Hansen P4 Multistage Gear Units

What type of lubrication should be used?

Mineral oils containing EP additives, which increase oil film load capacity should be used.  Refer to the P4 service manual for recommended oil types. 

What type of lubrication method does the P4 use?
What type of lubrication should be used?
What are backstops?
How often do I change the oil?

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