Hydraulic System - Unverferth ROLLING HARROW 1245 Manual

Pull-Type Rolling Harrow 1245/1245D

Hydraulic System

NOTE: For plumbing diagram, refer to "Hydraulic Diagram 1". Refer to PARTS section for
hydraulic components detail listing.
Standard Single Hydraulic Operation
Proper valve function: On the raise cycle, the unit should raise completely then fold. On the
lower cycle, the unit will lower/unfold at the same time.
NOTE: It is recommend to adjust valves when hydraulic oil is at operating temperature.
NOTE: Recommended operating hydraulic flow is 8-15 gpm. Recommended operating hydraulic
pressure is greater than 2,200 psi.
Unit folds before raising completely: Reference pressure cartridge valve SQ1. Back off jam
nut. Use Allen Wrench turn valve clockwise ¼ turn at a time until the unit raises completely
then folds. Tighten jam nut.
Unit raises but does not fold: Reference pressure cartridge valve SQ1. Back off jam nut. Use
Allen Wrench turn valve counter-clockwise ¼ turn at a time until the unit raises completely
then folds. Tighten jam nut.
HYDRAULIC DIAGRAM #1
ITEM DESCRIPTION
1 Base Wheel Cylinder
2 Wing Fold Cylinder
3 Adapter 9/16-18 JIC Male x 3/4-16 O-Ring Male
4 Adapter 9/16-18 JIC Male x 3/4-16 O-Ring Male
5 Split Function Sequence Valve
All hoses, cylinders, and fittings are rated for a minimum of 3000PSI. Any replacement components
must be rated for 3000PSI minimum.
— Maintenance
QTY NOTES
2 Cylinder 3 x 6
12' Base (3-6' Wings)
2 12' Base (10-11' Wings)
15' Base (3-7' Wings)
4 with 0.060 Restrictor
1
4-7