- Bucket cylinders Measure the time it takes to roll in the bucket, and the time it takes to roll out the bucket. To do so, position the bucket at one stroke end, then move the control lever to the other stroke end as quickly as possible. Repeat each measurement 3 times and calculate the average values. - (4) Evaluation The average measured time should meet the following specifications. Unit : Seconds 7-12 Model Function Standard Maximum allowable Remarks R800LC-7A Boom raise 5.3Ü0.4 6.3 Boom lower 4.5Ü0.4 5.3 Arm in 4.6Ü0.4 5.5 Arm out 3.8Ü0.3 4.6 Bucket load 4.2Ü0.4 5.0 Bucket dump 3.9Ü0.3 4.7