312C Excavator Machine Systems Blade - Remove and Install Caterpillar

Removal Procedure

Show/hide table

Illustration 1	g00821518

1. Attach Tooling (A) and a suitable lifting device around blade cylinders (1). The weight of each blade cylinder (1) is approximately 64 kg (141 lb).

2. Remove the retaining bolts (3) from pin assemblies (2) which fasten the head ends of blade cylinders (1) to the push arms.
   Show/hide table

   Illustration 2	g00821827

3. Record the number of shims (4) on each side of each blade cylinder (1) before you remove the pin assemblies (2).

4. Remove pin assemblies (2) and lift blade cylinders (1).
   Show/hide table

   Illustration 3	g00821316

5. Position Tooling (C) across the track and lower blade cylinders (1) onto Tooling (C).
   Show/hide table

   Illustration 4	g00821965

6. Attach three slings, Tooling (A), Tooling (B) and a suitable lifting device to blade (5). The weight of blade (5) is approximately 454 kg (1000 lb). Use Tooling (B) to stabilize the blade.
   Show/hide table

   Illustration 5	g00821436

7. Remove retaining bolts (6) from the pin assemblies (7) which secure push arms (8) to the undercarriage frame assembly. Record the number of shims that are located on each side of each push arm (6). Remove pin assemblies (7) and remove the blade from the machine.
   Show/hide table

   Illustration 6	g00821456

8. Install Tooling (D) on one push arm. Remove the seals and the bearing. Repeat this Step for the remaining push arm.

Installation Procedure

Show/hide table

Illustration 7	g00821459

1. Install Tooling (D) on one push arm. Install the bearing and seal. Make sure that the seal lip faces outward. The seal must not extend past the face of the boss. Repeat this Step for the remaining push arm.
   Show/hide table

   Illustration 8	g00821411

2. Install Tooling (A), Tooling (B), and a suitable lifting device in order to position the blade (5). The weight of blade (5) is approximately 454 kg (1000 lb). Use Tooling (B) to stabilize the blade.
   Show/hide table

   Illustration 9	g00821436

3. Install pin assemblies (7) and the shims in order to fasten push arms (8) to the undercarriage frame assembly. Make sure that you install the proper number of shims on each side of each push arm. Install retaining bolts (6) for pin assemblies (7).
   Show/hide table

   Illustration 10	g00821518

4. Attach Tooling (A) and a suitable lifting device around blade cylinders (1). The weight of each blade cylinder (1) is approximately 64 kg (141 lb).
   Show/hide table

   Illustration 11	g00821316

5. Lift blade cylinders (1), and remove Tooling (C).
   Show/hide table

   Illustration 12	g00821827

   Show/hide table

   Illustration 13	g00821305

6. Lower blade cylinders (1). Install pin assemblies (2) and shims (4). Make sure that you install the proper number of shims (4) on each side of each blade cylinder (1). Install retaining bolts (3) for the pin assemblies.