So after less than 3000 miles, another bolt broke on the oil pump. I'm not sure if its the one I replaced or another bolt. The first clue was a washer stuck to the drain plug during an oil change.
How long do these bolts last before they fatigue and break?
Another Oil Pump Bolt Failure
Another Oil Pump Bolt Failure
Kimball
1979 712M
1979 712M
Never really heard of that problem before... more likely they have been "overstressed" by the mechanic during a rebuild or pump replacement.
Peter
1974, 712 6X6 Pinzgauer
1983, 710-1.6 4X4 Pinzgauer
1997, 718 6X6 Pinzgauer (in pieces)
1971, 700 Haflinger
1974, 703 LWB Haflinger
2001, Range Rover
http://www.ozpinz.com
1974, 712 6X6 Pinzgauer
1983, 710-1.6 4X4 Pinzgauer
1997, 718 6X6 Pinzgauer (in pieces)
1971, 700 Haflinger
1974, 703 LWB Haflinger
2001, Range Rover
http://www.ozpinz.com
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Update: Much to my surprise, there were no broken bolts. However, the two bolts closest to the drive gear had backed out and were lying in the bottom of the oil pan.
I don't recall the specifics of when I reinstalled the pump, but I might have re-used the original lock washers on these two bolts. I plan on getting two new lock washers and re-installing. I wasn't planning on using any thread locking compound. Opinions?
I don't recall the specifics of when I reinstalled the pump, but I might have re-used the original lock washers on these two bolts. I plan on getting two new lock washers and re-installing. I wasn't planning on using any thread locking compound. Opinions?
Kimball
1979 712M
1979 712M
Update: I got all the parts and tools assembled to heli-coil the holes and safety wire the bolts.
The new issue...the holes are too close the the oil pan skirt. The drill chuck and body interfere with the skirt so that you can't drill straight. I'm now looking for a drill extension and a tap extension.
The new issue...the holes are too close the the oil pan skirt. The drill chuck and body interfere with the skirt so that you can't drill straight. I'm now looking for a drill extension and a tap extension.
Kimball
1979 712M
1979 712M