ACTUATOR GP-PUMP 1772568 - Caterpillar

Note: Before any timing adjustments are made, make sure that adjustments are necessary. Refer to "Timing Check".After the timing check procedure is completed, the timing bolt will be engaged in the flywheel with No. 1 piston at the top center (TC) position.
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Rocker arm shaft assembly (1) Bolt (2) Rocker Shaft
Remove all valve covers on the side of the engine with the camshaft that needs adjustment. Disconnect the ignition wiring from the ignition transformer and remove the ignition transformer. Loosen bolts (1) that hold rocker shaft (2) to the valve cover bases until all rocker arms are free from the valves.Note: The above procedure must be done before the camshaft drive gear is pulled off the camshaft taper.
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Left rear (3) Cover (4) Speed/Timing sensor
Remove camshaft gear cover (3) from the rear of the engine. If the left rear camshaft gear must be removed, remove speed/timing sensor (4) .
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Rear gear group (5) Gear (left camshaft drive) (6) Idler gear (7) Speed/Timing ring (8) Gear (right camshaft drive) (9) Washer (10) Bolt (11) Bolt (12) Plate
To remove the left camshaft drive gear, remove bolt (10) and washer (9). Remove speed/timing ring (7) from the left camshaft.
To remove right camshaft drive gear, remove bolt (11) and plate (12) from the right camshaft.
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Removing the camshaft drive gear (A) 1P-0820 Hydraulic Puller (12) 4W-4586 Plate
Use tooling (A) to remove camshaft drive gears (5) and (8) .
Install the three 5H-1504 Hard Washers behind plate (12). This plate holds the camshaft drive gear on the camshaft. Install plate (12) and bolt (11) on the camshaft.
Do not apply more than 41,340 kPa (6,000 psi) of pressure to 1P-0820 Hydraulic Puller. 8B-7559 Adapters are rated at 5 ton each and 1P-0820 Hydraulic Puller is rated at 17 ton at 68,900 kPa (10,000 psi). If too much pressure is applied, the gear may be damaged.
Use the 8B-7559 Adapter and needed parts from the 8B-7548 Push-Puller Tool Group to install the 1P-0820 Hydraulic Puller on the camshaft drive gear. Apply 41,340 kPa (6,000 psi) to the puller and tap the screw until the camshaft drive gear is free of the camshaft taper. Remove the tooling and the camshaft drive gear from the camshaft.
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Camshaft timing (13) Timing pin
Remove timing pins (13) from the storage positions which are located under the rear camshaft covers on each side of the engine.
Turn the camshafts until timing pins (13) can be installed through timing holes and into the grooves (slots) in the camshaft.
Use the following procedure to install camshaft gears (5) and (8) :
For correct timing, the timing bolt must be installed in the flywheel and all gear clearance (backlash) must be removed. Turn the camshaft drive gears in the same direction as crankshaft rotation and hold in this position.
Pin both camshafts and put the camshaft drive gears in position in line with idler gears (6) on each camshaft taper.Note: Make sure that the gear tapers and the shaft tapers are clean, dry, and free of lubricants.
Install speed/timing