Oil & Fuel 50hr. Service Torque Specs - ? (BX25)

/ 50hr. Service Torque Specs - ? (BX25) #1  

HeLa

Gold Member
Joined
May 19, 2007
Messages
273
Location
Hunterdon County, NJ
Tractor
Kubota BX25 TLB
hi all.

long-time reader, first-time poster.

i finally bought my BX25 last fall and the 50hr. service is approaching. i found several informative links about doing this myself, but i was surprised not to find information anywhere about torque specs for relevant plugs.

anyone have torque specs for front axle drain/bleed plugs, oil drain plug, transmission drain plug, transmission strainer, etc... ?

also, should the washers on these plugs be replaced? i'm largely going by this link, which is great, but doesn't mention them:
http://www.messicks.com/Articles/KubotaBX-Service.aspx

would be much appreciated.

thanks.
-h
 
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/ 50hr. Service Torque Specs - ? (BX25) #4  
Look a little deeper in your Owner's Manual... There's a section in there that has the torque values for each type of bolt that is used on the tractor. Match the markings on the bolt head to the values in the chart and you're good! ;)
 
/ 50hr. Service Torque Specs - ? (BX25)
  • Thread Starter
#5  
Look a little deeper in your Owner's Manual... There's a section in there that has the torque values for each type of bolt that is used on the tractor. Match the markings on the bolt head to the values in the chart and you're good! ;)

ahhhh, good point. now that you mention it i think i did see a chart like that :ashamed: will check that tonight.
 
/ 50hr. Service Torque Specs - ? (BX25) #6  
Hela,
I'm no big time wrench, having said this, I would tell you to forget the torques specs and just use feel and common sense. Most of the bolts involved in the 50-hour maintenance have little meat to bite on. So if you go cranking em, you'll either strip em or breakem. And besides there isn't a lot of room to use a torque wrench.
I would also advise you to this this type of filter wrench for the oil filter. Using a ratchet extension, you can remove the filter without having to remove the loader, the guard, and the cowl.
Good luck.
 

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/ 50hr. Service Torque Specs - ? (BX25) #7  
ahhhh, good point. now that you mention it i think i did see a chart like that :ashamed: will check that tonight.

No problem, we all do stuff like that and if someone tells ya they don't, they're fibbing! :laughing:
 
/ 50hr. Service Torque Specs - ? (BX25) #8  
ahhhh, good point. now that you mention it i think i did see a chart like that :ashamed: will check that tonight.

And as I think on it, some things you might want to gather up...

1) As AStanton says above, that type of oil filter will greatly increase your chances of success! But, have a big screwdriver handy to punch through the filter if needed to get it off. They install the filter, then paint the block, so it can be a bugger to get off...

2) Big pan for your hydraulic fluid. I use one of the small mortar mixing tubs, it's about 2 foot by 3 foot, probably stands 8 or 9" tall. That will hold all the fluid as you drain it and it's got a small enough footprint so that you can slide it under the tractor.

Other than that, just take your time and things will go well. I'm at 70+ hours now, so I must not have messed too much stuff up! :D
 
/ 50hr. Service Torque Specs - ? (BX25) #9  
I say an well versed BX25 owner w/ a hand for making videos should make
a comprehensive BX25 50 Hour Service video! :thumbsup: It will get a LOTS of hits!
Anyone know anyone at Messicks? They seem to like to make videos,
a good oppurtunity it would be for a company, plugging themselves
repetitively throughout the video w/ signs in the background...
 
/ 50hr. Service Torque Specs - ? (BX25)
  • Thread Starter
#11  
I found the chart (see below), as Artisan and EagleTDL suggested.

The chart seems somewhat strangely laid out and confusing, at least to me. It isn't clear to me if the sizing designations in the chart at the top refer to the nominal diameter of the bolt (as would conventionally be the case for identifying metric hardware) or to the head of the bolt (as the bolt heads are identified below the the chart).

The bolt heads at the bottom of the page measure approximately 11mm,13mm,16mm,19mm,21mm from left to right.
Note that M8 is not included in the range of bolt heads, but is included in the chart at the top.

Also, the front axle drain/bleeder bolts on my machine are labeled "7" on the bolt head.

Does the tractor really include both SAE and metric hardware?!

I'll pull one of these bolts this weekend and see if I can come to any conclusions regarding the measurements.

I sent an email to Kubota on this question, will post any info I receive.
 

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/ 50hr. Service Torque Specs - ? (BX25) #13  
Not in my '04 BX23 manual. Only shows up to a 16mm bolt. The transmission hydraulic fluid plug is 17mm. Mine was leaking, so I replaced the washer/O-ring. Now the new one appears to have a very slow leak as well. I'm worried about over tightening it and stripping it. Not sure what to do!
 

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