The Ford Barn

FrankWest · 12-15-2015, 12:28 PM

There seems to be lack of availability of Model B water pump rebuilding kits?
Discontinued? Mac's Sells a complete pump but I don't think it is for a 1933 model B, but a 1932 model B because the neck does not slant enough.
Has anyone rebuilt a model B pump.

Below is pictured the MAC's model B pump...I think 1932 is shown.

Bob C · 12-15-2015, 12:32 PM

Renner's Corner http://www.rennerscorner.com/water-pump-rebuilding.html

Bob

Bruce Lancaster · 12-15-2015, 12:40 PM

Also, if you have a good casting and a good impeller you can use the readily available Model A rebuilding parts...you would push the long Model A shaft through your impeller to correct length and play then pin it at that length and saw off the overhang. Bearings and stuff fit.

FrankWest · 12-15-2015, 12:56 PM

Side question? How is the pulley attached to the end of the pump?

Bob C · 12-15-2015, 01:02 PM

Quote:

Originally Posted by FrankWest

Side question? How is the pulley attached to the end of the pump?

Like the rear axle hub. Taper, key and nut.

Bob

Bruce Lancaster · 12-15-2015, 01:13 PM

Sponsored Links (Register now to hide all advertisements)

Traditional way to remove...start a nut onto the end of the shaft...if you can get a coupling nut that is great. Screw a bolt into the nut firmly against the end of the shaft. Now you can smack it with a hammer without damage.

jim1932 · 12-15-2015, 02:23 PM

Quote:

Originally Posted by Bob C

Renner's Corner http://www.rennerscorner.com/water-pump-rebuilding.html

Bob

I agree, call Renner

DavidG · 12-15-2015, 06:06 PM

Apart from the shorter pump shaft, be careful as the front bearing and grease seal arrangement at the front of the pump is different on the shortened '33-'34 versions than on the '32 and Model A versions. It is highly unlikely that the sellers of rebuilding kits are aware of that difference and what they are selling is for Model As and '32 pumps.

Bob C · 12-15-2015, 06:54 PM

David, what is the difference in the bearing and seal? I looked in the
1937 parts book and it shows the same 28-34, is this a mistake?

Bob

ursus · 12-15-2015, 08:02 PM

I have rebuilt the '32 and '33-'34 versions using NOS or NORS rebuilding kits and never noticed a difference on the front bearing and seal parts. The older Thompson kits had the bearing and seal parts in a small box and were identical in kits for each version.

DavidG · 12-15-2015, 11:17 PM

There were two different versions of the felt retainers for the front bearing, B-8540-A and B-8540-B. The latter is shallower than the former and while the former worked fine in the '32 pumps that I've rebuilt, they caused binding in the '33-'34 pumps I've restored (to the extent that even with the leverage of the fan attached the shaft could barely be rotated). Evidently in the rebuild kits only the B-suffix version was supplied.

ursus · 12-16-2015, 03:29 PM

Interesting information. I wonder if the went to the later version for all 32-34 in the rebuild kits?

12-15-2015, 12:32 PM	#2
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,757	Re: Model B water pump rebuilding Renner's Corner http://www.rennerscorner.com/water-pump-rebuilding.html Bob

12-15-2015, 12:40 PM	#3
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: Model B water pump rebuilding Also, if you have a good casting and a good impeller you can use the readily available Model A rebuilding parts...you would push the long Model A shaft through your impeller to correct length and play then pin it at that length and saw off the overhang. Bearings and stuff fit.

12-15-2015, 12:56 PM	#4
FrankWest Senior Member Join Date: Sep 2013 Posts: 3,005	Re: Model B water pump rebuilding Side question? How is the pulley attached to the end of the pump?

12-15-2015, 01:13 PM	#6
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: Model B water pump rebuilding Sponsored Links (Register now to hide all advertisements) Traditional way to remove...start a nut onto the end of the shaft...if you can get a coupling nut that is great. Screw a bolt into the nut firmly against the end of the shaft. Now you can smack it with a hammer without damage.

12-15-2015, 06:06 PM	#8
DavidG Senior Member Join Date: May 2010 Location: southeastern Michigan Posts: 10,104	Re: Model B water pump rebuilding Apart from the shorter pump shaft, be careful as the front bearing and grease seal arrangement at the front of the pump is different on the shortened '33-'34 versions than on the '32 and Model A versions. It is highly unlikely that the sellers of rebuilding kits are aware of that difference and what they are selling is for Model As and '32 pumps.

12-15-2015, 06:54 PM	#9
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,757	Re: Model B water pump rebuilding David, what is the difference in the bearing and seal? I looked in the 1937 parts book and it shows the same 28-34, is this a mistake? Bob

12-15-2015, 08:02 PM	#10
ursus Senior Member Join Date: May 2010 Location: Oregon Posts: 1,375	Re: Model B water pump rebuilding I have rebuilt the '32 and '33-'34 versions using NOS or NORS rebuilding kits and never noticed a difference on the front bearing and seal parts. The older Thompson kits had the bearing and seal parts in a small box and were identical in kits for each version.

12-15-2015, 11:17 PM	#11
DavidG Senior Member Join Date: May 2010 Location: southeastern Michigan Posts: 10,104	Re: Model B water pump rebuilding There were two different versions of the felt retainers for the front bearing, B-8540-A and B-8540-B. The latter is shallower than the former and while the former worked fine in the '32 pumps that I've rebuilt, they caused binding in the '33-'34 pumps I've restored (to the extent that even with the leverage of the fan attached the shaft could barely be rotated). Evidently in the rebuild kits only the B-suffix version was supplied.

12-16-2015, 03:29 PM	#12
ursus Senior Member Join Date: May 2010 Location: Oregon Posts: 1,375	Re: Model B water pump rebuilding Interesting information. I wonder if the went to the later version for all 32-34 in the rebuild kits?