1991 MAZDA MIATA dimensions

.0043" (.09-.11 mm). Minimum backlash at any point is .002" (.05 mm). Difference between minimum
and maximum backlash at 4 measuring points should not exceed .0028" (.07 mm).
4. To set differential bearing preload, tighten adjustment screws equally until distance between measuring
points on carrier bearing caps is within specification. See Fig. 12
and DIFFERENTIAL CARRIER
DIMENSIONS .
5. Ensure backlash did not change when preload was set. Tighten side bearing cap bolts. Check ring gear
tooth patterns. See GEAR TOOTH CONTACT PATTERNS
article in the GENERAL
INFORMATION section.
DIFFERENTIAL CARRIER DIMENSIONS
(1)
DIFFERENTIAL LUBRICATION SPECIFICATIONS
(1)
ApplicationIn. (mm)
B2200 & B2600i
"M" Differential7.300-7.303 (185.43-185.50)
"P" Differential8.048-8.051 (204.43-204.50)
Miata5.885-5.913 (149.48-150.19)
MPV 4WD
Front7.275-7.303 (184.78-185.50)
Rear8.022-8.051 (203.78-204.50)
Protege 4WD
Rear Differential5.910-5.913 (150.13-150.20)
RX7
Non-Turbo7.300-7.306 (185.43-185.59)
Turbo8.048-8.051 (204.43-204.50)
9298.023-8.051 (203.78-204.50)
(1)See Fig. 12 for measuring point.
ApplicationSpecification
Above 0° F (-18° C)GL-5/SAE 90w
Below 0° F (-18° C)GL-5/SAE 80w
(1)Fill to lower edge of filler plug hole.

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 20 © 2005 Mitchell Repair Information Company, LLC.

Courtesy of MAZDA MOTORS CORP.
Removal & Installation (MPV, MX-6 & 626)
1. Remove steering wheel and combination switch. See STEERING WHEEL & HORN PAD and
COMBINATION SWITCH
under REMOVAL & INSTALLATION. Remove steering lock assembly.
See IGNITION SWITCH & STEERING LOCK
under REMOVAL & INSTALLATION.
2. Remove lower dash panel and A/C duct. Remove lower column cover and steering shaft-to-intermediate
shaft "U" joint bolt. On MPV with A/T, remove shift lever mechanism.
3. On all models, separate steering shaft from intermediate shaft. Remove steering column upper bracket
bolts. Remove steering column. To install, reverse removal procedure. Tighten bolts to specification. See
TORQUE SPECIFICATIONS TABLE
at end of article.
OVERHAUL
STEERING COLUMN
Disassembly
Remove wiring and switches. Clamp column in vise. Turn steering shaft to remove. With a hammer and chisel,
make a groove in steering lock assembly shear screws. Remove shear screws. Remove steering lock.
Inspection
Check all components for damage or wear. Check steering shaft for bends, damage or sheared plastic pins.
Check bearings for excessive play. Replace parts as necessary. Measure length of steering shaft. See Fig. 9
.
Reassembly
To reassemble, reverse disassembly procedure. Grease steering shaft, bushings and bearings. Always use NEW
shear screws.
STEERING SHAFT DIMENSIONS
(1) NOTE: Steering shaft dimension for 929 is not available from manufacturer.
ApplicationLength - In. (mm)
B2200 & B2600i32.69-32.99 (830.0-835.6)
Miata22.09-23.02 (561.1-584.7)
MPV24.05-24.17 (611.0-614.0)
MX-6 & 62624.00-24.05 (609.6-611.1)
Protege & 32323.86-23.94 (606.0-608.0)
RX732.05-32.17 (814.0-817.0)
929(2)
See Fig. 9 for measuring points.

1991 Mazda MX-5 Miata
STEERING COLUMN 1991 STEERING Mazda - Steering Columns
Microsoft
Sunday, July 05, 2009 2:10:42 PMPage 12 © 2005 Mitchell Repair Information Company, LLC.

Fig. 9: Measuring Steering Shaft Dimensions (Except 929)
Courtesy of MAZDA MOTORS CORP.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS
ApplicationFt. Lbs. (N.m)
Column Bracket Bolts/Nuts12-17 (16-23)
Steering Shaft "U" Joint Bolts13-20 (18-27)
Steering Wheel Nut29-36 (39-49)
INCH Lbs. (N.m)
Tilt Lever Adjusting Nut16-25 (1.8-2.8)

1991 Mazda MX-5 Miata
STEERING COLUMN 1991 STEERING Mazda - Steering Columns
Microsoft
Sunday, July 05, 2009 2:10:42 PMPage 14 © 2005 Mitchell Repair Information Company, LLC.