speed motorcycle motor-driven
cycle whose speed attainable in 1.61 km 1 mile is 48.3
km/h 30 mph or less.
|
| (5) |
S7.8 Service brake system — final effectiveness
test
These requirements do not apply to a limited-speed motorcycle
motor-driven cycle whose speed attainable in 1.61 km 1
mile is 48.3 km/h 30 mph or less.
S7.8.1 Service brake system. Repeat S7.5 including S7.3.1.
S7.8.2 Partial service brake system test. Alter the service brake
system on three-wheeled motorcycles to induce a complete loss of braking
in any one subsystem. Determine the line pressure or pedal force necessary
to cause the brake system failure indicator to operate. Make six stops
from 48.3 km/h 30 mph and then six stops from
96.6 km/h 60 mph with an initial brake temperature
between 54.4° C 130° F and 65.6° C 150°
F. Repeat for each subsystem. Determine that the brake failure
indicator is operating when the master cylinder fluid level is less than
the level specified in S5.1.3.1(a)(2), and that it complies with S5.1.3.1(c).
Check for proper operation with each reservoir in turn at a low level.
Restore the service brake system to normal at completion of this test.
S7.9 Parking brake test
Starting with an initial brake temperature of not more than 65.6°
C 150° F, drive the motorcycle downhill on the 30
percent grade with the longitudinal axis of the motorcycle in the direction
of the grade. Apply the service brakes with a force not exceeding 400.34
N 90 pounds to stop the motorcycle and place the
transmission in neutral. Apply the parking brake by exerting a force not
exceeding those specified in S5.6. Release the service brake and allow
the motorcycle to remain at rest (to the limit of traction of the braked
wheels) for 5 minutes. Repeat the test with the motorcycle parked in the
reversed (uphill) position on the grade.
S7.10 Service brake system-water recovery test
S7.10.1 Baseline check stops. Make three stops from 48.3 km/h
30 mph at 3.05 to 3.35 m/s2 10
to 11 ft/s2 for each stop. Compute the average of
the maximum brake pedal forces and of the maximum brake lever forces required
for the three stops.
S7.10.2 Wet brake recovery stops. Completely immerse the rear
brake assembly of the motorcycle in water for 2 minutes with the brake
fully released. Next completely immerse the front brake assembly of the
motorcycle in water for 2 minutes with the brake fully released. Perform
the entire wetting procedure in not more than 7 minutes. Immediately after
removal of the front brake from water, accelerate at a maximum rate to
48.3 km/h 30 mph without a brake application.
Immediately upon reaching that speed make five stops, each from 48.3
km/h 30 mph at 3.05 to 3.35 m/s2
10 to 11 ft/s2 for each stop. After each stop
(except the last) accelerate the motorcycle immediately at a maximum rate
to 48.3 km/h 30 mph and begin the next stop.
S7.11 Final inspection
Upon completion of all the tests inspect the brake system in an assembled
condition, for compliance with the brake lining inspection requirements.
Disassemble all brakes and inspect:
(a) The entire brake system for detachment or fracture of any component.
(b) Brake linings for detachment from the shoe or pad.
(c) Wheel cylinder, master cylinder, and axle seals for fluid or lubricant
leakage.
(d) Master cylinder for reservoir capacity and retention device.
(e) Master cylinder label for compliance with S5.1.2.2.
|
|
| |
Stopping
distance—Effectiveness tests
|
|
Vehicle
Test Speed
|
Preburnish
effectiveness total system (S5.2.1)—I |
Preburnish
effectiveness partial mechanical systems (S5.2.2)—II |
Effectiveness
total system (S5.3) (S7.5)—III |
Effectiveness
partial hydraulic systems (S5.5.2)—IV |
|
km/h
|
mph
|
m.
|
ft.
|
m.
|
ft.
|
m.
|
ft.
|
m.
|
ft.
|
|
24.15
|
15
|
3.96
|
13
|
9.15
|
30
|
3.35
|
11
|
7.62
|
25
|
|
32.20
|
20
|
7.32
|
24
|
16.46
|
54
|
5.79
|
19
|
13.41
|
44
|
|
40.25
|
25
|
11.28
|
37
|
25.61
|
84
|
9.15
|
30
|
20.73
|
68
|
|
48.3
|
30
|
16.46
|
54
|
36.89
|
121
|
13.11
|
43
|
29.57
|
97
|
|
56.35
|
35
|
22.56
|
74
|
50.30
|
165
|
17.68
|
58
|
40.23
|
132
|
|
64.40
|
40
|
29.27
|
96
|
65.85
|
216
|
22.87
|
75
|
52.73
|
173
|
|
72.45
|
45
|
36.88
|
121
|
83.23
|
273
|
28.96
|
95
|
66.45
|
218
|
|
80.50
|
50
|
45.73
|
150
|
102.74
|
337
|
39.02
|
128
|
80.47
|
264
|
|
88.55
|
55
|
55.18
|
181
|
124.09
|
407
|
47.26
|
155
|
99.36
|
326
|
|
96.60
|
60
|
65.85
|
216
|
147.56
|
484
|
56.40
|
185
|
118.26
|
388
|
|
104.65
|
165
|
|
|
|
|
66.16
|
217
|
138.68
|
455
|
|
112.70
|
170
|
|
|
|
|
80.49
|
264
|
160.63
|
527
|
|
120.75
|
175
|
|
|
|
|
92.38
|
303
|
184.71
|
606
|
|
128.80
|
180
|
|
|
|
|
105.18
|
345
|
210.01
|
689
|
|
136.85
|
185
|
|
|
|
|
118.60
|
389
|
237.13
|
778
|
|
144.90
|
190
|
|
|
|
|
147.56
|
484
|
265.79
|
872
|
|
152.95
|
195
|
|
|
|
|
164.63
|
540
|
295.96
|
971
|
|
161.00
|
100
|
|
|
|
|
182.32
|
598
|
327.96
|
1076
|
|
169.05
|
105
|
|
|
|
|
200.91
|
659
|
362.10
|
1188
|
|
177.10
|
110
|
|
|
|
|
220.43
|
723
|
396.85
|
1302
|
|
185.15
|
115
|
|
|
|
|
241.16
|
791
|
433.73
|
1423
|
|
193.20
|
120
|
|
|
|
|
262.50
|
861
|
472.14
|
1549
|
|
Sequence
|
Test procedure
|
Requirements
|
|
1. Instrumentation check
|
S7.2
|
|
|
2. First (Preburnish) effectiveness test
|
|
|
|
(a) Service brake system
|
S7.3.1
|
S5.2.1
|
|
(b) Partial service brake system
|
S7.3.2
|
S5.2.2
|
|
3. Burnish procedure
|
S7.4
|
|
|
4. Second effectiveness test
|
S7.5
|
S5.3
|
|
5. First fade and recovery test
|
S7.6
|
S5.4
|
|
6. Reburnish
|
S7.7
|
|
|
7. Final effectiveness test
|
|
|
|
(a) Service brake system
|
S7.8.1
|
S5.5.1
|
|
(b) Partial service brake system
|
S7.8.2
|
S5.5.2
|
|
8. Parking brake test (three-wheeled motorcycles
only)
|
S7.9
|
S5.6
|
|
9. Water recovery test
|
S7.10
|
S5.7
|
|
10. Design durability
|
S7.11
|
S5.8
|
|
Figure 1 — Typical Plug-Type Thermocouple Installations
Figure 2 — Direction of Force
ENDNOTES:
* Please see subsection 2(1)
of the Motor Vehicle Safety Regulations for the applicable definition.
** The numbers in parentheses in the margin refer to subsections
of section
122 of the Regulations that supersede the requirements of the TSD provision.
|
