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Engine Rear Support
In a Tiger E, the rear of the engine had an integral supporting frame. This frame was much the same for a HL 210 and HL 230 engine. The only significant difference was the position of the gears for the starter device.
This diagram shows the engine compartment, looking forwards. The supporting frame is drawn with some other parts of the engine. The starter gears are not shown.
The frame stands on two posts welded to the floor. It is fixed from below by bolts, accessible from outside the tank [2] .
The engine's crankshaft axis was nominally 370mm above the floor, on the center line of the hull. There were holes in the support frame to avoid bolts on the engine crankcase. The support was not actually bolted to the crankcase; it held the shock absorber ring, and thus the crankcase, in its large opening [3, see page 160] .
The engine support was made of dished sheet metal, about 5mm thick. This dagram shows the axis of the crankshaft and the vertical middle plane of the engine (the plane dividing the cylinder banks into halves) [1] .
The HL 230 engine was also fitted to the Pz Kw V 'Panther' tank, but in that tank it was fitted with different supports at the front and rear. Here is the rear engine support for a Panther [1] . Note that it places the engine lower in the hull, and 25mm off center.
Sources
[1] Workshop drawing 021 B 42581 : HL 230 external dimensions
[2] Survey of vehicle 250122, Bovington, by David Byrden
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