Changing hydraulic fluid

[unknownrider]

Hi folks- I've got a 2001 Bobcat 773 turbo and need to change the hydraulic fluid. Wondering if anyone has any experience with this. Also can someone give me a link to the manual for that machine? I had a great link before but lost it. Thanks. Also, someone told me to run the rpms wide open to save the hyd pumps. I haven't done that, preferring to run the machine about 2400 rpm, which is 200 or so below max. Any comments appreciated.

 

[Tazza]

I drain my fluid by running the machine at idle and pumping it out of the quick couplers. As soon as it starts to spit i shut it down. Re-fill with oil and change the filter, re-start and it should be good to go. Some don't like doing it like this as they feel the pumps run dry, but they never do, yo always have a film of oil. If you kept it running then yes, it would cause damage. Its you call if you do it this way or not though.
If the oil is not contaiminated you can suck the oil out of the reserve tank and re-fill too.
As for running the machine flat out, i never run mine like that. It goes on the conditions, half to 3/4 is generally all i run. Its really just something you do by feel. If the machine bogs down too much, bump it up, if its noisy when digging or turning, bump it up a bit too.

 

[unknownrider]

I drain my fluid by running the machine at idle and pumping it out of the quick couplers. As soon as it starts to spit i shut it down. Re-fill with oil and change the filter, re-start and it should be good to go. Some don't like doing it like this as they feel the pumps run dry, but they never do, yo always have a film of oil. If you kept it running then yes, it would cause damage. Its you call if you do it this way or not though.
If the oil is not contaiminated you can suck the oil out of the reserve tank and re-fill too.
As for running the machine flat out, i never run mine like that. It goes on the conditions, half to 3/4 is generally all i run. Its really just something you do by feel. If the machine bogs down too much, bump it up, if its noisy when digging or turning, bump it up a bit too.

Thanks Tazza. Do you have a link to a repair manual for that machine. I got it on this sight about a year ago. Thanks again.

 

[Tazza]

Thanks Tazza. Do you have a link to a repair manual for that machine. I got it on this sight about a year ago. Thanks again.

I don't. but if you send OldMachinist a nice email with your model number and serial number, he should be able to give you a link.

 

[Ironmule]

I don't. but if you send OldMachinist a nice email with your model number and serial number, he should be able to give you a link.

You can go to tradebit.com and download the whole service manual but I wouldn't recommend printing the whole 965 pages I printed this weekend. eBay has the hard copy for 110 for my t250. Tradebit is 9.95. After my time, paper, and ink, the hard copy is a good deal.

 

[mrdeere1959]

You can go to tradebit.com and download the whole service manual but I wouldn't recommend printing the whole 965 pages I printed this weekend. eBay has the hard copy for 110 for my t250. Tradebit is 9.95. After my time, paper, and ink, the hard copy is a good deal.

$ 101.45 at the dealer. hard copy or cd

 

[donald73d]

You can go to tradebit.com and download the whole service manual but I wouldn't recommend printing the whole 965 pages I printed this weekend. eBay has the hard copy for 110 for my t250. Tradebit is 9.95. After my time, paper, and ink, the hard copy is a good deal.

I wonder if someone like Staples would print it cheap? The world seems to be going towards including a card with your product saying "everything you need (in life) is on the internet". The manufacturer needs to write the pubs in the first place. So there is no savings there. But if printed it would be printed on high speed ink & paper printers at a very fast rate and for pennies. If consumers want to print it it costs mucho bucks in ink/toner and paper and time and if you cannot duplex, you end up with a bigger stack of paper. For things that are dirty (and you are likely to be dirty) paper seems better since I for one do not want to get dirt & grease on my computer. Also for products that provide access to the internet, one might need a printed manual. Having it on the net in addition to paper would seem the best idea. Somehow paying Bobcat $100 for a repair manual to fix things on your Bobcat (that Bobcat built) that you would prefer not break in the first place seems odd.