Kubota Alternator needed, 15531-64017 or equivalent

[jas67]

I can't win with this G1800. The fuel pump failed last week. During the first mowing after replacing that, now the alternator is seized up

List price is a whopping $202 !!!

Any pointers on where to get a rebuilt, or even a used one for a bit less?

I found one site that lists this as the same alternator for the following:
Tractors:
B20 D950AT 20HP Diesel (90-ON)
B20TL D950AT 20HP (90-ON)
F2000 D950-FM 20HP Diesel (86-94)
G1800 D662 16HP Diesel (89-95)
G1800S D662 16HP Diesel (89-95)
G1900 D722 18HP Diesel (89-95)
G2000 WG750-G 21HP Gas (89-95)
G3200 Z400 10HP Diesel (83-90)
G4200H Z430 12HP Diesel (84-90)
G5200H D600 14HP Diesel (84-90)
G6200H D640 16HP Diesel (86-90)
GF1800E D722 18HP Diesel (03-bk)
GF1800R D722 18HP Diesel (03-bk)
T1600H Z482 13.5HP Gas (90-95)
Excavators:
KH35 D850BH 13.7HP Diesel (85-on)
KH41 D950 17.8HP Diesel (88-on)
KH61 D950BH 22.2HP Diesel (88-on)
Mowers:
ZD18 D722 18HP Diesel (03-bk)
ZD21 D782 21HP Diesel (03-bk)
ZD28 D1105 28HP Diesel (03-bk)

From Messick's website:
Brand: Kubota
Replaces: 15531-64012, 15531-64013, 15531-64014, 15531-64015, 15531-64016
In Stock: No
Stock Quantity: Availabe in 3-5 business days
Price: $202.00ea.

This Part Fits at least the following tractors.
BX2230 BX1830 B20 B2150HSD B8200 B9200D
B1550 B1750 B6200 B7200 G1800 G1900
G2000 G4200 G5200 G6200 GF1800 F2000
B7410 BX1500 BX1800 BX2200 BX22 BX23
GR2100 B1550HST B1750HST B2150 T1600H B1550D
B5200D B6200HST B7200HST B8200HST B9200HST G3200
T1600H-G

Thanks in advanced!
jas67

 

[hammer1995]

Have you tried a starter repair shop in your area? The one around here rebuilds starters and alternators.

 

[texbaylea]

Have you taken it apart? Sounds like there is something mechanical preventing it from rotating or a bad bearing and a replacement bearing/s should not be hard to find. The pullet is probably just keyed to the shaft so removing the nut would let it come off.

I have never found repairing a starter or alternator difficult or costly unless the problem is the armature or the coils.

Take a look at it. You can not be worse off. Be sure to go to a shop that specializes in bearings and seals. All the help can do in an auto parts store can do is look things up in whatever catalogs they have. Sometimes I doubt that ability.

Vernon

 

[jas67]

Yes, actually, I have taken it apart. There are a total of three sealed-bearing assemblies. I have already ordered a set ($4 ea, so only $12).

I got the one out, but the other two are going to be tough. This particular alternator assy has a rotating cup-shaped rotor with permanent magnets on its interior rotating around a stationary armature in the center. The "cup" has a shaft pressed into its center. The other two bearing assemblies are on this shaft, down inside the cup. I'm going to need some kind of small puller to get them off the shaft. At least on of these bearings is frozen, so I'm sure the inner race has probably spun on the shaft, so it might be friction-welded fast.

In the meantime, another TBN member has an alternator available that he pulled for upgrade, so I'm buying that from him. If I can get these bearings out, I'll rebuild it for a spare.

 

[texbaylea]

jas67

About how "deep" is that cup? Pulling small bearings can be tough. If you can not pull the frozen bearing maybe you could cut the races using a Dremel tool and a rotary rock. Usually, if you can break the bearing down and get to the inner race, cutting will let you pry it loose.

Good Luck

Vernon

 

[jas67]

I was able to rebuild my alternator for $11.85 + shipping.
See this thread:
Kubota Alternator Rebuild (covers very many models) - TractorByNet.com