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I35.30-0002-01
If the old gear train is re-installed, the thickness of the old shim set remains unchanged.
Before installing the new gear train, make sure the set number (B) marked on the ring gear matches the number on the drive pinion.
Ring gear and drive pinion are always to be replaced as a complete set.
A Tooth combination number
B Set number
C Variation number of bevelled pinion
1 Note down variation number of bevelled pinion (C) of gear train removed.
2 Determine thickness of old shim set with a micrometer.
3 If the variation number of the bevelled pinion (C) is positive (+), subtract the value noted down in step 1 from the thickess of the old shim set determined in step 2.
If the variation number of the bevelled pinion (C) is negative (-), add the value noted down in step 1 to the thickness of the old shim set determined in step 2.
The value thus calculated yields the thickness of the standard shim set.
4 Note down variation number of bevelled pinion (C) on new gear train.
5 If the variation number of the bevelled pinion (C) is negative (-), subtract the value noted down in step 4 from the thickness of the standard shim set calculated in step 3.
If the variation number of the bevelled pinion (C) is positive (+), add the value noted down in step 4 to the thickness of the standard shim set calculated in step 3.
The value thus calculated yields the required thickness of the shims at the drive pinion.
Specimen calculations | Inch | Millimeter |
1. Thickness of old shim set | 0.030 | 0.76 |
Variation number of old bevelled pinion, PC +2 (+ 0.05 mm) | - 0.002 | - 0.05 |
Thickness of standard shim set | 0.028 | 0.71 |
Variation number of new bevelled pinion, PC +5 (+ 0.13 mm) | +0.005 | +0.13 |
Thickness of new shim set | 0.033 | 0.84 |
2. Thickness of old shim set | 0.030 | 0.76 |
Variation number of old bevelled pinion, PC -2 (- 0.05 mm) | +0.002 | +0.05 |
Thickness of standard shim set | 0.032 | 0.81 |
Variation number of new bevelled pinion, PC +5 (+ 0.13 mm) | +0.005 | +0.13 |
Thickness of new shim set | 0.037 | 0.94 |
3. Thickness of old shim set | 0.030 | 0.76 |
Variation number of old bevelled pinion, PC +2 (+ 0.05 mm) | - 0.002 | - 0.05 |
Thickness of standard shim set | 0.028 | 0.71 |
Variation number of new bevelled pinion, PC -5 (- 0.13 mm) | - 0.005 | - 0.13 |
Thickness of new shim set | 0.023 | 0.58 |
4. Thickness of old shim set | 0.030 | 0.76 |
Variation number of old bevelled pinion, PC -2 (- 0.05 mm) | +0.002 | +0.05 |
Thickness of standard shim set | 0.032 | 0.81 |
Variation number of new bevelled pinion, PC -5 (- 0.13 mm) | - 0.005 | - 0.13 |
Thickness of new shim set | 0.027 | 0.68 |