BELT TENSIONER GP 3505689 - Caterpillar

Table 1
Feature     Description    
ET AutoCal     Fill calibration available on all eight clutches. Smoother shifting and better power transfer.    
Shift Torque Management     Feature limits torque during a shift, increases torque after the shift. Ensures consistent power to the ground to minimize blade disruptions. Engine will lug back and shift duration will increase to limit shift harshness. Most noticeable on the double clutch shifts fourth to fifth forward and third to fourth reverse.    
Load Compensation     Provides smooth shifts under light load conditions and under heavy loads or rapid acceleration shifting will be more aggressive to provide requested machine power    
Oil Temperature Compensation     Transmission actively monitors transmission oil temperature to compensate for changes in oil properties. Software compensates for transmission oil temperature for consistent transmission performance    
Neutral Coast Protection     Protects the transmission from potential damage caused the high speed coasting in neutral. Clutch eight is commanded to engage to prevent clutch damage and auto engagement. The operator may notice a jerking in first to fourth forward and first to third reverse if coasting in neutral    
Engine Overspeed Protection     Limits engine speed to allow downshift to occur. Results in lower engine speed needed to perform a downshift    The above features will improve transmission durability and life, improve the ability to put power to the ground, more consistent shifting in varying operation conditions, and fewer calibrations to perform.Refer to the following list of recommendations to further improve shifting performance.
To improve shifting performance, all shifts above fourth forward and third reverse (roading gears) should be performed at or above 1600 RPM engine speed.
Using Throttle Hold Mode will improve shift smoothness and reduce shift variability.Additionally, the transmission inching pedal should be used for the following functions:
Allow smooth engagement when selecting your initial gear or during directional shifts.
Can be used during high controllability and maneuverability situations.
Used to disengage power to the wheels.The transmission inching pedal should not be used to make sequential upshifts or downshifts.
If shift performance is not acceptable with the above operational techniques, perform a "Fill Time for the Transmission Clutch – Calibration" and reevaluate.