How to start a caterpillar d4-7u pony motor?
How to start a caterpillar d4-7u pony motor? The oil pressure gauge will register oil pressure and the fuel pressure gauge (on the front left side of the engine) will go to the green. Now start the main engine by simply opening the throttle. Fill the ;ony motor gas tank with regularf petrol only. When did the Caterpillar D4 7U series start? The D4 actually started around 1937 with a G4 Series then evolved into the 7U Series of the 1940s and 1950s. The Caterpillar Company continued to build new D4s right up till now and they are a great...