1991 MAZDA MIATA torque

Remove brake caliper and wheel hub. On rear axle, carefully remove sensor rotor from axle using chisel. On
front rotor, remove sensor rotor using Puller (49-0839-425C). To install, press sensor rotors onto axle and front
rotor using Installer (49-H026-101A). On front rotor, install sensor rotor with chamfered edge toward hub. To
complete installation, reverse removal procedure. Tighten mounting bolts to specification. See TORQUE
SPECIFICATIONS TABLE at end of article.
WHEEL SPEED SENSOR
Removal & Installation
Unplug wheel sensor connector. Remove sensor bolt. Remove wheel sensor from vehicle. To install, reverse
removal procedure. On RX7, adjust wheel sensor so clearance between sensor and rotor is .016-.039" (.40-1.0
mm). Tighten mounting bolts to specification. See TORQUE SPECIFICATIONS TABLE at end of article.
DIAGNOSING ABS SYSTEM
ABS TESTER OPERATION
Fig. 13: Operating ABS Tester

Courtesy of MAZDA MOTORS CORP.
TESTING SEQUENCE

1991 Mazda MX-5 Miata
ANTI-LOCK BRAKE SYSTEM 1988-91 BRAKES Mazda Anti-Lock Brake System
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Courtesy of MAZDA MOTORS CORP.
ADJUSTMENTS
PEDAL FREE PLAY
Depress pedal several times to release vacuum. Pedal free play should be .16-.28" (4-7 mm).
PEDAL HEIGHT & STOPLIGHT SWITCH
1. Released pedal height is measured from carpet surface on vertical portion of firewall to pedal pad center.
Disconnect stoplight switch. Move switch away from pedal. Adjust brake pedal push rod until correct
released pedal height is obtained. See BRAKE PEDAL HEIGHT SPECIFICATIONS TABLE.
2. Adjust pedal free play. See PEDAL FREE PLAY under ADJUSTMENTS. Tighten push rod lock nut.
Rotate stoplight switch until it contacts pedal, then rotate an additional 1/2 turn. Tighten stoplight switch
lock nut. Reconnect stoplight switch.
3. The applied pedal height is measured from angled portion of firewall (without carpet) to pedal pad center.
Start engine. Depress brake pedal with 132-lb. (60 kg) pressure.
4. Measure the applied pedal height. If distance is not as specified, check brake adjustment, or check for air
in system. See BRAKE PEDAL HEIGHT SPECIFICATIONS TABLE.
BRAKE PEDAL HEIGHT SPECIFICATIONS
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS
Application(1) In. (mm)
Pedal Released
Miata & 9296.7-7.1 (171-181)
RX77.2-7.4 (184-189)
Pedal Applied
Miata & 9293.7 (95)
RX73.9 (100)
(1)Minimum height.
ApplicationFt. Lbs. (N.m)
Brake Caliper Mounting Bolts
Miata36-51 (49-69)
RX7
Front58-72 (79-98)
Rear33-40 (45-54)
929
Front61-69 (83-94)

1991 Mazda MX-5 Miata
ANTI-LOCK BRAKE SYSTEM 1988-91 BRAKES Mazda Anti-Lock Brake System
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Fig. 3: Removing Axle Shaft From Hub Assembly
Courtesy of MAZDA MOTORS CORP.
2. Remove upper control arm bolt, and pull knuckle/hub assembly outward. Remove inner CV joint from
differential flange. Remove axle shaft from knuckle/hub assembly. If axle shaft is stuck in knuckle/hub
assembly, use plastic or soft-faced hammer to tap axle shaft from knuckle/hub assembly. See Fig. 3
.
Remove axle shaft lock nut.
Installation
To install, reverse removal procedure. Align marks on differential and axle shaft flanges. Check rear wheel
alignment. See appropriate article in WHEEL ALIGNMENT. Tighten all bolts and nuts to specification. See
TORQUE SPECIFICATIONS
. Stake axle shaft lock nut. See Fig. 4.
NOTE: Manufacturer recommends using new axle shaft lock nut during installation.

1991 Mazda MX-5 Miata
1990-93 DRIVE AXLES Axle Shafts - MX-5 Miata
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Fig. 16: Installing Boot Band
Courtesy of MAZDA MOTORS CORP.
AXLE SHAFT LENGTH
REAR AXLE SHAFT BOOT IDENTIFICATION
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS
ApplicationIn. (mm)
1990
On Vehicle25.96 (659.3)
Off Vehicle25.97-26.37 (695.7-669.7)
1991-93
On Vehicle25.87 (657)
Off Vehicle25.30-26.68 (642.6-677.7)
ApplicationIn. (mm)
Wheel Side Diameter3.58 (90.8)
Differential Side Diameter3.44 (87.4)

1991 Mazda MX-5 Miata
1990-93 DRIVE AXLES Axle Shafts - MX-5 Miata
Microsoft
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Fig. 26: Typical Master Cylinder (Except Navajo & 929)
Courtesy of MAZDA MOTORS CORP.
SPECIFICATIONS
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS
ApplicationFt. Lbs. (N.m)
Backing Plate (Rear)
B2200 & B2600i 2WD72-87 (98-118)
B2600i 4WD65-80 (88-108)
Navajo25-35 (34-47)
All Others33-43 (45-58)
Caliper Guide Bolt
B2200 & B2600i23-30 (31-41)

1991 Mazda MX-5 Miata
BRAKE SYSTEM 1991 BRAKES Mazda Brake System
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Removal (Front - B2600i & MPV 4WD)
1. Raise and support vehicle. Remove engine skid plate. Drain differential. On MPV 4WD, remove tie rod
end and lower arm. Remove front axle shafts. See AXLE SHAFTS
- FRONT article. Mark drive shaft
position, and remove drive shaft.
2. On B2600i, remove differential subframe mounting bolts and nuts. Remove differential, Remote Free
Wheel (RFW) and subframe assembly from vehicle. Remove RFW assembly from right side of
differential housing. Pull drive coupler from carrier. Remove differential carrier retaining bolts. Remove
differential carrier.
3. On MPV 4WD, remove differential housing mounting bolts and mount at end of Remote Free Wheel
(RFW) extension housing. Remove differential and extension housing from vehicle. Remove RFW
assembly from right side of differential housing. Pull drive coupler from carrier. Remove differential
carrier retaining bolts. Remove differential carrier.
Installation
To install, reverse removal procedure. See Fig. 2 or Fig. 3 . Apply Sealant (8527 77 739 ) to carrier mating
flange. Align marks made during removal. Refill differential with lubricant. Tighten all fasteners to
specification. See TORQUE SPECIFICATIONS
.

1991 Mazda MX-5 Miata
1990-91 DRIVE AXLES Differentials & Drive Axles - 929, B2200, B2600i, MX-5 Miata, MPV, Protege & RX-7
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B2600i and MPV, remove brake drum and drive axles. See REAR AXLE SHAFTS & BEARINGS. On
Protege 4WD, RX7 and 929, disconnect CV joint drive axles from differential assembly and wire aside.
2. On all models, mark flanges and disconnect drive shaft. Remove ABS sensor (if equipped). On RX7,
remove rear exhaust system and differential mount on left side of pinion flange. Remove hanger mounts
and allow left side to hang down. Disconnect sublinks and remove differential.
3. On Protege 4WD and 929 models, remove differential housing assembly-to-chassis mounting bolts.
Remove differential housing assembly from vehicle. On all models, remove differential carrier-to-
housing nuts. Remove differential carrier.
Installation
To install, reverse removal procedure. Apply Sealant (8527 77 739 ) to carrier mating flange. Align marks made
during removal. Refill differential with correct type and amount of lubricant. Tighten all fasteners to
specification. See TORQUE SPECIFICATIONS
.
Fig. 4: Exploded View of Differential Assembly (RX7)

Courtesy of MAZDA MOTORS CORP.
Removal (Miata)
1. Raise and support vehicle. Drain differential. Mark flanges and remove drive shaft. Note locations and
disconnect wiring harness from Power Plant Frame (PPF). See Fig. 5
.

1991 Mazda MX-5 Miata
1990-91 DRIVE AXLES Differentials & Drive Axles - 929, B2200, B2600i, MX-5 Miata, MPV, Protege & RX-7
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Sunday, July 05, 2009 2:17:01 PMPage 8 © 2005 Mitchell Repair Information Company, LLC.

2. Support transmission with a jack. Remove PPF bracket from rear transmission extension housing.
Remove PPF-to-differential side bolts and pry out spacer. Remove PPF/differential mounting spacer. See
Fig. 6
. Install metric bolt (M14 X 1.5) into sleeve. See Fig. 7 .
3. Twist bolt side-to-side while pulling bolt downward. Install a metric bolt (M6 X 1) into hole in housing
block to hold sleeve and remove long bolt (M14 X 1.5). Remove short bolt (M6 X 1).
4. Remove PPF-to-transmission side bolts and remove PPF. Mark and disconnect CV joint drive axles from
differential assembly and wire aside. Remove differential carrier-to-housing nuts. Remove differential
carrier.
INSTALLATION
1. To install, reverse removal procedure. Apply Sealant (8527 77 739 ) to carrier mating flange. Align marks
made during removal and install differential carrier. Install differential. Raise transmission until engine
and transmission are level.
2. To install Power Plant Frame (PPF), position PPF in place. Install PPF/differential mounting spacer and
tighten bolts to 27-38 ft. lbs. (37-52 N.m). Install PPF-to-transmission side mounting bolts and tighten.
3. Ensure sleeve is installed into PPF housing block. Install spacer and bolts. Ensure reamer bolt is installed
into front hole and tighten. See Fig. 6
.
4. Install transmission-to-PPF bracket. Install remaining PPF bolts and tighten all bolts to specification. See
TORQUE SPECIFICATIONS
. To complete installation, reverse removal procedure.
NOTE: On Miata, front PPF-to-differential side mounting bolt is reamer bolt, which
aligns power plant frame. See Fig. 6
.

1991 Mazda MX-5 Miata
1990-91 DRIVE AXLES Differentials & Drive Axles - 929, B2200, B2600i, MX-5 Miata, MPV, Protege & RX-7
Microsoft
Sunday, July 05, 2009 2:17:01 PMPage 9 © 2005 Mitchell Repair Information Company, LLC.