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Technical description:
Before the transformation:
only one kind of engine conduit seat pressing
After the transformation:
1, compatible with two kinds of diesel engine conduit seat pressing
2, design a new model of seat indenter, the conduit remains unchanged, manually switch the seat indenter   3, redesign the liquid nitrogen tank to adapt to the new seat size  
4, manual switching of two models of feed track
5, manual switching of cylinder head tooling

Technical note:
Before transformation: manual pre-screwing + tightening of bolts.
After transformation: the upper station is manually pre-screwed, and the station is automatically tightened, saving one labor.

Technical description:
Before the transformation: two kinds of oil, two stations, manual filling, oil port and main oil passage two positions of oil filling.
After modification: single station, oil port and main oil channel automatic filling, two positions two types of oil automatic switching
save one labor.