[jim sewell]

Jarred
It appears from looking at the picture of the derrick lifting the engine that it operated from with in the cab of the truck.
If it was a blitz with a transfer case then the winch would be driven off the t/case pto which would give the winch forward and reverse speeds by using the truck gearbox. A braking device would also be available for the operater to hold the winch in any position.
I am sure some sort of slew locking device would also be used.
Outriggers do not appear to be in use on the blitz , but looking at the picture of Ford truck with derrick one can see outriggers and looking at the nearest outrigger a chain and pin can be seen dangling and holes on the outrigger bar so it can be pinned in the appropriate position , I am sure these would be available in the other pictures but not in use at that time.
Regards
Jim S.