Komatsu PC4000, Assembly Procedure

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Ass emb ly Proced ur e PC4000
PC4000Asrev05
Edition 08/2005
75
3.21 Assembl y of Bull clam Buck et to the Stick (Z21876)
Deliv ery in tw o part (clam - rear wall)
1. Place the rear wall as shown on the ground.
2. Prepare the pin seals according to page 78.
3. Lift the attachment and retract the stick until the stick is in a
vertical position.
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For the moun tin g of t he pin seals please refer to page 78.
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Be carefully, watch the stick cylinder hose, because the
cylinder is not fi xed.
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Make sure that the bucket cylind er is in correct pos ition. The
contact surface from the cylinder eye must poi nt to t he front,
away from th e machin e.
4. Move the excavator to the rear wall.
5. Push the pins (1) from (A) to (B) so far as the stick can mount.
6. Align the bores of the stick with the bores of the rear wall.
7. Insert pins (1) from outside to inside (B to A) and secure with
the axle stirrups and install lock plates (3)
8. Push the pins (2) from (A) to (B) so far as the bucket cylinders
can mount.
9. By moving extending the bucket cylinders align the cylinder
eyes with the bores of the rear wall.
10. Push pins (2) from outside to inside (B to A) so far that the axle
stirrup (4) can be installed.
11. Connect the hydraulic hoses (clam cylinder hose) to the rear
wall.
12. Retract the clam cylinder fully in
13. Place the clam shell into position as shown.
14. Push out all pins (1 and 5).
15. Align the rear wall borings by moving boom, stick and bucket
cylinder with the clam borings.
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Be carefully, w atch the clam cyli nder.
16. Install pins (5) and lock with catch (3+4).