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Jul 21st, 2025 | | | | Joined: Sep 2009 Posts: 433 'Bolter | | 'Bolter Joined: Sep 2009 Posts: 433 | Do the four bolts on the oil pump require special washers ? One of mine was in two pieces when I removed it. The other washers seem to be pressed on and are flat washers.
Also there is a metal tag that was on one of the bolts and is stamped with the # 45. Would the # 45 possible refer 45 psi ?
Thanks in advance. Michael...
1954 Chevy 3104 3 Window Hydra-Matic in my family for over 60 Years
Once in a while you get shown the light in the strangest of places if you look at it right... "Scarlet Begonias" Grateful Dead 1974
| | | | | Joined: Feb 2004 Posts: 28,675 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,675 | I believe the 45 is a Melling part number. The lock washers really don't matter- - - -I'd choose to leave them off altogether, clean the bolt and pump housing threads thoroughly with carb cleaner, and use blue Loctite on them. As long as the end plate doesn't get loose and fall off, the way the bolts are retained doesn't matter.
I used to cross-drill the bolt heads on the race car oil pump cover bolts and safety wire them, jut to protect that $15K engine so the driver could over-rev it and scatter it like a hand grenade!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Dec 2008 Posts: 1,915 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,915 | Yes, "M-45" is the Melling replacement pump assembly for the 1955-* engines. | | | | | Joined: Sep 2009 Posts: 433 'Bolter | | 'Bolter Joined: Sep 2009 Posts: 433 |
1954 Chevy 3104 3 Window Hydra-Matic in my family for over 60 Years
Once in a while you get shown the light in the strangest of places if you look at it right... "Scarlet Begonias" Grateful Dead 1974
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