Idle gear inspection (4JJ3 without DPD)

1. Idle gear inspection

1) Measure the idle gear shaft outer diameter using a micrometer.

Note

  • If the measured value exceeds the limit, replace the idle gear shaft.
Idle gear shaft outer diameter
Idle gear shaft
Standard value
Limit
A
44.950 to 44.975 mm { 1.7697 to 1.7707 in }
44.80 mm { 1.7638 in }
C, D
24.959 to 24.980 mm { 0.9826 to 0.9835 in }
24.80 mm { 0.9764 in }

2) Measure the inner diameter of the idle gear bushing using a dial gauge.

3) Calculate the clearance between the idle gear shaft outer diameter and the idle gear bushing inner diameter.

Note

  • If the measured value exceeds the limit, replace the idle gear or idle gear shaft.
Clearance between idle gear A and the shaft
Idle gear shaft
Standard value
Limit
A
0.025 to 0.075 mm { 0.0010 to 0.0030 in }
0.20 mm { 0.0079 in }
C, D
0.020 to 0.062 mm { 0.0008 to 0.0024 in }
0.20 mm { 0.0079 in }