2-6 Brake Clearance Measurement/Adjustment
2-6 BRAKE CLEARANCE MEASUREMENT/ADJUSTMENTPreparation Before Servicing
1. Print out the measurement/adjustment value input sheet. (See MEASUREMENT/ADJUSTMENT VALUE INPUT SHEET.)
NOTE:
- When performing the measurement/adjustment, input the measured and calculated values into the measurement/adjustment value input sheet.
- When performing the other measurements/adjustments, if the measurement/adjustment value input sheet has been printed out, use the printed sheet.
2-6 Brake Clearance Measurement
1. Set the end cover for the assembled part on the workbench as shown in the figure.
A : Rubber plate
CAUTION: To reduce error during the 2-6 brake clearance measurement, use the rubber plates to adjust the alignment surface of the end cover with the transaxle case so that it is level.
2. Measure the retainer thickness of the springs and retainer component.
NOTE:
- Recommended measuring instrument: Micrometer
- Springs and retainer component size: Inner diameter approx. 150.6 mm {5.929 in}
3. Input the measured retainer thickness of the springs and retainer component into the measurement/adjustment value input sheet.
4. Assemble the retaining plate.
NOTE: Retaining plate size: Inner diameter approx. 148 mm {5.83 in}
5. Install the SST.
6. Place a 98-196 N {10.0-19.9 kgf, 23.0-44.0 lbf} weight on the SST.
A : Weight (V-block)
CAUTION: To reduce error during the 2-6 brake clearance measurement, place the weight near the center of the SST.
NOTE: Use a V-block as a weight.
7. Measure distance A shown in the figure in four locations (each separated by 90°) and calculate the average value of distance A.
A : Distance A
B : End cover end (alignment surface with brake housing)
C : Retaining plate end
NOTE:
- Recommended measuring instrument: Depth micrometer
- Measure the splines of the retaining plate using a depth micrometer.
8. Input the measured distance A and calculated distance A average value into the measurement/adjustment value input sheet.
9. Perform the following calculation to calculate the 2-6 brake clearance.
2-6 brake clearance = C - A
A : Retainer thickness of springs and retainer component
C : Average value of distance A
Note
Example
A : Retainer thickness of springs and retainer component is 1.425 mm {0.05610 in}
C : Average value of distance A is 2.665 mm {0.10492 in}
2-6 brake clearance = 2.665 mm {0.10492 in} - 1.425 mm {0.05610 in} = 1.240 mm {0.04882 in}
10. Input the calculated 2-6 brake clearance into the measurement/adjustment value input sheet.
11. Verify that the 2-6 brake clearance satisfies the specification.
Specification
1.000-1.200 mm {0.03938-0.04724 in}
- If not within the specification, adjust the 2-6 brake clearance. (See Brake Clearance Adjustment.)
12. Remove the weight on the SST.
A : Weight (V-block)
13. Remove the SST.
14. Take the end cover off the rubber plates.
2-6 Brake Clearance Adjustment
1. Remove the weight on the SST.
A : Weight (V-block)
2. Remove the SST.
3. Remove the retaining plate.
4. Measure the thickness of the removed retaining plate.
NOTE: Recommended measuring instrument: Micrometer
5. Input the measured retaining plate thickness into the measurement/adjustment value input sheet.
6. Select the appropriate retaining plate from the following table:
Range = D + G
D: 2-6 brake clearance
G: Thickness of removed retaining plate
Note
Example
D : 2-6 brake clearance is 1.240 mm {0.04882 in}
G : Thickness of removed retaining plate is 2.015 mm {0.07933 in}
Range = 1.240 mm {0.04882 in} + 2.015 mm {0.07933 in} = 3.255 mm {0.12815 in}, the selected retaining plate has a thickness of 2.2 mm {0.087 in}.
7. Assemble the selected retaining plate.
8. Perform the 2-6 brake clearance measurement from Step 5. (See Brake Clearance Measurement.)