Recirculation to BOV Conversion

3/3/2002
a-recirc-bov1 a-recirc-bov2 b-manifoldvacuum2 c-cobaltbits1 c-drill-shaft
d-tapshaft e-cutscrew f-shortscrew g-heatspring h-newshape
i-grindspringseat j-aoldspring j-newsprings k-installspringpiston kj-tightenscrew
l-drillsethole m-taphole n-bov1 n-bov2 n-bov3