460 mains
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From: Odessa USA
460 mains
Just had the oil changed on my '76 F150 460 for the first time. The guys told me that the front and rear mains, power steering, and oil pan are leaking. This engine is original and only has 51K miles. I can do the oil pan and the ps pump but what is involved in replacing the main seals? I've never done it before.
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460 mains
Dropping the oil pan cleaning off the old gasket material
and replacing the mains then installing the pan.
Dennis
Oh....Please Don't Ask Me Any Tough Questions As:
"I'm Saving Up MY Memory For When I Develop Alzheimer's"
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
and replacing the mains then installing the pan.
Dennis
Oh....Please Don't Ask Me Any Tough Questions As:
"I'm Saving Up MY Memory For When I Develop Alzheimer's"
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
Posting Guru
Joined: Jan 2000
Posts: 1,899
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From: Cullman Alabama
460 mains
[updated:LAST EDITED ON 18-Jan-02 AT 10:35 PM (EST)]
I'm just too tooo happy I had my 460 out in an engine stand when I put new Bearings and the Seals in.
The Rear main seal is a Two piece Neaprene Seal, and it's not easy to work with if you have the Crank in the way.
The old way of doing the Rope seals was to loosen the crank a good bit. Give your self an eighth inch to work with. Then, using a Little Tool you pushed the Rope seal up into the Hole while rotating the crank.
With this new seal you'd do something similar, but wouldn't have to work so hard.
Follow the instructions about trimming and sealing with the Blue RTV.
T'ant easy McGee!
The Bigger question is why is the seal leaking?
If your Truck sat out in the Severe -20 cold the Neoprene might have shrunk and haredened. No other problems then...But It could mean your bearings are worn. You'll need to use Plasti-guage to see what the Bearing Gap's are.
When you go to loosen and tighten those Main Bearing Bolts your gonna use your "Other" language skills. If you dont get at least one Hernia you aint working hard enough at it.
I feel genuinely Sorry for you if you tackle this project without a 1/2" Drive Air Hammer and a good 100 CFM Air compressor.
Be sure to check the Rod's too. You might get away with Std Bearings if there arent too many different sizes.
With the Crank out, you can take it to a machine shop to check it for Flat spots.
I'm just too tooo happy I had my 460 out in an engine stand when I put new Bearings and the Seals in.The Rear main seal is a Two piece Neaprene Seal, and it's not easy to work with if you have the Crank in the way.
The old way of doing the Rope seals was to loosen the crank a good bit. Give your self an eighth inch to work with. Then, using a Little Tool you pushed the Rope seal up into the Hole while rotating the crank.
With this new seal you'd do something similar, but wouldn't have to work so hard.
Follow the instructions about trimming and sealing with the Blue RTV.
T'ant easy McGee!
The Bigger question is why is the seal leaking?
If your Truck sat out in the Severe -20 cold the Neoprene might have shrunk and haredened. No other problems then...But It could mean your bearings are worn. You'll need to use Plasti-guage to see what the Bearing Gap's are.
When you go to loosen and tighten those Main Bearing Bolts your gonna use your "Other" language skills. If you dont get at least one Hernia you aint working hard enough at it.
I feel genuinely Sorry for you if you tackle this project without a 1/2" Drive Air Hammer and a good 100 CFM Air compressor.
Be sure to check the Rod's too. You might get away with Std Bearings if there arent too many different sizes.
With the Crank out, you can take it to a machine shop to check it for Flat spots.
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