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PARTS GP 4Z6902 - Caterpillar

4Z6902 PARTS GP Caterpillar parts PARTS
Alternative (cross code) number:
Caterpillar 4Z6902 PARTS GP
Weight: 0.010 pounds 0 kg.

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Illustration 4 g02458357
Illustration 5 g02458360
The planetary gear group is being held onto the sprocket housing at this time only by Tooling (H). The approximate weight of the planetary group is 163 kg (360 lb). Be careful not to allow the planetary gear group to slide outward.
Remove bolts (3) and ring gear (4) from cover assembly (2). Apply Tooling (K) onto cover assembly (2). Install the cover assembly (2 ) onto the final drive. Install bolts (1), and tighten in order to hold oil in the final drive. Fill final drive with oil. Refer to Operation and Maintenance Manual, "Final Drive - Oil Change".
Illustration 6 g02458377
Adjust the height of Tooling (D) so that Tooling (C) can be installed under the end of the stick, as shown. Make sure that Tooling (C) is centered under the end of the stick.
Illustration 7 g02458379
Disconnect grease hose assembly (5). Remove bolts (6) and plate (7).
Illustration 8 g02458380
Attach a suitable lifting device to boom cylinder (8).The weight of boom cylinder (8) is approximately 380 kg (840 lb). Using Tooling (J) drive pin (9) inward to clear cylinder. Remove boom cylinder (8).
Illustration 9 g03792166
Adjust the length of Tooling (B) and install Tooling (B) in place of the right-hand boom cylinder. The weight of Tooling (B) is approximately 332 kg (732 lb). Be sure to use five bolts, five washers, and five nuts in order to hold Tooling (B) together. Install plate (7) and bolts (6) in order to hold Tooling (B) on machine.
Release the pressure in the hydraulic system.
Illustration 10 g02458416
At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns.To prevent possible personal injury, release the pressure in the work tool hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed.Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch.
Disconnect hoses (10). Remove bracket (11), retaining ring (12), and clamp (13). Note: The swivel will stay with the undercarriage frame.
Illustration 11 g03792196
Position Tooling (E) and Tooling (G) under the main frame, ahead of counterweight (14). Note: DO NOT LIFT BY COUNTERWEIGHT
Illustration 12 g02458500
Illustration 13 g02458501Note: Use the identifying marks on the upper structure, on the swing gear, and on the undercarriage to align the undercarriage with the upper structure for assembly purposes.Note: Loosen bolts (17) that will be over tracks before swinging upper frame to 90 degree position for removal.
Remove tube assembly (16). Remove two bolts (17) from swing gear. Install Tooling (F) into swing gear in order to maintain alignment for assembly . Remove remaining bolts (17). Use Tooling (D) and (G) in order to raise the upper structure off the undercarriage in increments of 13 mm (0.5 inch). Raise the upper structure until the pinion shaft will clear the lower ring gear. The weight of the upper structure is approximately 22217 kg (48980 lb).
Illustration 14 g03794298
Use a suitable towing device and slowly pull the undercarriage frame assembly away from the upper

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