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Joined: Jan 2010
Posts: 58
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jan 2010
Posts: 58 |
Hi my parents pick up a 1935 Chevy master a few months ago it has a 207 motor mostly stock they been driveing it on the weekend a lot like 140+ miles over the weekends they took it out lasts weekend and it shut off on the freeway I went over to try and see what happened check the fuel I thought the fuel pump when out took off pump by hand work re install it took the valve cover off ask them to crank it over valve didn't move so it has to be cam gear but it was leaking more oil was also could has went wrong I have not took it apart yet Just wanted to know what to look out for
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
The most common engine failure on an old Chevrolet is the timing gears. Part is caused by the lack of oil to the gears. The oil is gravity fed from the front cam bearing to a milled slot on the back of the front mounting plate and drips out of a little nozzel above the timing gears. The slot fills with sludge and the gears run dry and then strip the teeth of of the fiber gear.
To replace the gears it will be necessary to remove the grille shell/radiator, balancer, timing gear cover, fuel pump, lifters (put them back in the same hole), and slide out the cam. A new gear needs to be pressed on and the steel crankshaft gear should also be replaced. The oil return holes on the bottom should be checked to see if they are full of sludge....see shop manual for front plate removal.....oh yes, the distributor needs to be removed also.
Gene Schneider
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Joined: Nov 2001
Posts: 29,863
Tech Advisor ChatMaster - 25,000
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Tech Advisor ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,863 |
The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
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Joined: Apr 2008
Posts: 1,194
ChatMaster - 1,000
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ChatMaster - 1,000
Joined: Apr 2008
Posts: 1,194 |
Any chance of bent valves or pushrods when the gear goes while driving?
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
Yes, that could happen also but not so common on a 207 engine.
Gene Schneider
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