Doosan G643 LP Engine — DOOSAN G643 LP Engine Service Manual PDF Download (EN)

4 . Remove head gasket. Torsional Damper Removal Figure 12-9 Remove or Disconnect Tool Required: J 39046 Torsional Damper Puller and Installer NOTICE : The inertial weight section of the torsional damper is assembled to the hub with a rubber sleeve. The removal procedures must be followed (with the proper tools) or movement of the inertia weight section of the hub will destroy the tuning of the torsional damper and the engine timing reference. 1 . Torsional damper bolt. 2 . Torsional damper using J 39046 (figure 12-12). 3 . Crankshaft key. Oil Pan Removal Figures 12-10 and 12-11 Remove or Disconnect 1 . Oil filter adapter bolts. 2 . Oil filter adapter gasket. 3 .

Oil filter adapter O-ring seal, if equipped. 4 . Oil filter adapter. 5 . Oil pan nuts. 6 . Oil pan bolts. 7 . Oil pan. 8 . Gasket. Figure 12-10 Oil Filter Adapter Equipped with Oil Cooler (Typical) Figure 12-9 Removing Torsional Damper Figure 12-11 Oil Pan G643 (E) Service Manual Chapter 3. Engine Mechanical System 66