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catmastertech, Technician
Category: Industrial Equipment
Satisfied Customers: 2356
Experience:  19 years service repairs on CAT equipment.
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416c cat backhoe transmission no oil psi changed out pump

Customer Question

416c cat backhoe transmission no oil psi changed out pump still nothing tried over filling resavoure got psi and movement in all gears but slips .drained oil to full on dip stick no psi again . over filled again works but slips acts like its sucking air.
when shut off it releaves a shot off air from vent
Submitted: 2 years ago.
Category: Industrial Equipment
Expert:  catmastertech replied 2 years ago.

If oil is foamy, that is a good indication it is sucking air.

This can happen if the strainer is plugged.

Did you change the filter and check the strainer?

Did you cut open the old filter and check for debris? Did you find anything?

Are you using 30W transmission oil?

Did you install seals at the strainer?

Are you checking the oil level with the engine running?

Please post the full machine serial number with your reply.