Figure 13.6 Crosshead arrangement
rod and transfers the combustion forces from the crown to the rod. The crown and skirt are held together by screws while a heavy Belleville spring is used to the crown and the cooling insert against the press piston rod. The crown has chromium plated grooves for five piston rings while the rod has longitudinal bore in which is mounted the a cooling oil outlet pipe. The oil inlet is through a telescopic pipe fastened to the crosshead, and the oil passes through a bore in the foot of the piston rod to the cooling insert (Figure 13.7).
Cylinder cover
The cylinder is in two parts, a solid steel late with radial cooling cover water bores, to which a forged steel ring with bevelled cooling water bores is bolted. The insert has central bore for the exhaust valve a cage and mountings for fuel valves, safety valve and an indicator a valve.
The cover is held against the cylinder liner top collar by studs screwed into the cylinder block and the nuts are tightened by a special