1991 MAZDA MIATA Factory Service Manual

Fig. 15: Releasing Trapped Air
Courtesy of MAZDA MOTORS CORP.
5. Fold NEW band back by pulling on end with pliers. See Fig. 16
. Band should be folded in direction
opposite forward revolvin
g direction of axle shaft. Lock end of band by bending locking clips.

1991 Mazda MX-5 Miata
1990-93 DRIVE AXLES Axle Shafts - MX-5 Miata
Microsoft
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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
Sunday, July 05, 2009 2:16:33 PMPage 16 © 2005 Mitchell Repair Information Company, LLC.

ApplicationFt. Lbs. (N.m)
Axle Shaft Lock Nut (1) 159-217 (216-294)
Differential-To-Axle Shaft Flange Nuts (4)40-47 (54-64)
Upper Control Arm Bolt/Nut34-49 (46-66)
Wheel Lug Nuts65-87 (88-118)
(1)Non-reuseable part. Manufacturer recommends replacing axle shaft lock nut on installation.

1991 Mazda MX-5 Miata
1990-93 DRIVE AXLES Axle Shafts - MX-5 Miata
Microsoft
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BRAKE SYSTEM
1991 BRAKES Mazda Brake System
DESCRIPTION & OPERATION
All models use hydraulic-operated brake system with a tandem master cylinder and a power brake unit.
BRAKE SYSTEM BLEEDING
BRAKE LINE BLEEDING SEQUENCE
ADJUSTMENTS
MASTER CYLINDER PUSH ROD (NAVAJO)
1. Remove master cylinder to gain access to push rod. To check screw adjustment, fabricate a gauge. See
Fig. 1
. NOTE: For information on anti-lock brake systems, see appropriate ANTI-LOCK BRAKE
SYSTEM article in the BRAKES Section.
NOTE: See BRAKE BLEEDING article in the BRAKES Section.
ApplicationSequence
Protege & 323RR, LR, LF, RF
RX7 (1) RR, LR, RF, LF
All OthersLongest Line First
(1)If rear caliper has not been disassembled, open upper bleed valve only.
NOTE: Push rod has an adjustment screw to maintain correct distance between
booster push rod and master cylinder piston. If push rod is adjusted too long, it
prevents master cylinder piston from completely releasing hydraulic pressure,
causing brakes to drag. If push rod is adjusted too short, it causes excessive
pedal travel and an undesirable clunk in booster area.

1991 Mazda MX-5 Miata
BRAKE SYSTEM 1991 BRAKES Mazda Brake System

1991 Mazda MX-5 Miata
BRAKE SYSTEM 1991 BRAKES Mazda Brake System
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Fig. 1: Adjusting Brake Booster Push Rod (Navajo)
Courtesy of FORD MOTOR CO.
2. Place gauge against master cylinder mounting surface of booster. Adjust push rod screw by turning it
until end of screw just touches inner edge of gauge slot.
REAR BRAKE SHOES
B2200 & B2600i 2WD
NOTE: Self-adjusting rear brakes only require manual adjustment when brake shoe is
replaced or operating lever is moved during service operations.

1991 Mazda MX-5 Miata
BRAKE SYSTEM 1991 BRAKES Mazda Brake System
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1. Raise and support rear of vehicle. Ensure parking brake is released. Remove plugs from rear of backing
plate (one below wheel cylinder, other near outer diameter of backing plate). Insert a screwdriver through
hole below wheel cylinder. Rotate star wheel adjuster in direction of arrow stamped on backing plate until
wheel locks.
2. Insert a drift through other hole in backing plate. Push pawl back from adjuster and back off adjuster 6-7
notches. Ensure wheel rotates freely. Perform same procedure on both sides. Adjust parking brake.
B2600i 4WD & MPV
1. Raise and support rear of vehicle. Ensure parking brake is released. Remove plugs from rear of backing
plate. Insert a screwdriver through hole for star wheel. Rotate adjuster in direction of arrow stamped on
backing plate until wheel locks.
2. Insert a drift through other hole in backing plate. Push pawl back from adjuster and back off adjuster 8-10
notches (13-15 notches on MPV). Ensure wheel rotates freely. Perform same procedure on both sides.
Adjust parking brake.
MX-6, Protege, 323 & 626
1. Raise and support rear of vehicle. Remove wheel. Release parking brake. Remove lock nut from axle
shaft. Remove brake drum. Insert screwdriver between adjusting plate and quadrant. Twist screwdriver to
disen
gage teeth. See Fig. 2 or Fig. 3 .

1991 Mazda MX-5 Miata
BRAKE SYSTEM 1991 BRAKES Mazda Brake System
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Fig. 2: Moving Quadrant on Rear Brake Adj. (MX-6 & 626)
Courtesy of MAZDA MOTORS CORP.

1991 Mazda MX-5 Miata
BRAKE SYSTEM 1991 BRAKES Mazda Brake System
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Fig. 3: Moving Quadrant on Rear Brake Adj. (Typical Protege & 323)
Courtesy of MAZDA MOTORS CORP.
2. Push adjusting lever toward backing plate. Install brake drum. Install new lock nut, and secure by
crimping. Operate parking brake a few times to reset adjuster. Adjust parking brake.
Navajo
1. Raise and support rear of vehicle. If drums are installed on vehicle, remove cover from adjusting hole at
bottom of brake backing plate. Turn adjusting screw with a brake adjusting tool until shoes drag against
brake drum and lock drum.
2. When shoes are against drum, loosen adjusting screw an additional 10-12 notches so drum rotates freely.
If drum does not rotate freely, remove wheel and drum and vacuum dust and dirt from linings. Use
sandpaper and remove rust from points where shoes touch backing plate. Apply a light coating of
molybdenum grease to brake shoe-to-backing plate contact points. Install wheel and drum and adjust
shoes.
3. To adjust brakes with rear drums removed, first clean all rust and dirt on points where shoes touch
backing plate and apply a small amount of molybdenum grease to those areas. Use a brake shoe
adjustment gauge and adjust brakes to inside diameter of drum braking surface.
4. Reverse tool and adjust brake shoes until they touch gauge. Gauge contact points on shoes must be
parallel to vehicle with center line throu
gh center of axle. Hold automatic adjusting lever out of

1991 Mazda MX-5 Miata
BRAKE SYSTEM 1991 BRAKES Mazda Brake System
Microsoft
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