KIT-GASKET 1508685 - Caterpillar

D398 (66B) D399 (35B) G398 (73B) G399 (49C)The timing procedure shown in this instruction is for tandem D398-G398 Engines and tandem D399-G399 Engines. Get the timing procedure on other model combinations from Caterpillar Industrial Division Engineering. For information on the original installation and alignment of tandem engines, see the engineering drawings given with the specific engine and coupling group and Form No. LEHM1469, "CATERPILLAR MARINE ENGINE APPLICATION AND INSTALLATION GUIDE". (1) Remove cover (1) from the flywheel housing on both engines. Remove the valve cover from the No. 1 cylinder on both engines. Turn the crankshaft of the No. 2 engine (the engine nearest the driven load) in the normal direction of rotation until timing pointer (2) is in alignment with the "TC 1-11" mark on the flywheel of D398-G398 engines or the "1-15" mark on the flywheel of D399-G399 engines as shown. There must be no movement of intake valve (3) or exhaust valve (4)