W T E C     I I I     E L E C T R O N I C     C O N T R O L S     T R O U B L E S H O O T I N G     M A N U A L 0011 00–125 APPENDIX B — CHECKING CLUTCH AND RETARDER PRESSURES C. Comparing Recorded Data to Specifications 1.   Be sure that engine speed and transmission sump fluid temperatures were within the values specified in Table B–1. 2.   Compare the main pressure and clutch pressure data, recorded in Step B, with the specifications in Table B–2. 3.   If clutch pressures are within specifications, return the transmission and vehicle to their original configuration and proceed with electrical troubleshooting. 4.   If clutch pressures are not within specification, take corrective action to replace the internal parts of the transmission necessary to correct the problem. (Refer to the Transmission Service Manual for the model being checked.) 5.   Recheck pressure values after the transmission has been repaired. 6.   Return the transmission to its original configuration. (Remove instrumentation and reinstall any components removed for the pressure testing.) MD 3070 — High Speed 2080–2120 71–93ºC (160–200ºF) Reverse Neutral LowC 1C 2C 2L 3L 4L 5L 6L C3 C5 C5 C3 C6 C1 C5 C1 C4 C1 C4 LU C1 C3 LU C1 C2 LU C2 C3 LU C2 C4 LU HD/B500 — High Speed 1780–1820 71–93ºC (160–200ºF) Reverse Neutral LowC** 1C 2C 2L 3L 4L 5L 6L C3 C5 C5 C1 C6 C1 C5 C1 C4 C1 C4 LU C1 C3 LU C1 C2 LU C2 C3 LU C2 C4 LU ** Only applies to HD 4070. Table B–1.  Clutch Pressure Test Conditions (Continued) Transmission Model/ Test Type Engine rpm Sump Fluid Temperature Range Clutches Pressurized