Yetter 2910-042 Frame Mount Coulter - Manual (Page 4)

4
BOLT TORQUE
Mounting bolts and hardware
Before operating the 2910 Frame Mounted Coulter for the first time, check to be sure that
all hardware is tight. Check all hardware again after approximately 50 hours of operation
and at the beginning of each planting season.
All hardware used on the 2910 Frame Mounted Coulter is Grade 5 unless otherwise
noted. Grade 5 cap screws are marked with three radial lines on the head. If hardware
must be replaced, be sure to replace it with hardware of equal size, strength and thread
type. Refer to the torque values chart when tightening hardware.
Important: Over tightening hardware can cause as much damage as when
under tightening. Tightening hardware beyond the recommended range can reduce
its shock load capacity.
The chart below is a guide for proper torque. Use it unless a specified torque is called out
elsewhere in the manual.
Torque is the force you apply to the wrench handle or the cheater bar, times the length of the
handle or bar.
Use a torque wrench whenever possible.
The following table shows torque in ft. lbs. for coarse thread hardware.
Lubricate all bearings and moving parts as assembled and make certain that they work freely.
WARNING: Never work around the toolbar/implement while in a raised position without using
safety lockups.
CAUTION: The 2910 Frame Mounted Coulter attachment is very heavy. Pay extra attention to
lifting techniques while handling and or maneuvering the opener during assembly. Failure to
do so may lead to personal injury.