1996 TOYOTA LAND CRUISER parking

BR1CD−01
BR−2
−
BRAKE TROUBLESHOOTING
984
Author: Date:
1996 LAND CRUISER (RM451U)
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers \
indicate the priority of the likely
cause of the problem. Check each part in order. If necessary, replace these parts.
SymptomSuspect AreaSee page
Low pedal or spongy pedal
4. Fluid leaks for brake system
5. Air in brake system
6. Piston seals: worn or damaged
7. Master cylinder: faulty
8. Booster push rod: out of adjustment−
−
BR−33
BR−33 BR−9
BR−20
Brake drag
1. Brake pedal freeplay: minimal
2. Parking brake lever travel: out of adjustment
3. Parking brake wire: sticking
4. Pad: cracked or distorted
5. Piston: stuck
6. Piston: frozen
7. Tension or return spring: faulty
8. Booster push rod: out of adjustment
9. . Vacuum leaks for booster system
10.. Master cylinder: faultyBR−6
BR−8 −
BR−21
BR−30
BR−33
BR−33
BR−33
BR−33
BR−39
BR−20
BR−18 BR−9
Brake pull
1. Piston: stuck
2. Pad: oily
3. Piston: frozen
4. Disc: Scored
5. Pad: cracked or distortedBR−33
BR−33
BR−21
BR−30
BR−33
BR−33
BR−33
BR−33
BR−21
BR−30
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BR3297
Pedal Reserve Distancea
−
BRAKE BRAKE PEDAL
BR−7
989
Author: Date:
1996 LAND CRUISER (RM451U)
If incorrect, check the stop light switch clearance.
If the clearance is OK, then troubleshoot the brake system.
4. CHECK PEDAL RESERVE DISTANCE
Release the parking brake.
With the engine running, depress the pedal and measure
the pedal reserve distance, as shown.
Pedal reserve distance, ’a’, at 490 N (50 kgf, 110.2lbf):
More than 68 mm (2.68 in.)
If the reserve distance incorrect, troubleshoot the brake sys-
tem.
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BR4774
BR1CG−01
BR4775
BR−8
−
BRAKE PARKING BRAKE LEVER
990
Author: Date:
1996 LAND CRUISER (RM451U)
PARKING BRAKE LEVER
ON−VEHICLE INSPECTION
1. CHECK THAT PARKING BRAKE LEVER TRAVEL IS
CORRECT
Pull the parking brake lever all the way up, and count the num-
ber of clicks.
Parking brake lever travel at 196 N (20 kgf, 44.1 lbf):
7 − 9 clicks
If incorrect, adjust the parking brake.
2. IF NECESSARY, ADJUST PARKING BRAKE
HINT:
Before adjusting the parking brake, make sure that the rear
brake shoe clearance has been adjusted. For shoe clearance
adjustment (See page BR−42).
(a) Remove the rear console box.
(b) Loosen the lock nut and turn the adjusting nut until the le-
ver travel is correct.
(c) Tighten the lock nut.
Torque: 5.4 N·m (55 kgf·cm, 48 in.·lbf)
(d) Install the rear console box.
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BR1D7−01
−
BRAKE PARKING BRAKE
BR−39
1021
Author: Date:
1996 LAND CRUISER (RM451U)
PARKING BRAKE
COMPONENTS
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BR1D8−04
BR−40
−
BRAKE PARKING BRAKE
1996 LAND CRUISER (RM451U)
DISASSEMBLY
1. REMOVE REAR WHEEL
2. REMOVE REAR DISC BRAKE ASSEMBLY
(a) Remove the 2 mounting bolts and remove the disc brake assembly.
Torque: 88 N·m (900 kgf·cm, 65 ft·lbf)
(b) Suspend the disc brake assembly securely. Ensure that the hose is not stretched.
3. REMOVE DISC
Place the matchmarks on the disc and rear hub, and remove the
disc.
HINT:
If the disc cannot be removed easily, turn the shoe adjuster until
the wheel turns freely.
4. REMOVE TENSION SPRING
Using needle −nose pliers, remove the tension spring.
5. REMOVE SHOE RETURN SPRINGS
Using SST, remove the shoe return springs. SST 09717−20010
HINT:
Using SST, install the front shoe return spring and then install
the rear return spring. SST 09718−20010
6. REMOVE SHOE STRUT WITH SPRING
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−
BRAKE PARKING BRAKE
BR−41
1996 LAND CRUISER (RM451U)
7. REMOVE REAR SHOE, ADJUSTER AND TENSION
SPRING
(a) Slide out the rear shoe, and remove the rear shoe and ad-
juster.
(b) Remove the 2 shoe hold −down spring cups, spring and
pin.
(c) Remove the lower side tension spring.
8. REMOVE FRONT SHOE
(a) Slide out the front shoe.
(b) Remove the shoe 2 hold −down spring cups, springs and
pin.
(c) Disconnect the parking brake cable from the parking
brake shoe lever.
9. IF NECESSARY, REMOVE AND DISASSEMBLE PARKING BRAKE BELLCRANK ASSEMBLY
(a) Using a screwdriver, remove the C −washer.
(b) Remove the pin and disconnect the parking brake cable No.2 from the bellcrank.
(c) Remove the clip.
(d) Remove the pin and clip, then disconnect the parking
brake cable.
(e) Remove the 2 tension springs.
(f) Remove the 2 bolts and parking brake bellcrank assem- bly.
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)
(g) Remove the boot from parking brake bellcrank bracket.
(h) Using a screwdriver, remove the C −washer and pin.
(i) Remove the parking brake bellcrank from the bell crank bracket.
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BR1D9−02
BR0897
BR0828
R00343Clearance Shim
BR−42
−
BRAKE PARKING BRAKE
1996 LAND CRUISER (RM451U)
INSPECTION
1. INSPECT DISASSEMBLED PARTS
Inspect the disassembled parts for wear, rust or damage.
2. MEASURE BRAKE SHOE LINING THICKNESS
Using a ruler, measure the thickness of the shoe lining. Standard thickness: 4.0 mm (0.157 in.)
Minimum thickness: 1.0 mm (0.039 in.)
If the lining thickness is at the minimum thickness or less, or if
there is extremely uneven wear, replace the brake shoe.
3. MEASURE BRAKE DISC INSIDE DIAMETER
Using a vernier calipers, measure the inside diameter of the
disc. Standard inside diameter: 230 mm (9.06 in.)
Maximum inside diameter: 231 mm (9.09 in.)
Replace the disc if the inside diameter is at the maximum value
or more. Replace the disc or grind it with a lathe if the disc is
scored or is worn unevenly.
4. INSPECT PARKING BRAKE LINING AND DISC FOR PROPER CONTACT
Apply chalk to the inside surface of the disc, then grind down
the brake shoe lining to fit. If the contact between the disc and
the brake shoe lining is improper, repair it using a brake shoe
grinder or replace the brake shoe assembly.
5. MEASURE CLEARANCE BETWEEN PARKING BRAKE SHOE AND LEVER
Using a feeler gauge, measure the clearance.
Standard clearance: Less than 0.35 mm (0.0138 in.)
If the clearance is not within the specification, replace the shim
with one of the correct size.
Shim ThicknessShim Thickness
0.3 mm (0.012 in.)0.9 mm (0.035 in.)
0.6 mm (0.024 in.)
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−
BRAKE PARKING BRAKE
BR−43
1996 LAND CRUISER (RM451U)
6. IF NECESSARY, REPLACE SHIM
(a) Using a screwdriver, remove the C −washer.
(b) Remove the park ing brake shoe lever, and install the cor-
rect size shim.
(c) Using needle −nose pliers, install the parking brake shoe
lever with a new C −washer.
(d) Remeasure the clearance.
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