TUBE AS 3086926 - Caterpillar

Hydraulic Screed Counterbalance System (If Equipped)
The hydraulic screed counterbalance applies hydraulic pressure to the rod end of the screed lift cylinders. The screed counterbalance does the following:* Eliminates or decreases the settling mark made by the screed in some tender mixes.* Transfers weight from the screed to the paver to provide additional traction.* Reduces pressure on the screed plates which minimizes wear.
Typical ExampleAn adjustable relief valve controls hydraulic pressure for the counterbalance system. With the valve turned out fully counterclockwise, the rod end pressure in the screed cylinder (indicated by the gauge) should be about 345 kPa (50 psi).If there are mat problems due to screed settling, turn the valve clockwise and increase pressure in increments of 345 kPa (50 psi). After each increment of adjustment, check the mat to see if the desired results are being obtained. If pressure is increased above 1380 kPa (200 psi), mat density may be affected.
Hot wire (1), factory connection (2), two-way solenoid (3), three stack valve (4), and screed valve (5).If a full floating screed is desired, disconnect the counterbalance control wire. Disconnect the hot wire at the two-way solenoid and connect it to the solenoid that lowers the screed.
Do not connect the counterbalance and screed lower solenoid to the two-way solenoid at the same time. This could cause electrical damage to the screed circuit.
Machine Stopping
Park on a level surface. If it is necessary to park on a grade, block the tracks securely. 1. Move speed selection control (7) to the SLOW position.2. Move propel range switch (3) to the LOW position.3. Move power switch (6) on both operator consoles to the STOP position to stop the machine.4. Move park brake switch (5) to the ON position.5. Use switches (2) and (8) to lower the screed to the tow arm supports or blocks, and the hopper wings to their lowest point.
If it is necessary to leave the hopper wings raised, secure the wings together with a chain attached to the eyes in the wings, to avoid possible personal injury.
6. Move steering mode switch (1) to the PAVE position.7. Hold engine speed switch (4) to the SLOW position until the engine is at low idle. Release the switch.Engine Stopping
Stopping the engine immediately after it has been working under load, can result in overheating and accelerated wear of the engine components.Follow the stopping procedure outlined below, to allow the engine to cool, and to prevent excessive temperatures in the turbocharger center housing, which could cause oil coking problems.
1. Before stopping the engine, operate it at low idle for five minutes with no load. This allows hot areas in the engine to cool gradually, extending engine life. 2. Turn the engine start switch to OFF and remove the key.3. Be sure all controls are in OFF, or their proper positions for parking the machine.Leaving the Machine
1. Use the steps and handholds, use both hands and face the machine, when dismounting.2. Inspect the engine compartment for debris. Clean out any debris and paper to avoid