B7 100 HST pto grinding.

BUCKET

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Equipment
KUBOTA B7 100 HST 4x4 , 5 foot mid mount mower .
Nov 26, 2014
7
0
0
GYMPIE , QLD , AUSTRALIA
First of all , greetings from downunder .
After searching this forum I still can't quite find the answer to my Kubota's problem.
I bought my Kubota B7 100 HST 4X4 secondhand.
Since I have had it , it has always had a very slight grinding when putting the pto in for the mid mount mower.
Recently I hit a small stump and the tractor stopped , I started it again but now I can't engage the pto for the mid mount mower , there is a severe grinding and it won't engage .
I have tried dropping the revs right down as suggested on this site , but still the same.
I can engage the rear pto with no grinding , but there is nothing connected to it.
I have greased the nipple for the throwout bearing.
If I engage the pto before starting the engine all is good , but I'm guessing this is not advisable.
Another thing , when the pto is engaged and engine running , if I push the clutch pedal in , the pto stays engaged , should it disengage ?
Your help would be appreciated,
Cheers,
Greg
 

North Idaho Wolfman

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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
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Yes before you engage the PTO the clutch pedal should be down, if the tractor still moves with the clutch in then you have a locked up or frozen clutch disk, and need to break it free, or split the tractor and repair/replace it. ;)
 

BUCKET

New member

Equipment
KUBOTA B7 100 HST 4x4 , 5 foot mid mount mower .
Nov 26, 2014
7
0
0
GYMPIE , QLD , AUSTRALIA
Well it looks like the clutch disk is frozen.
The tractor still moves with the clutch pedal in.
I tried a couple of methods mentioned on this site to free it up.
Tied it to a big gum tree as well.
No go.
Looks like i will have to split it when winter gets here.
 

phaser

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B7100HST 4x4, FEL, field mower
Aug 6, 2013
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Oregon
What causes a clutch disk to become frozen?

Are there steps that be taken to prevent this?

.
 

North Idaho Wolfman

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Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
30,538
6,594
113
Sandpoint, ID
What causes a clutch disk to become frozen?

Are there steps that be taken to prevent this?

.
RUST from condensation on the flywheel and pressure plate!
Use a block of wood and prop the clutch pedal open to keep it from sticking.;)
 

BUCKET

New member

Equipment
KUBOTA B7 100 HST 4x4 , 5 foot mid mount mower .
Nov 26, 2014
7
0
0
GYMPIE , QLD , AUSTRALIA
Well I split the tractor and the clutch disk was shattered and a spring was stuck behind the flywheel.
The disk was also stuck on the spline.
Does anyone know of a cross reference for a aftermarket disk or if some other vehicle uses the same disk ?
The Kubota brand one is very expensive down here in Australia .
 

BadDog

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B7100D TL and B2150D TLB
Jun 5, 2013
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Phoenix, AZ
I recently (in the last weeks) had to replace an expensive 2 stage clutch. Local heavy equipment clutch and brake rebuild shop initially said they could rebuild and provide both setup and machine services far cheaper than I could buy a "set" off ebay (few hundred USD rather than ~$600 for just parts). Upon inspection they determined rebuild was not an option (partially due to overheated diaphragm pressure plate), but they were able to source new parts along with machine and setup (a PIA on it's own) for about the same as ebay parts. The B7100 has a simple single stage non-diaphragm pressure plate, so your local clutch/break equipment service shop may be able to rebuild along with providing flywheel surfacing for a reasonable price.
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
30,538
6,594
113
Sandpoint, ID
Go to EBay.com.au and type in B7100 clutch, compare those prices, looks like they all are from the US.
 

BUCKET

New member

Equipment
KUBOTA B7 100 HST 4x4 , 5 foot mid mount mower .
Nov 26, 2014
7
0
0
GYMPIE , QLD , AUSTRALIA
The pressure plate looks like it is alright.
I did see the discs on ebay , but with the low Aussie dollar and postage it still works out to about $100 lower than the price I was quoted ($235) :eek:
As my paddock is getting out of control I need to get the Kubota going real soon .
Just thought there might be a cross reference .
They also want $140 for 20 litres of Kubota UDT :eek: