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catmastertech
catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 2305
Experience:  Field service technician for CAT 19 years.
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Have a 416 cat backhoe. The power steering will not work

Customer Question

have a 416 cat backhoe. The power steering will not work unless loader bucket is being raised. what might be the problem
Submitted: 1 year ago.
Category: Construction and Road Equipment
Expert:  catmastertech replied 1 year ago.
Hello, The problem is either the resolver seals in the loader valve or the inlet priority valve of the inlet section.
Expert:  catmastertech replied 1 year ago.
Either way, the best thing to do is to reseal the whole valve.
Expert:  catmastertech replied 1 year ago.
If you do not have time to reseal the whole valve, start with replacing the resolver check valves.
Expert:  catmastertech replied 1 year ago.
You have one primary and one secondary check valve in each valve section and one secondary resolver in the inlet section.
Expert:  catmastertech replied 1 year ago.
The secondary resolvers are access through holes in the frame behind the right rear wheel.
Expert:  catmastertech replied 1 year ago.
The primary resolver check valve are under the bottom caps of each spool. These are harder to access and should be ok unless you are experiencing cylinder drifting on the loader.
Customer: replied 1 year ago.
thank you, ***** ***** try this
Expert:  catmastertech replied 1 year ago.
You're welcome.If you need more help on this problem, please post the full machine serial number with your reply.