When A Spring Scale Is Used
WHEN A SPRING SCALE IS USED1. Carry out the confirmation before the looseness check with the same manner as the check using a push-pull gauge.
2. At the position that is 25 mm above from the wheel center, bind the tire and the wheel rim with a cord for both the front and rear sides, and fix them with a tape not to loose vertically.
3. Set the spring scale to the cord bound as above. At this time, the point to pull shall be in the dimension between the "Position C" and "Position D" by 515mm, and the position on the vehicle front side shall be the "Position C" and the vehicle rear side shall be the "Position D".
4. To stabilize the relationship between the load and fluctuation, pull with the specified load by 10ON of "Position C", "Position D", and "Position C" using the spring scale. Note that the pulled load on each position shall be extracted.
5. Using the spring scale, carry out the procedure below to read the value on the dial gauge and calculate the looseness.
NOTE: The ± sign acquired with the calculation result shall be used as it is.
1) While pulling the "Position D" with the specified load by 100 N, read the values on the dial gauges in the "Position a" and "Position V. The values on the dial gauges at this time shall respectively be "aD" and "bD".
2) Remove the load at the "Position D". Then while pulling the "Position C" with the specified load by 100N, read the values on the dial gauge in the "Position a" and "Position V. The values on the dial gauges at this time shall respectively be "aC" and "bC".
3) Make calculation taking the value differences of the dial gauge positions a and b which were read while pulling the "Position C" and "Position D" as each fluctuation.
^ Fluctuation of the dial gauge position a: aC - aD
^ Fluctuation of the dial gauge position b: bC - bD
4) Calculate each fluctuation difference of the dial gauge positions a and b acquired above for looseness. Perform the procedure above twice.
Fluctuation of the dial gauge position a - Fluctuation of the dial gauge position b
5) Calculate the average of the looseness calculated twice.
6. If the average exceeds the standard value, check the ball joint rotation torque. (Tie Rod End Ball Joint Rotation Torque Check, Testing and Inspection)
Standard value: Within ± 2.0 mm
NOTE: Measure the tie-rod looseness on the right side and left side respectively.