Hitachi Zaxis 850LC-3 Operator's Manual page 293

6. Install the tooth point onto the nose.
7. Drive in pin locks
Push the tooth point onto the nose as illustrated.
Drive in the pin lock with a sledge hammer.
NOTE: Drive in the pin lock from the top until it is 4 to 5 mm
below the tooth point surface. Then, hit it up from the
reverse side to flatten both ends. If this process is not
followed correctly, the rubber lock and pin lock may
easily be knocked off pitch.
When the pin lock is hard to drive in, tap the tip end of the
tooth point from A direction a few times. Then try to drive
in the pin lock again. After the pin lock is seated, tap the tip
end of the tooth point from direction B to check if the pin
lock is securely seated.
NOTE: When the tooth point comes in contact with the pin
lock, as shown in the right figure, the service life of the
nose has finished. Consult your authorized Hitachi
dealer.
MAINTENANCE
7-81
Push
Tooth Point
B
A
Tooth Point
M112-07-096
M112-07-097
Pin Lock
M112-07-098
Pin Lock
M112-07-099