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154 1301 09 Five Speed Overhaul Part 2 Nv3550 Vent

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Even if you aren’t rebuilding your transmission, you will want to know this. The vent for the NV3550 is right on top of the transmission. So if you get into the wet stuff frequently, you might want to change it. If you aren’t pulling the transmission, it is accessible through the inspection cover in the floor. Unscrew it and you can replace it with an NPT barb fitting to run a hose to a higher location.