its is the click type wrench. When the guy sent it to me, he had it turned all the way down to protect the spring (so he understood that concept at least) but it looked like it had been set on the shop floor a few too many times.

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'82 240D 224K miles manual transmission
mods: wooden 4by4 bumper, EGR delete and older EX manifold without EGR port, glass pack muffler (cheapest replacement muffler), rebuilt bosch injectors with Monark nozzles

working on: aux electric fuel pump, coolant/fuel heat exchanger/filter head, afterglow, low oil pressure buzzer/LED