Hydraulic fluid for Bobcat - PlowSite.comô - Snow Plowing & Ice Management Forum

Register free!

Old 10-19-2003, 03:18 PM
NoStockBikes!! NoStockBikes!! is offline
Senior Member
Join Date: Oct 2002
Location: Minnesota
Posts: 215
Hydraulic fluid for Bobcat

I jsut ordered the service manual for my (new to me) 743B so I can get into it a bit more. Changed the oil, and that was in shti shape, IMO. Replaced it w/ Amsoil, and it seems to run a bit happier already. Judging from the shape the motor oil was in, I'm betting I want to change the hydraulic fluid, again likely to a synthetic so that it will pump happily in teh dead of winter.

I'm getting closer to my question. My Western plow was my first real experience w/ hydraulic fluid. When I was growing up on the farm, it was out of mind, out of sight to me. My dad and the hired man handled the maintenance, I was just an operator. Everybody here said to use ATF for the pump fluid for my plow. OK, I used synthetic ATF fluid, so I'm golden to pump up and down down to -80f, and it's not gonna cook or breakdown as fast as normal stuff. So, would I just do the same thing for my Bobcat? I'm guessing it's a few gallons (manual will tell me that) but is that a viable option, or is there a difference between Bobcat hydraulics and snowplow hydraulics?

"Hmm, interesting. Maybe someday UNICEF will get into the snow removal business. Until then, I'm the guy to see."

'02 Duramax Crew Cab
8' Western Poly Pro Ultramount
743B Bobcat
WCC Rigid Chopper
<a href=http://www.cruisebikes.net>CruiseBikes.net</a>
Reply With Quote
Old 10-19-2003, 04:04 PM
Garagekeeper Garagekeeper is offline
Senior Member
Join Date: Jan 2002
Location: Glenview, Ill.
Posts: 458
Hydraulic Fluids

According to Bobcat that if your not using their hydraulic fluid they said to use 5w30 motor oil.
I would believe that any quality hydraulic fluid would work just fine as long as it meets Bobcats specs.
I do run low temp hydraulic fluid in my Bobcat, but I normally don't run it very long during the warmer weather.
Used it last summer in 90 plus degree weather grading for a few hours and did have the pump start squealing with the 5w10 low temp fluid.
Took it quite a while for it to quiet down and get the air out of the system.
Welding and Equipment Services
Snowplow Sales & Service
Reply With Quote
Old 10-21-2003, 06:43 AM
nben's Avatar
nben nben is offline
Senior Member
Join Date: Jan 2003
Location: Southern Maine
Posts: 101
We run 5w30 in our 743B. It gets run hard all year round and we have no problems. You will also want to change the fill cap if it has been that neglected, it serves as a vent breather for the reservoir and has a filter in it. One thing to watch for, the earlier 743B's had vane type hydraulic pumps that have been fairly problematic. The newer ones are gear style. The manual you ordered can help you figure out which you have by using the serial #. The older style can be changed to the newer if it gives you trouble.

Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Could it be Frozen Hydraulic Fluid? Marchon Commercial Snow Removal 19 12-16-2004 09:32 PM
Fisher Hydraulic Fluid? CPSS Commercial Snow Removal 7 09-01-2004 02:03 AM
Hydraulic Fluid Help.... dmontgomery Commercial Snow Removal 0 11-17-2003 04:33 PM
Using ATF instead of Hydraulic Fluid SlimJim Z71 Commercial Snow Removal 18 09-23-2001 05:23 PM
Hydraulic Fluid Help Psyclopse Commercial Snow Removal 4 12-28-2000 09:36 PM

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Copyright ©2000 - 2012 PlowSite.comô Grand View Media
All times are GMT -5. The time now is 11:28 PM.

Page generated in 0.02270 seconds with 8 queries