Drive Wheel Replacement
The drive wheel rubber element will wear with use. When the line has worn a
groove in the drive roller element such that the drive roller will no longer grip the
line it must be replaced. To replace simply force the worn rubber drive element
off by prying under it with a screwdriver and discard. Install the new drive
element noting that the tapered inner surface of the drive element and the outer
surface of the drive wheel slope the same way.
ADJUSTMENT PROCEDURE FOR LINDGREN-PITMAN SPOOLS
USING LINE SETTERS
ìCounterbalance Adjustmentî
The Main line spool manifold has a counterbalance valve across the motor ports. The P2 port on the line setter is
connected to the signal port of this counterbalance. With the adjustment of the counterbalance full counterclock-
wise the pilot requires 1300 PSI before it will allow freespooling (if the line setter is set at 1000 PSI maximum
freespooling will not be possible). With the counterbalance full clockwise adjustment it would require only 330 PSI
before allowing freespooling. (This may not be enough for prevention of backlashing and sufficient braking).
The easy method to adjust the counterbalance is as follows:
1
Adjust the line setter power at approximately 1000 PSI, but not above 1300 PSI. Check pressure at the signal
line or pressure input with line threaded through the line setter and the line tied off to prevent rotation.
2
Thread line from the spool through the line setter by opening the ball valve on the spool.
3
Adjust the counterbalance full counterclockwise and close the ball valve.
4
Turn on the line setter slowly and let it pull on the spool line. The spool may not turn.
5
Turn the adjustment screw on the spool counterbalance slowly clockwise until the spool begins to freewheel.
Continue to adjust clockwise until the line setter reaches its set speed.
Further continued setting of the line may require the counter-balance to be rotated a little more clockwise and as the
spool diameter decreases. Usually a compromise setting can be found that runs smoothly with good~braking for the
entire set.
The further clockwise setting of the counterbalance will freespool with less line setter pull, but also with less braking
for slow down and stop.
Page 4
