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bobcat 743 water pump pulley

Kalashnikov

Kalashnikov

Member
Joined
May 29, 2013
Messages
7
Location
Taxachusetts
The water pump pulley sheared off 3 bolts and tore up 3 of the 4 mounting holes the other day. Water pump spins fine and alternator spins fine. I had just adjusted the belt a couple hours before this happened after having the alternator loosen up and having the belt come off. I have not been able to find another pulley. It's got the V1702 Kubota in it and is an early style machine from the late 80s or early 90s I believe. 3600hrs approximately. I'd rather get a new pulley before fixing the old one so I don't have to worry about having it out of round and bent chewing up belt or pumps.
 
kshansen

kshansen

Senior Member
Joined
Mar 11, 2012
Messages
11,160
Location
Central New York, USA
Occupation
Retired Mechanic in Stone Quarry
Kalashnikov said:
The water pump pulley sheared off 3 bolts and tore up 3 of the 4 mounting holes the other day. Water pump spins fine and alternator spins fine. I had just adjusted the belt a couple hours before this happened after having the alternator loosen up and having the belt come off. I have not been able to find another pulley. It's got the V1702 Kubota in it and is an early style machine from the late 80s or early 90s I believe. 3600hrs approximately. I'd rather get a new pulley before fixing the old one so I don't have to worry about having it out of round and bent chewing up belt or pumps.
Click to expand...

Do you know WHY this happened? Does not seem like a "normal" failure. I'm wondering because we have a sister to yours.
 
Kalashnikov

Kalashnikov

Member
Joined
May 29, 2013
Messages
7
Location
Taxachusetts
I haven't found a reason why yet. The only thing that would come to mind are the bolts being loose or the belt being too tight. Considering what's still threaded in the pump flange is still tight, I don't think loose bolts on the puey caused it. I didn't go crazy on the belt either and it's not the first time I've adjusted it so I can't see that being the cause either.
 
B

Bobcatdan

Well-Known Member
Joined
May 15, 2012
Messages
241
Location
wisconsin
I've had a couple break on new skids with Kubota V3300. No go reason why. I've replaced them with no further problems. That pulley should be easy to fine.
 
Kalashnikov

Kalashnikov

Member
Joined
May 29, 2013
Messages
7
Location
Taxachusetts
I just ordered one from Bobcat $23.

Thanks for the info Bobcatdan. Seems like a strange thing to happen but I'm glad it's just "normal wear."
 
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