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LIFT AS- 4250720 - Caterpillar



4250720 LIFT AS- Caterpillar parts LIFT
Rating:
11
Alternative (cross code) number:
CA4250720
425-0720
4250720
Caterpillar 4250720 LIFT AS-
Weight: 5 pounds 2 kg.

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Start By:
Remove the starting motor. Refer to Disassembly and Assembly, "Electric Starting Motor - Remove". Refer to Disassembly and Assembly, "Hydraulic Starting Motor - Remove and Install".
If the exhaust elbow is attached to the flywheel housing, remove the exhaust elbow and remove the bracket for the exhaust elbow. Refer to Disassembly and Assembly, "Exhaust Elbow - Remove and Install".
Remove the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove".
Remove the engine speed sensor. Refer to Disassembly and Assembly, "Engine Speed Sensor - Remove and Install".
Remove the engine speed/timing sensor. Refer to Disassembly and Assembly, "Engine Speed/Timing Sensor - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01126909
Remove rear camshaft covers (1).
Remove timing pin (2) from the storage position.
Remove timing bolt (5) from the storage position. Remove cover (3) and plug (4) from the flywheel housing.
Use Tooling (A) to turn the flywheel to install timing bolt (5) in the flywheel and timing pin (2) in both camshafts. Refer to Testing and Adjusting, "Camshaft Timing". Refer to Testing and Adjusting, "Finding the Top Center Position for the No. 1 Piston".
Remove the timing bolt from the flywheel.
Remove the crankshaft rear seal and the wear sleeve. Refer to Disassembly and Assembly, "Crankshaft Rear Seal and Wear Sleeve - Remove".
Illustration 2 g01126908
Remove tube (6) if equipped.
Remove drain tubes (7) for the turbochargers. Remove the gaskets from the elbows.
Remove covers (8) and the gasket.
Illustration 3 g01316299
Remove bolt (9) and plate (10). Place the three washers from Tooling (B) behind plate (10) and install bolt (9). Install Tooling (B) on camshaft drive gear (11). Apply 51675 kPa (7500 psi) to the puller. Strike the screw on the puller with a hammer until camshaft drive gear (11) is free from the camshaft. Remove Tooling (B) from the camshaft drive gear. Remove camshaft drive gear (11) from the camshaft.Note: Plate (10) must be installed to keep camshaft drive gear (11) on the camshaft during the removal procedure.
Illustration 4 g01316301
Remove bolt (12). Remove ring (13).
Illustration 5 g01316307
Place the three washers from Tooling (B) behind plate (10) and install bolt (12). Install Tooling (B) on camshaft drive gear (14). Use Tooling (B) to remove camshaft drive gear (14) from the camshaft. Apply 51675 kPa (7500 psi) to the puller. Strike the screw on the puller with a hammer until camshaft drive gear (14) is free from the camshaft. Remove Tooling (B) from the camshaft drive gear. Remove camshaft drive gear (14) from the camshaft.Note: Plate (10) must be installed to keep camshaft drive gear (14) on the camshaft during the removal procedure.
Illustration 6 g01316311
Install Tooling (C) and a suitable lifting device on flywheel housing (16). The weight of flywheel housing (16) is approximately 235 kg (518 lb).
Remove two bolts (17) and install Tooling (D). Remove the remaining bolts (17) and remove flywheel housing (16) from the cylinder block.
If necessary, remove plugs (15) from the flywheel housing.Note:


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