COVER 7J0097 - Caterpillar

"LOWER"
The "Lower" message appears if the bucket is stopped or if the bucket is travelling down in the weigh range. This message will guide the operator in order to lower the bucket enough so that an accurate weight can be achieved. PCS will not calculate a weight if the operator attempts to start the lift while the "Lower" message is displayed on the screen."RE-DO"
The "RE-DO" message appears when lift speed is too low. In general, this message only appears during an abnormal lifting condition such as the operator trying to lift at low idle.When the "RE-DO" message appears, the operator should lower the bucket to a point below the start range and repeat the lift."REW-1"
The "REW-1" message appears if the bucket stops moving during the Start-of-Lift Range or if the bucket stops moving during the Weigh Range. Generally this occurs because the operator does not pull the lever back into detent. The operator then releases the lever before the bucket has traveled completely through the weigh range.When the "REW-1" message appears, the operator should lower the bucket and then perform a smooth and steady lift. To achieve a smooth and steady lift, the operator must maintain a constant engine speed and keep the lift lever in the detent position. It is also important to press the Reweigh button before performing a Reweigh. If the Reweigh button is not pressed before performing a Reweigh, PCS will count the lift twice. The Reweigh button is located above the "2" on the keypad and is marked "REW"."REW-2"
The "REW-2" message appears when machine motion (or bounce) cause pressure spikes that will cause inaccuracies in the payload. The SKEW software identifies excessively noisy lifts and flags these lifts as potential problems. For a discussion of potential pitfalls and appropriate corrective action, refer to a discussion of SKEW in the Menu Section of this Instruction.When the "REW-2" message appears, the operator should perform the following steps:
Lower the bucket to the ground.
Press the "REW" key.
Hold the engine speed at a constant RPM.
Ease the lift handle back into detent.
Repeat the lift."REW-3"
The "REW-3" message appears when the lift speed changes by more than the lift speed threshold. This typically occurs because the operator lowered the engine speed during the lift in order to avoid running into the truck. "REW-2" and "REW-3" work together to monitor most errors that occur during the lift range.When the "REW-3" message appears, the operator should perform the following steps:
Lower the bucket to the ground.
Press the "REW" key.
Hold the engine speed at a constant RPM.
Ease the lift handle back into detent.
Repeat the lift."REW-4"
The rare "REW-4" error occurs when the travel time through the weigh range is so long that it overruns the memory. PCS can handle a lift that requires as long as six seconds to pass through the weigh range. On a wheel loader, a lift that requires six seconds to pass through the weigh range occurs very infrequently. This error remains for special situations and for debugging purposes.When the "REW-4" error