Maintenance  of Series H Right Angle Gearboxes  

A. It is the first time that New gearbox has bee used, after running for 300 hours you must renew the gear oil. After shutdown the oil which is hot is discharged at once. After during running each 2,000 hrs. of running or amounted to 6 months of natural time taking first achievement of them the gear oil should be renewed usually.   

B. All bolts are inspected and screwed down regularly.   

C. After the gearbox working 20,000 hrs. the clearance and wear conditions should be inspected for two end bearings of the horizontal shaft and upper bearings of the vertical shaft, and at exceeding limit should be renewed.

Attention: new bearing ought to be heated in lubricant first, before is set to shaft. The down  

bearing of the vertical shaft isn’t liable to dismount owing to its down end there is a pump pulley whose shrink range is much, so the working life of the bearing has been designed to be very long. Under conditions that the gearbox uses and lubricates normally its working life is generally from 70,000 to 100,000 hours.   

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