![header thumbnail](/images/publishers\bsi_cover.gif)
DD ISO/PAS 22574:2007
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
![header thumbnail](/images/publishers\bsi_cover.gif)
Road vehicles. Brake linings friction materials. Visual inspection
Hardcopy , PDF
25-08-2023
English
28-02-2007
Foreword
Introduction
1 Scope
2 Characteristic features for friction materials
2.1 Characteristic features for disc brake pads
2.1.1 Gapping (between material and plate)
2.1.2 Edge chipping
2.1.3 Splits
2.1.4 Minor splits
2.1.5 Plucked and indented spigots
2.1.6 Poor consolidated spigot holes
2.1.7 Excess adhesive on plate
2.1.8 Material flash on plate
2.1.9 Abrasive coating
2.1.10 Anti-noise coating runs
2.1.11 Skin crazing
2.1.12 Underlayer distribution
2.1.13 Marking
2.1.14 Unground material surface
2.1.15 Paint on friction material surface
2.1.16 Surface blisters
2.1.17 Surface indentations
2.1.18 Grinding marks on friction material surface
2.1.19 Higher porosity area
2.1.20 Poorly consolidated friction material
2.1.21 Surface contamination with foreign matter
2.1.22 Surface contamination with similar friction
material
2.1.23 Friction surface structure
2.2 Characteristic features for drum brake linings
2.2.1 Chipped edges/corners
2.2.2 Edge splits
2.2.3 Drill hole chipping at lining ends
2.2.4 Drill hole burrs inside the surface
2.2.5 Drill hole burrs outside the surface
2.2.6 Cracks radiating from the rivet hole
2.2.7 Paint on surface - Lining for riveting and
bonding
2.2.8 Surface cracks
2.2.9 Marking
2.2.10 Moulding skin on inside radius
surface - Linings for bonding and riveting
2.2.11 Moulding skin on outside radius
surface - linings for riveting or bonding
2.2.12 Surface blisters
2.2.13 Surface grind marks
2.2.14 Pitted surface (plucked surface)
2.2.15 Surface structure
2.2.16 Poor consolidation
2.2.17 Inside surface indentations
2.2.18 Outside surface indentations
2.2.19 Concentration of self contained ingredients
unless typical of the formulation
2.2.20 High porosity area
2.2.21 Metal wire or plastic reinforcement
2.2.22 Foreign matter friction surface inclusion
2.3 Characteristics features for bonded lined shoes
2.3.1 Lining overhang on shoe platform edge
2.3.2 Faulty shoes
2.3.3 Restricted lever movement
2.3.4 Stencilled information
2.3.5 Excess adhesive exudation over shoe platform
edges
2.3.6 Excess adhesive exudation from lining ends
2.3.7 Excess primer
2.3.8 Lining surface condition
2.3.9 Gaps between linings and shoe platform
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.