fig7 b shows the bottom of top bulkhead 42 it has a plurality of outlets 55 that communicates with manifold 48 and reservoir 47 bottom bulkhead 43 uses the compression check valves 50 and directs fluid from the bypass tubes 38 back into shock body 36 bottom bulkhead 43 also directs fluid inside the shock body outside the bypass tubes 38 and into the top bulkhead 42 for direction to reservoir 47 bypass tubes allow fluid to flow around the piston 52 from above to below these bypass tubes 38 direct the fluid to the check valves and this fluid forces them open or closed depending on the direction of travel of the piston piston rod 34 and piston 52 move dynamically within shock body 36 as the piston 52 travels up or down port holes in the shock body 36 allow oil to bypass the piston via the bypass tubes 38 bottom bulkhead 43 is illustrated in fig8 a and 8b fig8 b is a top view of bottom bulkhead 43 it shows a plurality of compression check valve guides 56 for receiving compression valves 50 the specific structure of compression valves 50 is illustrated in fig1 a and 10b they have a check valve piston 59 separated from a check valve stop 60 by a plurality of springs 61 rebound check valve 45 is illustrated in fig9 a and 9b it has a check valve piston 63 separated from a check valve stop 66 by coil springs 64 a threaded stud 68 functions just like the adjuster rods 70 when the bypass adjuster 76 is turned this moves the check valve stop 68 up or down.