SWING BEARING TORQUE PROCEDURE
A number of causes can reduce tension in the bolts when torquing and after use. These
include rust on the threads, damaged or rough threads on bolts or nuts, shanks of bolts
which hang up on holes, etc. All of these causes have a tendency to absorb the torque
when bolts are being tightened.
All the fasteners inside the upperstructure and the four outside must be checked. This
includes a total of sixtyfour (64) capscrews to be checked. If ANY are found to have
loosened, ALL sixty-four (64) must be retorqued.
Remember, it is important to perform periodic checks of the swing bearing bolts. The bolt
MUST BE KEPT TORQUE TIGHTENED.
The following equipment is required for checking swing bearing bolt torque:
DESCRIPTION
(1) 3/4 drive ratchet head torque wrench with 200 lb. capacity
(1) 16” extension - 3/4 drive.
(1) 8” extension - 3/4 drive
(1) 7/8” 12 pt. socket - 3/4 drive.
T300-1_T500-1_T780
Maintenance
334 P/N 12261-683
REVISED: January 2015
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