BEARING 3879845 - Caterpillar

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Attach a suitable lifting device to fender assembly (12) . The weight of fender assembly (12) is approximately 159 kg (350 lb). Remove bolts (13) and (14) .
Remove fender assembly (12) .
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Raise lift arms (15) in order to access the rod end pin of the lift cylinder, as shown. Attach a suitable lifting device to lift arms (15) . The weight of lift arms (15) is approximately 9980 kg (22000 lb).
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Remove bolt (16) . Install Tooling (B) in order to remove collet (17) . Remove collet (17) .
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Attach Tooling (A) and a suitable lifting device to lift cylinder (18) . The weight of lift cylinder (18) is approximately 1360 kg (3000 lb).
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Install a suitable lifting device to Tooling (E) . Install Tooling (E) in order to remove pin (19) . The weight of Tooling (E) and pin (19) is approximately 195 kg (425 lb). Remove pin (19) . Retract the cylinder.
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Lower lift cylinder (18) onto suitable cribbing, as shown. Remove Tooling (A) .
Repeat Steps 13 and 16 for the opposite side.
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Remove cover (20) .
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Typical Example
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Attach a suitable lifting device to Tooling (F) . Install Tooling (F) and Tooling (J) in order to remove pin (21) . The weight of pin (21) and Tooling (F) is approximately 340 kg (750 lb).
Assemble Tooling (H) and Tooling (L) , as shown. Attach Tooling (H) and Tooling (J) to the lift arm. Pump grease into the lift arm. Build the pressure, but do not exceed 69 MPa (10000 psi). Pressure will drop slowly as grease is introduced between the cartridge and the lift arm. Continue adding grease until pressure stabilizes. Use Tooling (F) in order to pull pin (21) beyond the pressed fit. Verify that no trapped pressure remains in Tooling (H) and Tooling (J) . Remove Tooling (H) and Tooling (J) . Use Tooling (F) in order to pull pin (21) . Repeat for opposite side.
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Remove lift arms (15) .