Perkins — Perkins Diesel Engine Workshop Manual (EN)

CYLINDER HEAD-E.3 E7 E9 10. Remove the eight push rods and place somewhere safe (possibly in the cylinder head cover) to avoid the possibility of any being accidentally bent. 11. Unscrew the small banjo bolts on the tops of the atomisers and remove the leak-off pipe by unscrew- ing the union on top of the fuel filter. 12. Remove the low pressure fuel pipes between the fuel filter and the fuel pump, remove the fuel filter after disconnecting the feed pipe from the lift pump, blank off all pipes and ports to prevent ingress of foreign particles. 13. Remove the four high pressure fuel pipes from the fuel pump to the atomisers. Blank off fuel pump outlet ports. 14.

Remove the atomiser securing nuts and carefully remove the atomisers. (Refer to Fig. EA). Blank off the exposed ports on the atomisers. 15. Uncouple the dynamo or alternator adjusting link. 16. Remove the cylinder head securing nuts and lift off the cylinder head complete with the inlet and exhaust manifolds. (Refer to Fig. E.5). NOTE: On 4.99 and 4.107 engines, to prevent liner movement should the engine be turned with the cylinder head removed, it is suggested that the liners are held in position by suitable tubing placed over two of the cylinder head studs and locked with nuts and washers.

To Remove the Valves With earlier engines, the valves were numbered and the cylinder head was marked with corresponding numbers (see fig. E.6). With current engines, the valves and seats are not numbered and where a valve is to be used again, it should be suitably identified to ensure it is replaced in its original position. 1. Remove collets by compressing the valve springs as shown in Fig. E.7. 2. Remove the spring caps, springs, seals (where fitted) and spring seats. Remove valves. E8 E10