The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1947 - 1959 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-07-2018, 10:59 PM   #1
Darthintel
Registered User
 
Darthintel's Avatar
 
Join Date: Jun 2018
Location: Beaverton, Oregon
Posts: 30
Axle Seal / Wheel Bearings

I bought a 1954 Chev 3100 truck and started working on the rear brakes.
After removal of the drums I could see that it had leaking axle seals.
I ordered all new brake hardware (brake shoes, springs, wheel cylinders, master cylinder, rear axle bearings and grease seals).

I removed the brake hardware and pulled the axle. I then pulled the oil seal and compared to the new one...something is wrong. The bearings and axle seals I bought are too small.
I'm thinking I have a 1 ton axle under my truck based on the fact that I can count 10 leaf springs.

I took the following measurements:
Axle tube opening:
70.33mm / 2.76"

Old oil seal:
70.39mm / 2.77"

New oil seal:
61.3mm / 2.41"
Part number National 450666

New bearing:
61.25mm / 2.4mm
Part number National R1500EL

Since the parts I ordered for a 1/2 ton truck are too small, I'm thinking I have a heavier duty axle under the truck but need help identifying.
The 10 leafs in the springs are a clue. Is this a 1 ton axle?
It does have the enclosed drive line.

Thanks in advance for help.
Attached Images
     
Darthintel is offline   Reply With Quote
Old 11-07-2018, 11:36 PM   #2
Darthintel
Registered User
 
Darthintel's Avatar
 
Join Date: Jun 2018
Location: Beaverton, Oregon
Posts: 30
Re: Axle Seal / Wheel Bearings

I looked up a 1955 chev 3100 truck, and the National wheel bearing is RW507ER.
Outer diameter 2.8346". May fit my axle tube of 2.767". (press fit)
This may be the one ....

The vehicle ID indicates H54 ........so not a 1955. Who knows.

Any thoughts?
Darthintel is offline   Reply With Quote
Old 11-08-2018, 01:03 AM   #3
Darthintel
Registered User
 
Darthintel's Avatar
 
Join Date: Jun 2018
Location: Beaverton, Oregon
Posts: 30
Re: Axle Seal / Wheel Bearings

Below are pictures if the "National" oil seal I pulled.
I haven't found any oil seal with an OD of ~2.8".
All the oil seals for 1954 and 1955 trucks are 2.41" that I have found.
Attached Images
   
Darthintel is offline   Reply With Quote
Old 11-08-2018, 01:36 AM   #4
Darthintel
Registered User
 
Darthintel's Avatar
 
Join Date: Jun 2018
Location: Beaverton, Oregon
Posts: 30
Re: Axle Seal / Wheel Bearings

After doing a lot of research, I've been able to come to the conclusion that there's 2 different sizes of axle bearings and seals for these trucks from many suppliers.

One size is 2.41" OD. The other size is 2.78" OD.

I just happened to purchase the 2.41" OD parts before I had the axle and seal pulled. My axle tube requires the 2.78" OD parts.

This made thing very frustrating, but - it's not a required daily driver and it can sit and wait for parts.
I can find many other things to work on

Hopefully this will help others in the future.
Darthintel is offline   Reply With Quote
Old 11-08-2018, 01:59 AM   #5
MiraclePieCo
Registered User
 
Join Date: Sep 2014
Location: OR
Posts: 773
Re: Axle Seal / Wheel Bearings

Thanks for following up. You had a 50/50 chance of getting the right ones, funny how that seldom works out.
__________________
1951 Chevy Panel Truck
MiraclePieCo is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:01 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com