Volvo Steering Pump 855860 Now 855872 Question

Hello:

The new steering pump 855872 is a direct replacement for power steering pump 855860. However, 855860 had a pulley that was held on by 4 bolts, but the new power steering pump has a pressure fitted pulley that goes over the shaft. So the question is what is the new pulley for the new steering pump? 

Thank you 

J.d.

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On that pump shaft is a hub and on that hub is a pulley, the pulley is fixed on the hub with 4 bolts , the hub of the old pump needs to be transferred to the new pump because it is no longer available.

Thank you,

FRANK

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