Kifco T40x1320 380,540 - 400,110 Operator Manual - Manual (Page 31)

32
--Maintenance and Adjustment--
Caution! Never attempt to retime the Water-Reel without first
pulling all the tube out. Changing the timing with some of the tube
still on the spool may result in damage to the irrigation tube and/or
the Water-Reel.
2. Observe the position of the levelwind carrier drive lug on the horizontal levelwind
chain. (The chain that runs left to right just behind of the compensation bar).
The drive lug must be in its most extreme position (half way around the sprocket
and on the same side of the Water-Reel as the spool elbow. (See diagram).
3. To change the timing, remove the shield and the cap screws from the levelwind
input sprocket. Rotate the hub of the gearbox shaft until the drive lug is
positioned as described in step #2. Re-install the cap screws in the new position.
Reinstall the levelwind drive chain shield.
Gear Box Neutral-Shift and Handle
The gearbox must be shifted to neutral prior to tube pull out, and re-engaged at the
beginning of the irrigation run.
Drive Roller Adjustment
If the drive system has been disassembled, it will be necessary to adjust the mesh of the
ring gear teeth to the gearbox drive roller. The ring gear is a large part that will not be
perfectly concentric. Tape or fix a felt tip marker to a frame member and rotate the drum
with the marker touching the outside face of the main gear. This will mark the point in
which the ring gear teeth are closest to the drive roller. Rotate to this point on the ring gear
so it is exactly at the drive roller. The clearance is adjusted by moving the clamps that
fasten the gearbox mount to the frame of the Water-Reel. Lower the gearbox until the drive
roller just contacts the crotch of the teeth of the ring gear, then tighten the gearbox
mounting bolts. A scissor jack is ideal for raising & lowering the gearbox. Rotate the spool
to be sure the roller to ring gear setting is correct with no interference.
Pinion drive roller
Ring gear
Point on ring gear that is closest to pinion drive rollers