ENGINE AR 8N2886 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 482-0189 Valve Guide Driver 1 Start By:
Remove the inlet and the exhaust valves.
Removal and installation of the valve guide and valve seat must be carried out by personnel with the correct training. Also special machinery is required. For more information, refer to your authorized Caterpillar Dealer.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g06327366
Use a suitable press and Tooling (A) to remove valve guides (2) (not shown) from cylinder head (1).
Repeat Step 1 for the remaining valve guides (2) (not shown).Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 482-0189 Valve Guide Driver 1
B 482-0188 Stop Collar 1
C 482-0190 Reamer 1
Removal and installation of the valve guide and valve seat must be carried out by personnel with the correct training. Also special machinery is required. For more information, refer to your authorized Caterpillar Dealer.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Clean the parent bores in the cylinder head for the valve guides.
Illustration 2 g06327367
Illustration 3 g06327368
Lubricate a new valve guide (2) with clean engine oil. Place valve guide (2) into position on cylinder head (1). Carefully tap the valve guide to start the installation.
Use a suitable press, Tooling (A), and Tooling (B) to install valve guide (2) into the cylinder head. Install valve guide (2).
Repeat Step 2 and Step 3 for the remaining valve guides (2).
Check Protrusion (X) of valve guides (2). Valve guides (2) should protrude 12.7 mm (0.50 inch) above the valve spring recess. Refer to Specifications, "Cylinder Head Valves" for more information.
After installation of valve guides (2), valve guides (2) must be reamed and the valve seat inserts must be cut to the finished diameter. Follow Steps 6.a through 6.d to ream valve guides (2) and cut the valve seat inserts.
Lubricate the bores of valve guides (2) with clean engine oil.
Use Tooling (C) to ream valve guides (2). Ensure that even pressure is applied to Tooling (C).
Use Tooling (C) to cut the valve seat inserts. Ensure that even pressure is applied to Tooling (C).
Ensure that the cylinder head is clean and free from machining debris.
Check the finished diameter of valve guides (2). Refer to Specifications, "Cylinder Head - Valves" for more information.
Check the depths of the valves below the face of the cylinder head. Refer to Testing and Adjusting, "Valve Depth - Inspect" for more information.End By:
Install the inlet and the exhaust valves.