HARNESS AS-WIRING 1338389 - Caterpillar

Main Screed
Illustration 1 g00790187
Raise the screed. Install the tow point cylinder pins.
The screed must be at the null point before you work on the screed plates. Lower the screed on a flat surface.
Illustration 2 g00790188
Turn the thickness controls to the null position. Turn the thickness controls until you feel slack in the controls. The controls will turn easily with no drag when the controls are in the null position. Check both controls for null.
Illustration 3 g00790190
Set the crown control at the zero position.
Illustration 4 g00790192
Remove the guard for the crown assembly.
Illustration 5 g00790193
Locate the master link for the chain. Remove the master link and remove the chain.
Illustration 6 g00790194
The crown assemblies must be at the null point.
Raise the screed.
Illustration 7 g00790197
Set the sixteen trailing edge adjusters at a distance of 1/4 inch from the edge of the mainframe. This will establish a common reference point.
Illustration 8 g00790198
Place a straight edge along the trailing edge of the screed. There must be no screed crown when you adjust the screed.Note: If you use a straight edge that is shorter than the width of the plate, begin measuring and begin adjusting in the middle of the plate. After you level the center of the plate, adjust the left side of the plate. Then adjust the right side of the plate. After you complete this sequence, check the plate again. Start in the middle to ensure that the adjustments did not affect the other parts of the plate.
Check the flatness of the screed plate by measuring the gap between the screed plate and the straight edge. If the trailing edge is not flat within 0.75 mm (0.030 inch), adjust the 16 trailing edge adjusters downward until the plate contacts the level and you have the alignment that is desired.
Install the chain for the crown control. Install the master link for the chain.
Install the chain guard for the crown.Extender
Illustration 9 g00791267
Remove the top covers of the extender.
Remove the access covers from the top of the extender. Remove the access covers from the front of the extender. This will expose the front edge of the screed plate for the extender.
Illustration 10 g00790202
Locate the studs on the front of the extender plates. Remove the jam nuts.
Illustration 11 g00790205
Extend the extender all the way. Place a level on the outside edge of the main plate and the inside edge of the extender plate. Observe the gap between the level and the trailing edge of the extender plate.
Adjust the trailing edge adjuster downward until the plate contacts the level.
Retract the extender until the next trailing edge adjuster is above the level.
Observe the gap between the level and the trailing edge of the extender plate. Adjust the trailing edge adjuster downward until the plate contacts the level.
Perform this procedure on the remaining adjusters.
Extend the extender and retract the extender. Observe the clearance between the trailing edge of the extender and the level.
When you extend the extender, the screed plate should follow a true parallel path to the level.