Description: Caterpillar D8-8R Built in Illinois USA in 1941 then shipped over to England to join 79th armoured Div 819 Dozer Squadron. This actual machine took part in Normandy and D-Day events. Filmed on 19th July 2008 at Barton under Needwood Steam Rally ( near Lichfield Staffs ) What you are watching is the start process needed before the Big Cats diesel engine can be started. The petrol driven starter motor ( donkey engine ) is fired up first. This generates heat which inturn is used to warm up the big diesel engine prior to starting. The action of the starter motor also builds up the oil pressure in the big diesel engine. When the required oil pressure has been reached you will see the guy activate the start mechanism on the diesel engine. Once she has fired up the primary petrol engine is shut down leaving the Big Cat Diesel engine purring away....Sweet
Caterpillar - D8 - Diesel - Cold Start - Cat - Tractor - WW2 - Normandy - Download MP3 music or MP4 video:
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In another day or two my dad will have this pushed out.
Cranking over the pony starter and lugging the big diesel to life for the first time since about August last year, then taking her out for a quick stroll. This Cat originally belonged to the Rocky View County shops for use when large objects needed a little tractive persuasion. Pioneer Acres Museum, Irricana, Alberta.
D-8 Caterpillar Tractor operating, June 2011. 1969? D-8 goes for a ride around the yard. The D-8 has a 1264 cubic inch in-line 6 cylinder diesel rated 270 HP @ 1200 RPM. Doesn't seem like a lot of HP but rememeber a car engine has to rev to 5000 RPM to make that power. It is also geared for heavy pushing an pulling; if you have the right lever you can move the world. The small 2 cylinder engine is the pony engine which is used to start the diesel, through direct gearing. After the pony engine starts, you see the operator throw in the starter gear lever (a little grinding is heard) which gets the diesel turning. The diesel has a compression release which you see the operator throw over to close after the diesel engine is spining. The drive system is via torque covertor through a 3 speed transmission, steering clutches and bull gears. The steering works by the operator pulling back on one of the two levers directly in front him (right to turn right left to turn left) to de-clutch the steering clutch, and then also pressing thecorresponding brake pedal the lock one track. The opposite track then pushes the tractor (or pulls if in reverse) one direction or another. Both pedals can be applied at once for braking. Sorry about the shaky video: we're just acouple of mechanics having some fun. Hope you enjoy.
Camp Creek Thresher show, July 2009 Wavery, NE. A friend of ours starting his 1945 (I think), Cat D8 for the antique parade at the show. Pony motor has a broken kill switch, so he puts his hand over the intake to choke it off.
JR on D8 at the Santa Margarita Show
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