
a l
_ ■
M a zd a M otor of A m erica, Inc.
Service Bulletin
D
,^
m a a j a
Irvine, California 9 2 7 1 8
T e le p h o n e (7 1 4 ) 7 2 7 -1 9 9 0
Category
P
Applicable Model/s
All Models
Subject
B R A K E J U D D E R R E P A IR
Bulletin No.
006/94
Issued
9/1/94
Revised
DESCRIPTION
Custom ers who complain of vibration or pulsation in the steering w heel, brake pedal, floor or seat while applying
the brakes may be experiencing sym ptom s of brake judder. Ju d d e r is caused by:
• Disk Thickness Variation (D T V )
• rotor run-out and/or
• rotor surface rust (which leads to D T V )
This bulletin describes the causes and corrections for each condition.
CAUSES OF JUDDER
1. Disc Thickness Variation (D T V ) - D T V creates a vibration/pulsation during application of the brakes. D T V
will increase with m ileage accumulation if the run-out of th e disc is excessive.
2. Disc Rotor Run-Out - Run-out, or rotor “w o b b le”, leads to D T V . It is corrected by precision m achining to
bring the run-out within specification.
3. Rotor Surface Rust - U nder certain conditions (storage or use in extrem e environm ents), the surface of the
brake rotors may becom e rusted in the pad non-contact a re a . If this corrosion penetrates the rotor surface
deeply enough, it will not w ear or rub off during normal use. This will cause D T V .
CORRECTION
In order to effectively correct brake judder, rotor surfaces must be precisely m achined. M a z d a M otor of A m erica
has evaluated both on and off-car brake lathes and has d eterm in ed that on-car lathes are m ore precise and
greatly reduce comeback repairs.
T h e steps necessary for correction of brake judder are as follows:
1. If the vehicle is in d ealer inventory and the condition is rotor rust:
a. C lean the rotor surface by driving the vehicle several miles while frequently applying the brakes.
b. If vibration/pulsation is still felt, proceed to step “c".
c. M achine the rotor surface enough to rem ove all rust or surface staining (generally 0 .1 m m per side).
NOTE:
If machining is perform ed, the S ervice M a n a g e r’s signature
must appear on the repair order.
2. If the vehicle has been in service:
a. Verify customer’s complaint with a test drive.
b. If brake judder is felt, proceed to step c. If brake ju d d e r is not felt, refer to th e w orkshop m anual or the
N V H manual for additional troubleshooting inform ation.
c. M a rk the
front
w heel(s) and th e lug nut stud with chalk. This will d eterm ine the original position of the
w heel to the rotor. R em ove
the front
w h eel(s).
NOTE:
A high majority of brake ju d d er is due to D T V o f the
front rotors.
C u s to m e r complaints of brake
judder are most often corrected
by machining the front rotors only.
d. M easu re the remaining front rotor thickness and run-out. D eterm in e if sufficient rotor m aterial rem ains to
allow machining.
Limit: Stated minimum thickness for the model plus 0.8mm.
e. If machining can be achieved, an on-car brake lathe is recom m ended and
will be required for all w ar
ranty repairs after January 1 .1 9 9 5
to ensure a precise rotor surface.
Index *
040049
Continued On Next Page
IMPORTANT:
S ervice and P arts M a n a g e rs sh o u ld read th is b u lle tin c a re fu lly , sign a n d c o n v e y all in fo rm a tio n to th o se c o n ce rn e d .
Signature
P age 1 of 2
Service Manager
Signature
Parts Manager
Содержание 626 1989
Страница 90: ...4B OUTLINE COMPONENT LOCATION Input and Output Devices Solenoid valve VIC 76G04C 004 ...
Страница 92: ...4B OUTLINE Exhaust System ...
Страница 93: ...76G04C 007 ...
Страница 103: ... TROUBLESHOOTING WITH SST 4 B 76F04B 011 76F04B 012 Code No 08 Air flow sensor PC Possible Cause Next page 4B 17 ...
Страница 107: ... TROUBLESHOOTING WITH SST 4 B No 41 Code Solenoid valve Variable inertia control VIC PC Possible Cause 76G04C 034 ...
Страница 110: ...4 B SWITCH MONITOR FUNCTION Idle switch 76F04B 020 Blower switch 76F04 B 021 Headlight switch Rear defroster switch ...
Страница 188: ...C 49N0 17 201 Setting Plate 49N0 17 2Q2 Handle V 49N0 17 203 Stopper PAGE 2 OF 3 ...
Страница 648: ...Table IV Substantially Identical Kecovei onlv Equipment None approved as of this date ...
Страница 677: ...Number 001 94 Date Issued 2 28 94 Revised 323 PROTEGE Page 2 of 8 ...
Страница 678: ...Number 001 94 Date Issued 2 28 94 Revised MX 3 J Page 3 of 8 ...
Страница 679: ...Num ber 001 94 Date Issued 2 28 94 Revised RX 7 P age 4 of 8 ...
Страница 680: ...Number 001 94 Date Issued 2 28 94 Revised ...
Страница 681: ...Page 6 of 8 tt V ...
Страница 682: ...Number 001 94 Date Issued 2 28 94 Revised MIATA P age 7of 8 ...
Страница 683: ...Num ber 001 94 Date Issued 2 28 94 Revised NAVAJO 94 B TRUCK P age 8 of 8 ...
Страница 685: ...Number 001 94 Date Issued 2 28 94 Revised 4 28 94 Page 7of 8 ...
Страница 695: ...Page 2 of 10 ...
Страница 696: ...Page 3 of 10 ...
Страница 697: ...Number 005 97 Date Issued 03 10 97 Revised 1989 94323 PROTEGE Page 4 of 10 ...
Страница 698: ...1995 RX 7 Page 5 of 10 ...
Страница 699: ...Page 6 of 10 ...
Страница 700: ...Number 005 97 Date Issued 03 10 97 Revised Page 7 of 10 ...
Страница 701: ...Number 005 97 Date Issued 03 10 97 Revised Page 8 of 10 ...
Страница 702: ...Number 005 97 Date Issued 03 10 97 Revised 1990 93 B Series 1994 97 B Series Top F Bottom D Page 9 of 10 ...
Страница 703: ...Number 005 97 Date Issued 03 10 97 Revised Page 10 of 10 ...
Страница 711: ...Protege 1989 94 Protege 1995 MX 3 1992 96 RX 7 1993 96 ...
Страница 712: ......
Страница 713: ......
Страница 714: ...Millenia 1995 High Side J Low Side K ...
Страница 720: ...Figure 8 MX 6 626 A C System Figure 9 B Series A C System Pace 3 of 4 ...
Страница 721: ...Figure 12 323 Protege AtC System Page 4 of 4 ...
Страница 726: ...1 ASSEMBLY TIMING BELT TIMING BELT To que Specifications i 1 25 1 75 m kg 109 152 in tbl 1 7 2 69G D 1B160 ...
Страница 736: ...MEMO if A R FRONT SUSPENSION DOUBLE WISHBONE R 22 3 1989 B2200 B2600i Revised 5 91 New page ...
Страница 740: ...B ______________ ASSEMBLY TIMING BELT TIMING BELT 69G 01B160 B 66 ...
Страница 748: ...R FRONT SUSPENSION DOUBLE WISHBONE MEMO i 4 R 22 3 1990 02200 B2600I Revised 5 91 New page ...
Страница 762: ...R FRONT SUSPENSION DOUBLE WISHBONE MEMO 4 R 22 3 1991 B2200 B2600i Revised 5 91 New page ...
Страница 768: ... 1989 626 MX 6 50 96 Revised B 91 ...