Oil Pump Problems
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New User
Joined: Jun 2004
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Oil Pump Problems
My friend has a 1962 F100 and in the last 6 months it has torn the gearing off the distributor shaft 3 times. The first time it happened he had a 302 Windsor in it and after numerous other problems, decided to change over to a 351 Cleveland, and since then he's had it seize the oil pump and tear the gearing off the dizzy shaft another 2 times in less than 6 weeks. He has replaced the distributor and oil pump each time and tonight (actually wee hours of the morning) it's done it again on the way home from work 
and he's not a happy camper and I'm not either after a 2am phone call LOL
Any ideas on what could be causing this????
and he's not a happy camper and I'm not either after a 2am phone call LOLAny ideas on what could be causing this????
Elder User
Joined: Jun 2003
Posts: 886
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From: Houston/Hope BC
Extremely bad luck, get a new friend. Just kidding. 
HV pumps?
Blueprint the pump next time around and use a std pump.
Bad relief valves?
Where are the engines coming from? are they stock? Where are the new gears that are being put in coming from? Are they meshing properly? Can you determine if the failure is cyclic or catasrophic (does the gear wear out then explode or just explode all at once?) GL
HV pumps?
Blueprint the pump next time around and use a std pump.
Bad relief valves?
Where are the engines coming from? are they stock? Where are the new gears that are being put in coming from? Are they meshing properly? Can you determine if the failure is cyclic or catasrophic (does the gear wear out then explode or just explode all at once?) GL
Laughing Gas
Joined: Oct 2001
Posts: 957
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From: Winchendon MA
Any time you strip the gear you have to pull the oil pan replace the pick up and pull all the main and rod bearings and flush the whole oil system! you should also pull the cam and flush the cam bearings. A tiny particale is all it takes.
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In answer as to whether the gears are wearing out ...brand new gears both times with this motor and it's happened twice in 6 weeks???? The motor had only done 10,000km since a complete rebuild when purchased, and it hasn't even been in this truck for 3 months yet. There isn't any warning of impending failure either...it'll be running perfectly and then it will just stall and that's the end of it.....parked again until it gets towed home to be repaired YET again.
Each time it's happened he has replaced the pickup, etc and fully flushed the system, and it has us stumped as to what's causing the problem. He has even had it to 3 different mechanics and still no joy.
I'll pass on to him the possibility of bad relief valves, as well as taking a good look at the cam.
Each time it's happened he has replaced the pickup, etc and fully flushed the system, and it has us stumped as to what's causing the problem. He has even had it to 3 different mechanics and still no joy.
I'll pass on to him the possibility of bad relief valves, as well as taking a good look at the cam.
Elder User
Joined: Jun 2003
Posts: 886
Likes: 1
From: Houston/Hope BC
Do you still have the old pumps? Take them apart and see if something is getting sucked up into them and causing them to jam. You might also put some blue on the gears and run them by hand and observe the mesh pattern. GL
