joeeye59
Senior Member
I'm curious to know whats been going on for people with their backhoes that are similar or like my 1988 JD 310c with how many hours you have gotten out of the main hydraulic pump before you needed to have it serviced and/or replaced?
I'm curious if there was a typical range of common hours to each specific machine thats known when to expect to find your hydraulic pump will be getting weak or going bad? Basically with regular service and taking good care of the unit.
I see from my service records my hydraulic pump had parts replaced at 4427 hours, not that it matters but the parts listed in case you can make sense of this list, the parts were a spring, cushion, cap screw, spacer, washer, plate, adapter.
Now I tried to cross reference the part numbers on the existing work order from back then in 1997 to a print out I got the other day of course in 2008 and none of the part numbers match, so its going to be hard for me to learn whats typically replaced perhaps for only weak pressure... this is what I wanted to learn if them parts were replaced to get back up to running pressure?
I have 9100 hours on it now, so it looks to be 4683 hours were put on the hyd pump with out any other servicing.... so I'd like to look into what I need to do to see if the hyd pump is weak or going bad.... am I correct to assume a hyd fluid oil sample can be tested to see if the hyd pump is going bad to catch it in time before it blows?
And at some point and place in the hyd lines I can hook up a gauge to look at the hyd pump pressure reading to see if its going weak?
thanks for any advice and input...
I'm curious if there was a typical range of common hours to each specific machine thats known when to expect to find your hydraulic pump will be getting weak or going bad? Basically with regular service and taking good care of the unit.
I see from my service records my hydraulic pump had parts replaced at 4427 hours, not that it matters but the parts listed in case you can make sense of this list, the parts were a spring, cushion, cap screw, spacer, washer, plate, adapter.
Now I tried to cross reference the part numbers on the existing work order from back then in 1997 to a print out I got the other day of course in 2008 and none of the part numbers match, so its going to be hard for me to learn whats typically replaced perhaps for only weak pressure... this is what I wanted to learn if them parts were replaced to get back up to running pressure?
I have 9100 hours on it now, so it looks to be 4683 hours were put on the hyd pump with out any other servicing.... so I'd like to look into what I need to do to see if the hyd pump is weak or going bad.... am I correct to assume a hyd fluid oil sample can be tested to see if the hyd pump is going bad to catch it in time before it blows?
And at some point and place in the hyd lines I can hook up a gauge to look at the hyd pump pressure reading to see if its going weak?
thanks for any advice and input...