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MAINTENANCE
High-Strength Bolt Connections (continued)
Check condition and fastening of travel gears, sprockets and
travel motors
Legend for illustration Z20866:
(1)
Crawler carrier
(2)
Travel gear
(3)
Sprocket
(4)
Travel motor
(5)
Mounting bolts for sprocket to travel gear
(6)
Mounting bolts for travel gear to crawler carrier
(7)
Mounting bolts for travel motors
Reference No.:
(5)
(6)
(7)
* SW = Wrench size
Check all mounting bolts (5, 6 and 7) for correct tightening
torque.
Re-tighten loose mounting bolts and replace missing or dam-
aged bolts.
Bolt size
Grade
mm
M36
10.9
M36
10.9
M20
10.9
4.12 EVERY 1000 OPERATING HOURS OR EVERY 6 MONTH
SW *
Tightening torque
mm
Nm
55
3100
55
3100
30
510
Qty.
48
60
16
367
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