TACHOMETER GP-ELECTRIC 7C1075 - Caterpillar

The Transmission Does Not Shift Smoothly
Possible Cause
The transmission oil level is lower than the specification.
Check the power train oil level. Refer to Systems Operation, Testing and Adjusting, "Visual Inspection".
Check Cat ET for faults related to speed sensors, temperature sensors, or the data link.
A data link fault is detected and reported by the ECM.
The transmission may require recalibration. Refer to Systems Operation, Testing and Adjusting, "Transmission - Calibrate".
Calibrate the transmission.
There is debris and damaged components in the transmission.
Inspect the oil filter for debris. Refer to Systems Operation, Testing and Adjusting, "Visual Inspection".
Determine the origin of the debris and repair the damaged components.
Change the oil in the power train and install a new oil filter.
The pressure of the oil in the transmission hydraulic control system may not be within the specification.
Test the pressures of the oil in the transmission hydraulic control system. Make any necessary repairs or adjustments. Refer to Systems Operation, Testing and Adjusting, "Power Train Pressures".The Transmission Hesitates During Shifting
Possible Cause
The wiring harness for the transmission may be damaged.
Check the wiring and check the connectors for damage. Refer to Systems Operation, Testing and Adjusting, "Visual Inspection".
Repair any damage that is found in the wiring harness or replace any loose connections that are found.
A data link fault is detected and reported by the ECM.
One or more modulating valves for the electronic clutch pressure control may not be functioning correctly.
Test the modulating valves for the electronic clutch pressure control. Refer to Systems Operation, Testing and Adjusting, "Modulating Valves (Electronic Clutch Pressure Control) - Test".
The pressure of the oil in the transmission hydraulic control system may not be within the specification.
Test the pressures of the oil in the transmission hydraulic control system. Make any necessary repairs or adjustments. Refer to Systems Operation, Testing and Adjusting, "Power Train Pressures".
Check Cat ET for faults related to speed sensors, temperature sensors, or the data link.
There is debris and damaged components in the transmission.
Inspect the oil filter for debris. Refer to Systems Operation, Testing and Adjusting, "Visual Inspection".
Determine the origin of the debris and repair the damaged components.
Change the oil in the power train and install a new oil filter.
The transmission oil level is outside the specification.
Check the transmission oil level. Refer to Systems Operation, Testing and Adjusting, "Visual Inspection".
The seals on the piston in the transmission clutch may be leaking.
Check the pressure of the oil in the clutch under full engagement. Refer to Systems Operation, Testing and Adjusting, "Modulating Valve (Electronic Clutch Pressure Control) - Test".
There may be damaged components in the clutches for the transmission.
Inspect the oil for debris. Refer to Systems Operation, Testing and Adjusting, "Visual Inspection".
Inspect the clutches for damage. Refer to Disassembly and Assembly, UENR2383, "Transmission Planetary - Disassemble and Assemble".
Check that the disks and the plates are within the specified dimensions. Refer to Disassembly and Assembly, UENR2383, "Transmission Planetary - Disassemble and Assemble".
Check the springs in the clutches. Refer to Service Manual, RENR6729, "Power Train Specifications" for the correct specifications for the springs in the transmission clutches.
In addition, other