IMPORTANTBefore commencing re-assembly all parts should be washed in clean petrol (not paraffin) and all traces of grit and dirt removed. The countersunk holes in the two locking plates and the rotor drive plate must be cleaned up with a countersink bit to remove burrs caused by the original locking of the screws. After cleaning, all ball races, trunnions, vanes, vane shaft and rotor drive plate, must be well oiled with clean engine oil. All tools and the bench used for re-assembly must be scrupulously clean to avoid any dust or dirt entering the supercharger. Remember it is a precision mechanism assembled to fine limits. When tightening a ring of nuts or screws be sure to tighten evenly to avoid distortion. After overhaul, particularly if new parts have been fitted, the supercharger should be run in again in accordance with the servicing instructions. When ordering new parts, specification number and serial number of supercharger must in all cases be quoted - this is essential. |
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Shorrocks Servicing Tips page 3 |
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THERE is an 'important' preamble to this section with regard to general assembly practise. READ IT HERE |
Apologies for the photographs which are from photocopies,
hence the poor quality.
This will print on two pages. |
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REASSEMBLINGRotor ball race. Assemble rotor ball race and rotor locking plate. Be sure to lock al countersunk screws with a centre punch (Fig. 11).
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Rotor. Replace rotor and locking plate, locking all countersunk screws (Fig. 12). |
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Vane assembly. Replace vane assembly and trunnions, ensuring that the original shims are first placed on the vane shaft (Fig. 13). Replace vane shaft nut and tighten, using special box spanner. Replace split pin or lock tab washer. |
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Vane clearance. Check vane clearance between vanes and rear end plate (Fig. 14). The clearance must be between 0.004" and 0.006". This may be adjusted by the use of extra shims. |
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Replace casing. Care must be taken to ensure that the casing is replaced the correct
way round for the rotation required (see next page). |
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| GO TO PAGE 4 OF THE INSTRUCTIONS. | |||