Komatsu PC118MR-8 Operation And Maintenance Manual page 211

FUNCTIONING
Seat belt
q Before fastening the seat belt, make sure that the fastening brackets or the belt itself do not show any
anomaly. If there are damaged or worn parts, change the belt.
q The safety belt can be replaced also if there are not failures or wear signs according to the following
program. 
After 5 years from the production date indicated on the belt back or every 3 years from first use,
whichever is the shortest period.
q Adjust and fasten the seat belt before operating the machine.
q Always fasten the seat belt when working with the machine.
q Make sure that none of the two parts of the belt is twisted.
Make sure that the screws that fasten the belt to the frame are not loose. If necessary, fix it to the tightening torque
of 24.5 ± 4.9 Nm.
Change the belt unit if the surface of the belt is damaged, or if the couplings are broken or deformed.
Fastening and unfastening the seat belt
This belt is provided with a retractor, therefore it is not necessary to adjust its length.
Fastening the seat belt
Seize the grip (2) and extract the belt from the retractor (1),
make sure that the belt is not twisted, then insert the tang (3) in
the buckle (4).
After completing this operation, pull the belt slightly to make
sure that it is correctly locked.
Unfastening the seat belt
Press the button (5) on the buckle (4) and remove the tang (3)
from the buckle (4).
The belt is automatically retracted; at this point seize the grip
(2) and slowly help the belt manually into the retractor (1).
USE OF THE MACHINE AND RELATED CONTROLS
WARNING
WEAM014802
3-127