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Re: For Bf 109 experts: oil filler hatch
Sorry to come into this so late! There are complications with the fitting of the different 36l/50l engine oil tanks. The simple difference of the capacity is not a real issue but, the larger tank also gave greater "settling" time and air space to assist de-foaming. The access panel for replenishment also needs to align with the refill point. However, one of the important differences that should be understood is the position of the oil thermostat. The smaller (horseshoe) tank would normally have the oil thermostatic valve fitted in the gap at the top of the oil tank. The larger tank had no space at the top for the valve and, it was generally fitted in a revised oil circuit, near the oil cooler, under the engine. These modifications could also be associated with the installation of the Olschluder (centrifuge-defoamer). Cheers
SM
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