Caterpillar D2 D4 detailed starting sequence

This is a pretty good show for average temperatures: When the temp gets below freezing, the colder it is the longer it takes, gotta let the pony cooling water circulate for a while, then go to full on the compression release and get her spinning, when it turns the main handily you try taking the compression release to half (or am I confusing the bigger machines, do the D2 and D4 halve half?) then again when the pony

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