Komatsu H75051, Operation & Maintenance Manual

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4.
Fit the socket wrench to the shaft of pin (1), and turn it
counterclockwise by 90 ° to unlock the pin.
5.
Push out pin (1) to the direction of arrow by hand or ham-
mer, and remove tooth (2).
6.
Check the torque to unlock the pin by using torque wrench
according to the following procedure.
1) Rotate the shaft of pin (1) with torque wrench, and set
it to the lock state (90 °).
2) Rotate the shaft from the lock state (90 °) to free state
(0 °).
3) Check that the maximum torque is 11 Nm {1.12 kgm} and above.
If the torque value is low, replace the pin with a new
one.
T1: Torque (Nm)
T2: Turning angle (degree)
REMARK
The torque value increases gradually and reaches to
the maximum at approximately 45 °, and it decreases
gradually after 45 °.
7.
Clean the mounting surface of tooth (2).
8.
Fit new tooth (2) to the adapter.
9.
Insert pin (1), rotate the shaft of the pin clockwise by 90 °
with socket wrench to lock the pin, and install the tooth.
MAINTENANCE MAINTENANCE PROCEDURE
4-35