Procedure In Replacement Of Primary And Secondary Pulley, Or In Replacement Of Primary Pulley, Secondary Pulley And VARIATOR Chain
WARNING: This page is about a different variant/trim than selected.
- Measure depth "Lp" from the ST upper face to the primary pulley bearing catch surface at several points and calculate the average.
ST 499575400 GAUGE
- Measure height "Ls" from the drive pinion retainer upper face to the secondary pulley bearing catch surface at several points and calculate the average.
ST 499575400 GAUGE
- Calculate the following formula.
Calculation formula:
T (mm) = B + (Lp - Ls) + 31.601 - A
[T (in) = B + (Lp - Ls) + 1.224 - A]
T: Pulley alignment
A: Specified primary pulley dimension
B: Specified secondary pulley dimension
Lp: Depth from the ST upper face to the primary pulley bearing catch surface
Ls: Depth from the ST upper face to the secondary pulley bearing catch surface
31.601 mm (1.224 in): Constant
Pulley alignment T mm (in) Shim thickness mm (in) 0.050 - 0.150 (0.002 - 0.006) 0.1 (0.004) 0.151 - 0.250 (0.006 - 0.01) 0.2 (0.008) 0.251 - 0.350 (0.01 - 0.014) 0.3 (0.012) 0.351 - 0.450 (0.014 - 0.018) 0.4 (0.016) 0.451 - 0.550 (0.018 - 0.022) 0.5 (0.020) 0.551 - 0.650 (0.022 - 0.026) 0.6 (0.024) 0.651 - 0.750 (0.026 - 0.030) 0.7 (0.028) 0.751 - 0.850 (0.030 - 0.033) 0.8 (0.031) 0.851 - 0.950 (0.033 - 0.037) 0.9 (0.035) - Select one to two shims so that the total thickness meets the value obtained from step 3.
| Part No. | Shim thickness mm (in) |
|---|---|
| 32451AA000 | 0.1 (0.004) |
| 32451AA010 | 0.2 (0.008) |
| 32451AA020 | 0.3 (0.012) |
| 32451AA030 | 0.4 (0.016) |
| 32451AA040 | 0.5 (0.020) |