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) |
stephestrad |
Dec 2 2015, 01:13 AM
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#2
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Newbie Group: Members Posts: 18 Joined: 28-February 13 From: Berkeley, CA Member No.: 15,596 Region Association: Northern California |
Y'all are the best. (IMG:style_emoticons/default/biggrin.gif)
I did not know that the housing could be removed without being split. That was a revelation. I removed the impeller, spotted those four bolts, and moments later had the housing off! Ah, sweet success! The two bolts are still lodged and I would like to remove them in order to clean the surprisingly thick build-up out of the housing. To that end, I have an impact screwdriver arriving tomorrow -- with any luck that will be the answer! I think/hope it will also be easier to apply force now that I can lay the housing flat and brace it. I'm going to soak it overnight in PB Blaster. Tomorrow I'll heat it for much longer, add MORE Blaster, try the tighten/loosen manual method, then IMPACT away! Thanks so much! |
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