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 the depth "Ls" from the ST 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 - A + Lp - Ls - 28.602
[T (in) = B - A + Lp - Ls - 1.126]
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
28.602 mm (1.126 in): Constant
Pulley alignment T mm (in) Thickness of shim mm (in) -0.05 - 0.049 (-0.002 - 0.002) No shims 0.050 - 0.149(0.002 - 0.006) 0.1 (0.004) 0.150 - 0.249(0.006 - 0.010) 0.2 (0.008) 0.250 - 0.349(0.010 - 0.014) 0.3 (0.012) 0.350 - 0.449(0.014 - 0.018) 0.4 (0.016) 0.450 - 0.549(0.018 - 0.022) 0.5 (0.020) 0.550 - 0.649(0.022 - 0.026) 0.6 (0.024) 0.650 - 0.749(0.026 - 0.029) 0.7 (0.028) 0.750 - 0.849(0.029 - 0.033) 0.8 (0.031) 0.850 - 0.949(0.033 - 0.037) 0.9 (0.035) 0.950 - 1.049(0.037 - 0.041) 1.0 (0.039) 1.050 - 1.149(0.041 - 0.045) 1.1 (0.043) - Select one to two shims so that the total thickness meets the value obtained from step 3.
| Part No. | Shim thickness mm (in) |
|---|---|
| 32451AA050 | 0.1 (0.004) |
| 32451AA060 | 0.2 (0.008) |
| 32451AA070 | 0.3 (0.012) |
| 32451AA080 | 0.4 (0.016) |
| 32451AA090 | 0.5 (0.020) |
| 32451AA100 | 0.6 (0.024) |