CORE AS 3819152 - Caterpillar

Start By:
Remove the valve cover base. Refer to Disassembly and Assembly, "Valve Cover Base - Remove and Install".
Remove the speed/timing sensor. Refer to the Service Manual, "Electronic Troubleshooting" module.
Remove the electronic control module. Refer to Disassembly and Assembly, "Electronic Control Module (ECM) and Personality Module (PM) - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
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Remove tube assemblies (1).
Remove bolts (3) and covers (2) from both sides of the engine.
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Remove covers (4) from both sides of the front housing.
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Pull valve lifters (5) away from the camshaft. Hold valve lifters (5) in position with O-ring seals.
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Remove covers (6) for the camshaft drive gears from the flywheel housing.
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Remove the bolt and plate (7) that fastens camshaft drive gear (8) to the camshaft.
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Place the three washers from Tooling (B) behind plate (7) and install the bolt.
Do not apply more than 51675 kPa (7500 psi) pressure to the hydraulic puller. The adapters are rated at 6 1/2 tons each and the hydraulic puller is rated at 17 tons at 68900 kPa (10000 psi). If too much pressure is applied, the gear may be damaged.
Install Tooling (B) on camshaft drive gear (8). Apply 51675 kPa (7500 psi) to Tooling (B). Strike the screw on Tooling (B) with a hammer until camshaft drive gear (8) is free from the camshaft. Remove Tooling (B) and camshaft drive gear (8).
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Remove bolts (9) and thrust washers (10) that fasten the camshaft to the engine block.
Perform Steps 5 through 9 for the camshaft on the other side of the engine.
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Remove timing ring (11) from the camshaft.
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Install Tooling (C) on each end of the camshaft. Note: Tooling (D) can be installed on the flywheel housing in order to remove the camshaft from the rear. Tooling (D) can also be installed on the front housing in order to remove the camshaft from the front of the engine.
Install Tooling (D) on the flywheel housing.
Install Tooling (E) on the end of Tooling (C). Note: The following Step is for 3508B Engines.Note: The weight of the camshaft for 3508 Engines is approximately 46 kg (101 lb). The camshaft is one piece.
Rotate the camshaft with Tooling (E). Pull the camshaft out of the engine until a suitable lifting device can be attached. Remove the camshaft from the engine. Note: The following Steps are for 3512B and 3516B Engines.Note: The weight of the camshaft for 3512B Engines is approximately 72 kg (158 lb). The weight of the camshaft for 3516B Engines is approximately 82 kg (181 lb).
Rotate the camshaft with Tooling (E). Pull the camshaft out of the engine until a suitable lifting device can be attached. Remove front camshaft (12) and rear camshaft (13) as a unit.
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Remove bolts (14). Separate the camshafts and remove spacer (15).
Remove the dowel from the front of the camshaft, if necessary.
Repeat Steps 11 through 18 for the other camshaft.