CYLINDER HEAD REPAIR - CONTINUED
DISASSEMBLY - CONTINUED
Replace dowels and plugs only if necessary.
Dowel removal procedure is the same for round, diamond, or hollow dowels.
Cover exposed areas to guard against welding sparks.
Fabricate piece of sheet brass (24) with hole large enough to fit over dowel being removed.
Tack weld flat washer (25) to top of dowel as shown.
Tack weld nut (26) to flat washer (25). Ensure thread of nut matches thread of slide hammer shaft (27).
Thread slide hammer shaft (27) into nut (26) and remove dowel.
Cylinder head repair conditions may warrant cylinder head pressure testing before complete head disassem-
bly. Testing should be performed before injector tubes, cup plugs, and pipe plugs are removed. Refer to
Inspection steps 2 through 10 for pressure testing.
If worn, damaged or leaking, replace injector tubes by placing injector tube installation/removal tool (28) in injector
tube. Insert pilot (29) through small opening of injector tube and thread pilot into tapped hole in end of installation/
Using brass hammer or fiber mallet, tap on end of pilot (29). Carefully drive and lift injector tube, installation/removal
tool (28), and pilot from cylinder head (2). If injector tube o-ring seal is not removed with injector tube, remove o-ring
seal from cylinder head casting at upper end of injector tube bore. Discard injector tube and o-ring seal.