Komatsu 15045 Operation & Maintenance Manual page 437

MAINTENANCE
High-Strength Bolt Connections (continued)
Check condition and fastening of both swing gears (01) and
swing motors (02), illust. Z 22514
Reference No.:
(8)
(25)
* SW = Wrench size
Re-tighten mounting bolts to their correct torque and replace
missing or damaged bolts.
REMARK
After checking and retightening of swing gear mounting bolts
(25), attach protection caps (26) onto the bolt heads.
Bolt size
Grade
mm
M 16 10.9
M 24 12.9
4.12 EVERY 1000 OPERATING HOURS OR EVERY 6 MONTH
SW * Tightening torque
mm Nm
24 265
19 1030
Qty.
16
34
437