Komatsu PC138US-11 Operation & Maintenance Manual page 409

ATTACHMENTS AND OPTIONS
(8) 2-piece boom cylinder rod end pin (1 place)
(9) Boom and arm connection pin (1 place)
(10) Arm cylinder rod end pin (1 place)
(11) Bucket cylinder foot pin (1 place)
(12) Arm-link connection pin (1 place)
(13) Link connection pin (1 place)
(14) Bucket cylinder rod end pin (1 place)
(15) Bucket and link connection pin (2 places)
(16) Blade connection pin (2 places)
(17) Blade cylinder foot pin (2 places)
(18) Blade cylinder rod end pin (2 places)
WENAM00111
2-PIECE BOOM
RKA45240
RKA60770
RKA60780
RKA60790
RKA60800
6-9