PLUG 4472123 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Name Qty
A 230-6284 Timing Pin (Camshaft) 1
B 230-6283 Timing Pin (Crankshaft) 1 Start By:
Remove the fan. Refer to Disassembly and Assembly, "Fan - Remove and Install".
Remove the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove and Install".
Remove the idler gear. Refer to Disassembly and Assembly, "Idler Gear - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01001848
Remove the setscrew (1) and the washer from the camshaft gear (2).
Remove the camshaft gear from the camshaft. Note: Do not lose the key from the camshaft gear.Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Make sure that the No. 1 cylinder is at the top center compression stroke. Refer to Testing and Adjusting, "Finding Top Center Position for No. 1 Piston".
Inspect the camshaft gear and the key for wear or damage.
Install the Tooling (A) through the camshaft gear. Install the Tooling (B) into the crankshaft web.
Illustration 2 g01001848
Install the camshaft gear (2) on the camshaft. Note: Ensure that the key is installed on the camshaft. When you install the camshaft gear, ensure that the marked teeth are facing toward the front. If necessary, tap the gear with a soft hammer in order to seat the key in the keyway. Make sure that the Tooling (A) goes into the hole in the front housing.
Install the setscrew (1) and the washer on the camshaft gear (2). Tighten the setscrew to a torque of 95 N m (70 lb ft).
Remove the Tooling (A) from the camshaft gear. Remove the Tooling (B) from the crankshaft web. End By:
Install the idler gear. Refer to Disassembly and Assembly, "Idler Gear - Remove and Install".
Install the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove and Install".
Install the fan. Refer to Disassembly and Assembly, "Fan - Remove and Install".