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

Intake Manifold Removal Start By: a . Remove fuel lines and linkage from carburetor. b . Remove coolant bypass line from manifold. c . Remove the distributor from the manifold. 1 . Remove the bolts from manifold. 2 . Remove the intake manifold from the engine. 3 . Remove the intake manifold gaskets from location. 4 . Clean mounting surface where RTV sealant was used. Valve Train Component Removal Tools Required : J 3049-A Valve Lifter Remover (Plier Type) J 9290-01 Valve Lifter Remover (Slide Hammer Type) Figures 12-6 through 12-8 Remove or Disconnect IMPORTANT:

Store all reusable components in an exact order so they can be reassembled in the same wear pattern location from which they were removed. Mark the front end of the retainer. 1 . Rocker arm nuts, balls, and valve rocker arms. 2 . Valve pushrods. 3 . Bolt. 4 . Valve lifter retainer. 5 . Valve lifters. Figure 12-6 Valve Rocker Arm and Components IMPORTANT : Remove the lifters one at a time using a magnet. Place the lifters in the organizer rack, or tag them in some way to ensure they can be returned to the valve lifter bore from which they were removed. Some lifters may be stuck in their bores due to gum or varnish deposits.

These lifters can be removed using either J 3049-A (figure 12-7) or J 9290-01 (figure 12-8). G643 (E) Service Manual Chapter 3. Engine Mechanical System 64