RADIATOR & HYD OIL COOLER GP 2302906 - Caterpillar

Improper lubrication can cause damage to machine components.To avoid damage, make sure that the proper amount of grease is applied to the swing drive.When the amount of grease in the compartment becomes too large, the agitation loss becomes large, thereby accelerating grease deterioration.Grease deterioration can cause damage to the pinion gear of the swing drive and swing internal gear. Not enough grease will result in poor gear lubrication.
Illustration 1 g00834990Remove the inspection cover that is located near where the boom base would be. Inspect the grease.
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Remove bolts (1) and washers (2). Remove cover (3) and gasket (4).
Illustration 3 g00115464
Inspect gasket (4). Replace the gasket if damage is evident.
Check the level of the grease. The grease should be evenly distributed on the floor of the pan. Refer to Operation and Maintenance Manual, "Capacities (Refill)" for the capacity of the swing gear.Add grease, as needed. Remove grease, as needed. Too much grease will result in the deterioration of the grease that is caused by excessive movement of the grease. Too little grease will result in poor lubrication of the swing gear.
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Check for contamination and for discolored grease.
If the grease is contaminated or discolored with water, change the grease. Remove plug (5) in order to allow the water to drain. When you reinstall plug (5), inspect O-ring seal (6). Replace the O-ring seal if damage is evident.
Rotate the upper structure at every 90 degrees, until you complete a full rotation. Add grease, as needed.