GUARD AS 1103166 - Caterpillar

Push valve lifters (2) away from the camshaft. Hold valve lifters (2) in position with an O-ring seal.
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Remove bolts (3) and clamps (4). Use two people in order to remove exhaust manifold (5). The weight of exhaust manifold (5) is approximately 45 kg (100 lb).
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Remove bolts (7).
Remove bracket (8).
Disconnect tube assembly (6).
Remove cover (9) and cover (10).
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Install Tooling (C).
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Remove speed sensor (11).
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Remove cover assemblies (12).
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Remove bolt (13).
Remove timing ring (14).
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Remove bolt (15) and plate (16) from camshaft drive gear (17).
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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.
Place the washers from Tooling (B) behind plate (16). Install the bolt and plate (16) onto camshaft drive gear (17).
Install Tooling (B) on camshaft drive gear (17). Apply 51675 kPa (7500 psi) to the puller and hit the screw on the puller with a hammer until camshaft drive gear (17) is free from the camshaft. Remove Tooling (B) and camshaft drive gear (17).
Repeat Step 14 through Step 15 for the remaining camshaft drive gear.
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Remove bolts (18) and thrust washer (19).
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Install Tooling (C) onto camshaft (20). 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 camshafts are in two pieces.
Rotate the camshaft with Tooling (E). Pull camshaft (20) out of the engine until a suitable lifting device can be attached. The weight of the 3516 engine camshaft is approximately 80 kg (176 lb). The weight of the 3520 engine camshaft is approximately 100 kg (220 lb). Remove camshaft (20) from the engine.
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Remove bolts (23) in order to separate the camshafts. Remove spacer (22). Remove dowel (21), if necessary.
Repeat Step 17 through Step 22 for the remaining camshaft. Installation Procedure
Install camshafts (20) in the reverse order of removal. Note: If the dowel was removed from the half of the camshaft, install the dowel. The dowel should be 22.00 0.5 mm (0.870 0.02 inch).
Install bolts (23) in order to connect the camshafts. Tighten bolts (23) to a torque of 54 7 N m (40 5 lb ft).
Tighten bolt (13) to a torque of 360 N m (265 lb ft).
Place a mark on bolt (13).
Place a driver against the retaining plate of the camshaft gear. Strike the driver solidly with a hammer 3 to 4 times.
Tighten bolt (13) again to a torque of 360 N m (265 lb ft).
Repeat Steps 1.d and 1.e until the mark has turned at least 90 degrees.