Komatsu PC4000, Assembly Procedure

Page: 80 / 94

Ass emb ly Proced ur e PC4000
PC4000Asrev05
Edition 08/2005
79
3.22 Mounting of the Pin Seals (Z22042)
The illustration shows the mounting places of the outer bushing seals
(A) and the inner bushing seals (B) of the front shovel attachment..
Mounting pro cedure inner pin seals (B):
1. Remove respective pins
2. Fill the grooves inside of the bushings with grease
3. Install the seals and align it.
4. Assemble the boom and the stick as described
Mounting pr ocedure outer pin seals (A):
1. Remove respective pins.
2. Slide seals (1) on the collar of the respective bushings in the
rear wall of bucket Fig. X.
3. Assemble the stick as described.
4. Install both fixing halves (2) over the seal ring (1) and tighten
bolts (3). Fig. Y shows the already assembled pin connection.

•
The fixing halves can mount only in one position because of
two different inner di ameters.
•
Fill the groove of the fixi ng halves before installing w ith gr ease.
•
Proper fun ctionin g of t he seal is only established in case of an
intact seal ring.
Legend il lust r. Z 22042:
A Position of outer pin seal with fixing halve
B Position of inner pin seal with seal groove
(1) Seal ring
(2) Fixing halve
(3) Bolt
(4) Bushing
(5) Pin
(6) Cylinder eye