PN 57.4400.0100_020115 - Genie

Section 12Cylinder Head Assembly700 SeriesOperation:Rocker assembly (earlier engines) - to remove and to fit12.02Recommended torque:Engine type Nm lbf ft kgf mSetscrews 9 7 0,9Nuts 22 16 2,2Service operations:1. Remove rocker cover … … … … 12.012. Adjust valve tip clearance … … 12.04Special notes:Caution: Before the rocker assembly is fitted, ensure that the oil holesare free of dirt.Check that the push rods fit correctly in the sockets of the tappets.As the fasteners are gradually tightened, ensure that the ends of theadjustment screws fit correctly in the socket of the push rods.To remove1. Release the eight setscrews for the brackets of the rocker shaft. Release gradually and evenly the outer nuts and then theinner nuts for the brackets of the rocker shaft.Note: The rocker assembly contains three plates which include the studs for the rocker cover. The plates must be fitted to thecorrect rocker brackets.2. Remove the nuts and lift off the rocker assembly.Note: A hardened steel pin is fitted in the lower part of the front bracket. The purpose of this pin, is to ensure that the bracketis in the correct position on the rocker shaft. The hole in the bracket will align with the oil hole in the cylinder head and ensurecorrect lubrication of the rocker assembly. Protect these holes to ensure that dirt cannot enter.To fit1. Before the rocker assembly is fitted, ensure that the oil holes and are free of dirt.2. Check that the push rods fit correctly in the sockets of the tappets.3. Fit the fasteners finger tight.4. Tighten gradually and evenly, the inner nuts and then the outer nuts to 22 Nm (16 lbf ft) 2,2 kgf m.5. Tighten gradually and evenly, the eight setscrews to 9 Nm (7 lbf ft) 0,9 kgf m.6. Adjust the valve tip clearances.05/99Printed in England© Propriety information of Perkins Engines Company Limited, all rights reserved410 51-19M-1-SM 01-29-02 57.4400.010036