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Old 12-30-2006, 04:16 PM   #1
pcmcobra
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wheel bearings...not sure

So I went down to the zone to get some new front wheel bearings and seals.
My option code in glovebox says j50(power brakes) I have the light duty brakes.
Anyway, the people at the zone could not tell from the computer which bearings I needed.
This is what comes up:

Please select one of the following:
With JB5, JD3, JD5 brake system
With JB1, JB3 brake system

I don't know how to decipher this to what I have...
Can someone help me please?
thx
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Old 12-30-2006, 05:41 PM   #2
boxrodz
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Re: wheel bearings...not sure

pcmcobra-
You probably have the JB3 system.

JB1 - 1" rotors with manual brakes (C-model)
JB3 - 1" rotors with vacuum-assist brakes (C-model)

JB5 - 1 1/4" rotors with vacuum-assist brakes (Any model)
JD3 - 1 1/4" rotors with hydroboost-assist brakes (Diesel engine)
JD5 - 1 1/4" rotors with hydroboost-assist brakes (Diesel engine)
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Last edited by boxrodz; 12-30-2006 at 05:42 PM.
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Old 12-30-2006, 06:30 PM   #3
pcmcobra
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Re: wheel bearings...not sure

thx
can you tell me where i can access that info?
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Old 12-31-2006, 02:28 AM   #4
SSC's76
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Re: wheel bearings...not sure

Going to Autozone was the first mistake.
If you have a C10 or 1500 series you need 2, BR3's inner and 2, BR5's outter SKF numbers or SA3 and SA6 Motor City. IIRC they cross to National numbers.
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Last edited by SSC's76; 12-31-2006 at 02:00 PM.
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Old 01-01-2007, 01:12 PM   #5
magnethead
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Re: wheel bearings...not sure

Quote:
Originally Posted by boxrodz View Post
pcmcobra-
You probably have the JB3 system.

JB1 - 1" rotors with manual brakes (C-model)
JB3 - 1" rotors with vacuum-assist brakes (C-model)

JB5 - 1 1/4" rotors with vacuum-assist brakes (Any model)
JD3 - 1 1/4" rotors with hydroboost-assist brakes (Diesel engine)
JD5 - 1 1/4" rotors with hydroboost-assist brakes (Diesel engine)
what about hydroboost on gas motors? We go to orielly's and tell them to basically skip the computer, but i'm sure somebody's going to wonder on the hydroboost gas mills...
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Old 01-01-2007, 01:29 PM   #6
784X4GUY
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Re: wheel bearings...not sure

I used to work at shucks, and the computer always asked crazy questions......Mike
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Old 01-02-2007, 05:46 PM   #7
boxrodz
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Re: wheel bearings...not sure

Quote:
Originally Posted by pcmcobra View Post
thx
can you tell me where i can access that info?
A good source would be the shop manual. Heims Inc as well as a few other places sells them, sometimes in discount if it is in reprint.
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1983 C10 SWB Fleetside

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You can argue with me but you can't argue with figures. Two half nothings is a whole nuthin...
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Old 01-02-2007, 05:55 PM   #8
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Re: wheel bearings...not sure

Quote:
Originally Posted by boxrodz View Post
pcmcobra-
You probably have the JB3 system.

JB1 - 1" rotors with manual brakes (C-model)
JB3 - 1" rotors with vacuum-assist brakes (C-model)

JB5 - 1 1/4" rotors with vacuum-assist brakes (Any model)
JD3 - 1 1/4" rotors with hydroboost-assist brakes (Diesel engine)
JD5 - 1 1/4" rotors with hydroboost-assist brakes (Diesel engine)
Quote:
Originally Posted by magnethead View Post
what about hydroboost on gas motors? We go to orielly's and tell them to basically skip the computer, but i'm sure somebody's going to wonder on the hydroboost gas mills...
Basically, larger trucks with larger discs and drums:

JB8 - 12 1/2" x 1 1/2" rotors with hydroboost-assist brakes (Any Model)
JF9 - 14 1/4" x 1 1/2" rotors with hydroboost-assist brakes (Any Model)
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boxRODz
1983 C10 SWB Fleetside

When two halves is gone, there's nuthin left. Two nothings is nuthin. That's mathematics son.
You can argue with me but you can't argue with figures. Two half nothings is a whole nuthin...
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