Figure 4-8. Bridge Guide, Removal.

TM 55-1930-208-24

4-10. HEAD, CYLINDER - Continued.

a. Disassembly - Continued.

(7) Refer to figure 4-8 and place the spacer over the guide remover.

(8) Thread the nut onto the guide remover.

(9) Turn the nut clockwise until the guide is withdrawn from the cylinder head.

Figure 4-8. Bridge Guide, Removal.

(10) Refer to figure 4-9 and set the head on its side.

(11) Place the collet of valve seat removal tool inside of valve seat insert so that bottom of collet is flush with

bottom of insert.

(12) Hold collet handle and turn T-handle to expand collet cone until insert is held securely by the tool.

(13) Insert the drive bar of tool through valve guide.

(14) Tap drive bar to move insert about 1/16 inch away from its seat in cylinder head.

(15) Turn T-handle to loosen collet cone and reposition tool so that the narrow flange is below valve seat insert.

(16) Tighten T-handle and drive insert out of cylinder head.

4-18