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SECTION 46: ENGINE MOUNT & LANDING GEAR: Difference between revisions
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SECTION 46: ENGINE MOUNT & LANDING GEAR (view source)
Revision as of 16:14, 29 April 2023
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*Use a 3/16 drill and run through the 6 engine mount holes. Ensure the 3/16 dowels go in. | *Use a 3/16 drill and run through the 6 engine mount holes. Ensure the 3/16 dowels go in. | ||
*Mount the engine mount. Some of the dowels will be pushed back, try gently to push them into the firewall holes using light taps. | *Mount the engine mount. Some of the dowels will be pushed back, try gently to push them into the firewall holes using light taps. | ||
*Remove one dowel at a time, drill up the hole using modified Nylon spacers to center the drill, and secure with a bolt. The drill steps are:<br>[[File:2023-04-27 19-52-27.jpg|400x400px]] | *Remove one dowel at a time (using a punch from the inside, then grab it with nose pliers), drill up the hole using modified Nylon spacers to center the drill, and secure with a bolt. The drill steps are:<br>[[File:2023-04-27 19-52-27.jpg|400x400px]] | ||
** 3/16 (0.1875) original hole | ** 3/16 (0.1875) original hole | ||
** 5/8 (0.3125) Note: a 1/4 drill bit will bind / break off, better to do larger steps | ** 5/8 (0.3125) Note: a 1/4 drill bit will bind / break off, better to do larger steps | ||
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** 3/8 reamer (0.375), e.g. [https://www.amazon.com/dp/B076DMH4BF at Amazon] | ** 3/8 reamer (0.375), e.g. [https://www.amazon.com/dp/B076DMH4BF at Amazon] | ||
* Note: Don't waste the single-use metal stop nuts yet, instead use AN6 castle nuts or 3/8-24 hardware store nuts for the drill process. | * Note: Don't waste the single-use metal stop nuts yet, instead use AN6 castle nuts or 3/8-24 hardware store nuts for the drill process. | ||
* Note: If you have issues getting the fuel hose out of the hole, use a hook or awl and pierce the hose and pull out. If you have issues getting the nylon bushings out, consider using a screw extractor | * Note: Some of the 1/2 inch attachment tubes of the engine mount have reduced diameter spots inside from welding. The bushings may bind there. You might have to grind the bushing. | ||
* Note: If you have issues getting the fuel hose out of the hole, use a hook or awl and pierce the hose and pull out. If you have issues getting the nylon bushings out, consider using a screw extractor, e.g. [https://www.amazon.com/gp/product/B09W5PW588 Screw Extractor Set] | |||
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*Don't forget to grease the bushings on their outside. | *Don't forget to grease the bushings on their outside. | ||
* Tighten to castle nuts to spec, the bushing itself must not rotate. Check that the parts riding on the outside of the bushings still rotate after torquing the castle nuts. If not, see figure 1, it says to remove some of the powder coating if necessary. | * Tighten to castle nuts to spec, the bushing itself must not rotate. Check that the parts riding on the outside of the bushings still rotate after torquing the castle nuts. If not, see figure 1, it says to remove some of the powder coating if necessary. | ||