Great Plains V-300F Operator Manual - Manual (Page 106)

102 V300 & V300F Great Plains Manufacturing, Inc.
148-057M-A 11/15/2007
Leaf Spring Adjustment
Refer to Figure 114
A leaf spring is located just ahead of the vertical pivot.
The spring is designed to provide just enough force to
keep the hitch square and stable for turning at field ends
and to add stability for drilling in rough field conditions.
Proper leaf-spring adjustment is important for smooth
implement operation.
To adjust properly, square tongue with transport frame,
adjust
3 ⁄
8
inch U-bolts on each side until leaf-spring
rollers just make contact with roller pads on trans-
port frame.
Chain Maintenance
Inspect and lubricate chains regularly. The slack of new
chains tends to increase during the first few hours of
operation due to seating. Check slack within the first 8
hours of operation and tighten idlers as necessary.
Refer to Figure 115, which, for clarity, greatly exaggerates
slack, and omits the idlers.
1.
Measure the span for allowable slack:
Locate the longest span of each chain (usually the
span which does not run through the idlers). The
ideal slack is between 2% and 4% of the span.
For example:
A slack of 1cm is appropriate for a 30cm span.
2. Measure the current slack :
Acting at a right angle to the chain span at the center
of the span, deflect the chain in both directions with a
force of about 4kg (9 lbs).The slack is the distance of
the movement.
3. Adjust the idlers for ideal slack.
Whenever mounting a chain, make sure the clip at the
removable link is oriented to minimize snags.
Refer to Figure 116
Install clip with open end facing away from direction of
chain travel (shown by gray arrows in chain routing dia-
grams).
Figure 114
Leaf Spring Adjustment
22619
1
2
3
1
2 3
Figure 115
Measuring Chain Slack
27264
2
1
1
Figure 116
Chain Clip Orientation
26482
2