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Question:

Where do the bulldozer blades get their power from? Do they consume petrol from the bulldozer itself?

Where do the bulldozer blades get their power from? Do they consume petrol from the bulldozer itself?

Answer:

bulldozers use diesel not petrol. The blade is lifted and lowered by hydraulic rams which as already said is powered by a hydraulic pump which is powered by the diesel engine
the blade on a bulldozer is hydraulically controlled, the power for the rams comes from a pump that runs off the engine.

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