3512B and 3516B Engines Camshaft - Remove Caterpillar

Removal Procedure

Start By:

1. Remove the rocker shaft assemblies and the pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Remove".

2. It is necessary to remove the electronic control module in order to remove the camshaft from the right hand side of the engine. Refer to Disassembly and Assembly, "Electronic Control Module (Engine) - Remove and Install".

Note: The following procedure is for removing the camshaft from the left hand side of the engine.

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Illustration 1	g01122149

1. Remove camshaft covers (1).
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   Illustration 2	g01157699

2. Remove cover (2) from the front housing.
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   Illustration 3	g01122147

3. Push valve lifters (3) away from the camshaft. Hold the valve lifters in position with O-ring seals.
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   Illustration 4	g01122151

4. Remove cover (4) from the flywheel housing. Remove speed/timing sensor (5) from the flywheel housing.
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   Illustration 5	g01122250

5. Remove bolt (6). Remove ring (7).
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   Illustration 6	g01122265

6. Place the three washers from Tooling (A) behind plate (9) and install bolt (6).

   Note: Plate (9) must be installed in order to keep camshaft drive gear (8) on the camshaft during the removal procedure. Plate (9) can be used from the right hand camshaft drive gear. If necessary, fabricate a plate that has a diameter of 76 mm (3.0 inch). The thickness of the plate must be 19.00 mm (0.750 inch) thick. Drill a hole 22.00 mm (0.875 inch) in the center of the plate.

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   Illustration 7	g01122324

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   NOTICE
   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.

7. Install Tooling (A) on camshaft drive gear (8). Apply 51675 kPa (7500 psi) to the puller. Strike the screw on the puller with a hammer until camshaft drive gear (8) is free from the camshaft. Remove Tooling (A) from the camshaft drive gear. Remove the camshaft drive gear from the camshaft.
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   Illustration 8	g01122334

8. Remove bolts (11) and thrust washer (10).

9. Remove bolts (12) from the front housing.
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   Illustration 9	g01122335

10. Install Tooling (B) onto both ends of the camshaft.

11. Install Tooling (C) on the front housing.

    Note: Tooling (C) can be installed on the flywheel housing in order to remove the camshaft from the rear.

12. Install Tooling (D) on the end of Tooling (B).

    Note: The following Step is for 3508B Engines.

13. Rotate the camshaft with Tooling (D) and pull the camshaft out of the cylinder block until a suitable lifting device can be attached. The weight of the camshaft for 3508B Engine is approximately 36 kg (79 lb). Remove the camshaft from the cylinder block.

    Note: The following Steps are for 3512B and 3516B Engines.

14. Rotate the camshaft with Tooling (D) and pull the camshaft out of the engine until a suitable lifting device can be attached. The weight of the camshaft for 3512B Engine is approximately 74 kg (163 lb). The weight of the camshaft for 3516B Engine is approximately 86 kg (190 lb). Remove the camshaft from the cylinder block.
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    Illustration 10	g01122346

15. Remove bolts (14). Separate the camshafts and remove spacer (13).

16. Remove the dowel from the front of the camshaft, if necessary.