Impeller Housing Disassembly: 2 Frozen Screws |
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Impeller Housing Disassembly: 2 Frozen Screws |
stephestrad |
Dec 1 2015, 01:13 AM
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#1
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Newbie Group: Members Posts: 18 Joined: 28-February 13 From: Berkeley, CA Member No.: 15,596 Region Association: Northern California |
I'm attempting my first partial engine disassembly and I have run into a stumbling block: Two of the screws in the front of the impeller housing are solidly frozen. Additionally, the slots of the heads are starting to strip out.
Removal attempts so far: 1. Soaked them overnight in WD-40. 2. Several raps with a hammer. (Normal hammer, struck the screwdriver handle, not the screw directly.) 3. Heated them with a propane torch (3 or 4 times, 30-60 seconds each). - I tried with and without squirts of water post-heating. - Before and after the heat, sprayed with PB Blaster. - Was the heat a bad idea, given the magnesium housing? The screws are still stubbornly in place. For what it's worth, the engine is horizontal, so the WD-40 and BP Blaster don't have the benefit of gravity to helping pull them into the threads. Help!!! (IMG:style_emoticons/default/sad.gif) |
Dave_Darling |
Dec 2 2015, 10:53 AM
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#2
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
It also helps if you have the correct size screwdriver. The largest one that my local Sears sold was the only one that would fit the slot heads snugly. Using smaller heads made it easier to strip the slots out.
I really hate those slot-head screws. I replaced them with Allen-head screws when I tore my engine down. --DD |
stephestrad |
Dec 2 2015, 12:59 PM
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#3
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Newbie Group: Members Posts: 18 Joined: 28-February 13 From: Berkeley, CA Member No.: 15,596 Region Association: Northern California |
It also helps if you have the correct size screwdriver. The largest one that my local Sears sold was the only one that would fit the slot heads snugly. Using smaller heads made it easier to strip the slots out. I really hate those slot-head screws. I replaced them with Allen-head screws when I tore my engine down. --DD I hear you. I was using a large, long-handled flat head screwdriver that fit the slot solidly. It's just that the screw didn't want to budge and I could only apply so much force. It probably would have been better with the impact screwdriver first time around. It's a good reminder though, and I'll make sure I have a large bit before I start Operation Impact. Switching to Allen-heads is a great idea. I'll check to see if Parts Heaven has any in stock on Saturday when I pick up my oil cooler. If not, maybe Pelican has them. - Stephen |
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