BOLT 2982764 - Caterpillar

Transmission Clutch Engagement
Illustration 1 g02622327
Modulating Valves (Transmission Control Valves)
Table 1
Clutch Clutch Designation
1 C
2 D
3 E
4 F
5 G
6 B
7 H
8 J
9 A Each transmission control valve has a designated letter, as shown. The letters have been cast into the transmission housing.Each transmission control valve controls an individual clutch. Each letter is assigned to a corresponding transmission control valve. See Illustration 1.These letters are used in Table 2 to show the clutches that are engaged for each gear.No more than two clutches are ever engaged at a time. Also, no more than one clutch is ever engaged on a shaft.
Table 2
Transmission Clutch Engagement
Engine RPM at 2100
Gear Reverse
Shaft Input
Shaft Intermediate
Shaft Output
Shaft
Fourth gear (reverse) A - - J
Third gear (reverse) A - - H
Second gear (reverse) A - - B
First gear (reverse) A - - G
Neutral - - - J
First gear - C - G
Second gear - D - G
Third gear - - E G
Fourth gear - - F G
Fifth gear - C - B
Sixth gear - C H
Seventh gear - D - B
Eighth gear - D - H
Ninth gear - - E B
Tenth gear - - E H
Eleventh gear - - F B
Twelfth gear - - F H
Thirteenth gear - C - J
Fourteenth gear - D - J
Fifteenth gear - - E J
Sixteenth gear - - F J Problem List
The following problems are covered in this story:
"The Tractor Does Not Move in Any Gear"
"The Transmission Does Not Shift Into All of the Gears"
"A Warning Event for Replacing the Transmission Oil Filters is Displayed in (Cat ET)"
"The Transmission Shifts Too Hard"
"A Warning Event for Low Transmission Oil Pressure is Displayed on the (Cat ET)"
"A Warning Event for Elevated Transmission Oil Temperature is Displayed on the (Cat ET)"
"The Transmission Locks Into One Gear"
"The Transmission Slips"
"Inching Control Does Not Work Properly"The Tractor Does Not Move in Any Gear
Check the Caterpillar Electronic Technician (Cat ET) for diagnostic codes. Reference: See the appropriate sections in this manual that relate to the diagnostic codes. Repair any suspect components, as required.
Check the sump for the correct type of oil and check the sump for the correct quantity of oil. Reference: Refer to the Operation and Maintenance Manual, SEBU8672 for additional information.
Perform the calibration procedure for the transmission clutches. Reference: Refer to Testing and Adjusting, "Transmission Clutch Calibration" for additional information.
Repair any problems that are found in the calibration procedure. Note: Operate the tractor. If the transmission does not function properly, continue with Step 5.
Perform the pressure tests for the transmission. Reference: Refer to Systems Operation/Testing and Adjusting for additional information.
Repair any failed components that are found while you perform the pressure tests. The Transmission Does Not Shift Into All of the Gears
Check for diagnostic codes. Reference: See the appropriate sections in this manual that relate to the diagnostic codes. Repair any suspect components, as required.
Check the reservoir for th