1. Before attempting to overhaul the differential, compare the cost of the required new components with the cost of a new or remanufactured unit, as replacing the unit may be cheaper than overhauling.
2. Note that if the differential driven gear or pinion on the transmission output shaft is to be replaced, they must be replaced as a matched pair.
3. Special tools are required to preload the differential bearings, so it is recommended that the differential bulkhead be entrusted to an Opel dealer.
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