ADAPTER 7E7255 - Caterpillar

Start By:
Remove bucket
Remove bucket link
Remove tilt link
Remove tilt cylinder
When you are using hydraulic cylinders and puller studs, always ensure that the rated capacity of the puller stud meets or exceeds the rated capacity of the hydraulic cylinder. If the puller stud does not meet or exceed the rated capacity of the hydraulic cylinder, a sudden failure of the puller stud could occur. The sudden failure of the puller stud could result in personal injury or death.
Illustration 1 g06298633
Position Tooling (A) under boom (1) to gain access to the lift cylinder pins. The weight of boom (1) is approximately 3300 kg (7275 lb).
Illustration 2 g03426150
Attach a suitable lifting device to lift cylinder (2). The weight of cylinder (2) is approximately 400 kg (882 lb).
Illustration 3 g03426154
Remove bolt (3).
Illustration 4 g03426158
Attach a suitable lifting device to Tooling (B). The weight of Tooling (B) is approximately 136 kg (300 lb). Install Tooling (B) onto pin assembly (4). The weight of Tooling (B) and pin assembly (4) is approximately 181 kg (400 lb). Remove Tooling (B) and pin assembly (4). Lower lift cylinder (2) on to suitable cribbing.
Repeat Steps 2 through 4 for the opposite side.
Illustration 5 g03424951
Remove bolts (5) and cover (6). Disconnect harness assemblies (7).
Illustration 6 g06298653
Typical view of boom removal
Attach a suitable lifting device to boom (1). The weight of boom (1) is approximately 3300 kg (7275 lb).
Illustration 7 g03424981
Attach a suitable lifting device to Tooling (C). The weight of Tooling (C) is approximately 136 kg (300 lb). Install Tooling (C) onto pin assembly (8). The weight of Tooling (C) and pin assembly (8) is approximately 181 kg (400 lb). Remove Tooling (C), pin assembly (8).
Repeat Step 8 for the opposite side.
Remove boom (1).Installation Procedure
Illustration 8 g03485498Note: Use Illustration 8 as a guide for the pins and the pin joints that are being referenced in this procedure.
Install boom (1) in the reverse order of removal.
Check and replace lip seals if necessary. If replacing the lip seal, apply Tooling (E) to the bore.
Lubricate the diameter of A-pin (4) with Tooling (F). Use Tooling (D) to install A-pin (4). Add Tooling (G) through grease hardware until lubricant extrudes from seal.
Lubricate the diameter of K-pin (8) with Tooling (F). Use Tooling (D) to install K-pin (8). Add Tooling (G) through grease hardware until lubricant extrudes from seal.