Fastener Tightening Specifications
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Control Module Cover to Radiator Shroud Bolts | 9 N.m | 80 lb in |
| Control Valve Assembly to Main Housing Bolts | 12 N.m | 108 lb in |
| Converter Housing to Front Support Assembly Bolts | 56 N.m | 41 lb ft |
| Detent Lever Retaining Nut | 29 N.m | 21 lb ft |
| Detent Spring Assembly to Main Valve Body Bolts | 12 N.m | 108 lb in |
| Filler Tube Bracket to Transmission Nuts | 18 N.m | 13 lb ft |
| Fuel Line Bracket to Transmission Nut | 18 N.m | 13 lb ft |
| Fuel Line Retainer to Transmission Bolts | 2.5 N.m | 22 lb in |
| Heat Shield to Transmission Bolts | 17 N.m | 13 lb ft |
| Heat Shield to Transmission Nut | 25 N.m | 18 lb ft |
| Hydraulic Connector Assembly | 25 N.m | 18 lb ft |
| Input Speed Sensor to Torque Converter Housing Bolt | 12 N.m | 108 lb in |
| Main Pressure Tap Plug | 12 N.m | 108 lb in |
| Oil Cooler Line Clip to Oil Pan Nut | 9 N.m | 80 lb in |
| Oil Cooler to Radiator Brace Bolts | 12 N.m | 106 lb in |
| Oil Pan Drain Plug | 35 N.m | 26 lb ft |
| Oil Pan to Main Housing Bolts | 27 N.m | 20 lb ft |
| Output Speed Sensor to Rear Cover Bolt | 12 N.m | 108 lb in |
| Park/Neutral Position (PNP) Switch to Main Housing Bolts | 27 N.m | 20 lb ft |
| Power Take-Off (PTO) Cover to Main Housing Bolts | 43 N.m | 32 lb ft |
| Shift Cable Bracket to Transmission Bolts | 25 N.m | 18 lb ft |
| Shift Cable Support to Steering Column Brace Bolt | 10 N.m | 89 lb in |
| Shift Lever to Shift Selector Shaft Nut | 24 N.m | 18 lb ft |
| Shipping Bracket to Torque Converter Housing Bolts | 27 N.m | 20 lb ft |
| Shipping Bracket to Torque Converter Lug Bolts | 27 N.m | 20 lb ft |
| Torque Converter Housing Inspection Cover to Transmission Bolts | 10 N.m | 89 lb in |
| Torque Converter to Flywheel Bolts | 60 N.m | 44 lb ft |
| Transmission Fluid Pressure Switch to Main Valve Body Bolts | 12 N.m | 108 lb in |
| Transmission Mount to Adapter Bolts (4WD) | 47 N.m | 35 lb ft |
| Transmission Mount to Transmission Bolts (2WD) | 50 N.m | 37 lb ft |
| Transmission Mount to Transmission Support Nuts | 40 N.m | 30 lb ft |
| Transmission Support to Frame Nuts and Bolts | 70 N.m | 52 lb ft |
| Transmission to Engine Studs and Bolts | 50 N.m | 37 lb ft |
| Turbine Speed Sensor to Main Housing Bolt | 12 N.m | 108 lb in |
| Wire Harness/Vent Tube Bracket to Transmission Nut | 18 N.m | 13 lb ft |
| Yoke Assembly to Output Shaft Bolt | 123 N.m | 91 lb ft |
Fastener Tightening Specifications
Torque Converter Specifications
| Torque Converter Condition | Maximum Allowable End Play |
|---|---|
| New | 0.762 mm (0.030 inch) |
| Used | 1.015 mm (0.040 inch) |
Torque Converter End Play Specifications
| Measurement | Allowable Wear Limits |
|---|---|
| Minimum OD of Hub - Bushing Wear Area | 58.250 mm (2.2933 inch) |
| Minimum Distance Between Hub Flats | 51.691 mm (2.0351 inch) |
| Minimum OD of Cover Pilot | 43.16 mm (1.699 inch) |
Torque Converter Wear Limits Specifications
Transmission General Specifications
| Name | Allison 1000 Series |
|---|---|
| First Range Ratio | 3.10:1 |
| Second Range Ratio | 1.81:1 |
| Third Range Ratio | 1.41:1 |
| Fourth Range Ratio | 1.00:1 |
| Fifth Range Ratio | 0.71:1 |
| Reverse Range Ratio | 4.49:1 |
| Transmission Fluid Type | DEXRON® III |
| Maximum Gross Combined Weight (GCW) | 11 800 kg (26,000 lb)* |
| Maximum Gross Vehicle Weight (GVW) | 9 000 kg (19,850 lb)* |
| * Or Vehicle Manufacturers Chassis Rating, whichever is less | |
Transmission General Specifications
Fluid Capacity Specifications
| Condition | Liters | Quarts |
|---|---|---|
| (approximate) | ||
| Fill After Rebuild | 12.0 | 12.7 |
| Fill After Fluid and Filter Change | 7.0 | 7.4 |
Fluid Capacity Specifications
Torque Converter Replacement
Tools Required
- J 21366 Converter Holding Strap
- J 46409 Torque Converter Lifting Handles. See «Special Tools and Equipment»(ref-184163-S11405953682005082200000) .
- J 44723 Transmission/Stand Adaptor Plate
Scheme 254
Scheme 255
- Remove the transmission from the vehicle. Refer to «Transmission Replacement (With 6.6L Engine)»(ref-184163-S04712463932005082200000) or «Transmission Replacement (With 8.1L (L18) Engine)»(ref-184163-S06449248852005082200000) .
- Install J 21366 to restrain the torque converter.
- Install J 44723. Refer to Holding Fixture Installation.
- Position the transmission vertically with the torque converter end up.
- Remove J 21366 torque converter retaining bracket.
- Measure from the mounting lugs to the transmission mounting face.
- Install J 46409 180 degrees apart into 2 lugs on the front of the torque converter.
- Lift the torque converter free of the transmission and place it on the work table.
- Remove the lifting handles.
Torque Converter
Several torque converters are available to match the transmissions to a wide variety of diesel and gasoline engines. The torque converter is a single-stage, polyphase, and three-element unit, consisting of a pump, stator, and turbine. At lower output speeds, the torque converter multiplies torque and provides a fluid coupling to the engine. At higher speeds, the torque converter clutch (TCC) is automatically engaged to provide direct drive from the engine to the transmission. Hydraulic fluid for converter charging pressure comes from the sump and is supplied by the input pump. The torque converter clutch is applied or released by changing direction of fluid in the torque converter. An integral converter damper minimizes the need for additional engine vibration control.
Throttle Position/Torque Management
The TCM receives input on throttle position/torque management, from a signal transmitted by the engine electronic controls.
The engine electronic controls communicate directly to the transmission electronic controls over an SAE J1850 or J1939 serial communication interface (SCI) data link. The transmission TCM must be calibrated to receive these signals.
Scheme 256
| IMPORTANT | Do not rotate the sensor in the retaining bracket. Changing the sensor/bracket orientation may cause improper operation. |
There are three speed sensors typically required for use with 1000 Series transmissions. They include the engine speed sensor, the turbine speed sensor, and the output speed sensor. The speed sensors provide RPM information to the TCM. The speed ratios between the various sensors allow the TCM to determine the transmission operating range. Speed sensor information is also used to control the timing of clutch apply pressures, resulting in the best possible shift quality. Hydraulic conditions are detected by comparing the speed sensor information, for the current range, to the range of the speed sensor information stored in TCM memory. The speed sensors are variable reluctance devices that convert mechanical motion to an AC voltage. Each sensor consists of a wire coil wrapped around a pole piece that is adjacent to a permanent magnet. These elements are contained in a housing that is mounted adjacent to a rotating ferrous member.
Scheme 257
The vehicle is equipped with a column type shift selector. In addition to the column shifter, another component associated with the shift selector is the park/neutral position (PNP) switch mounted on the selector shaft. The PNP switch transmits selector position information to the TCM. The PNP switch mounts directly onto the transmission housing, from the outside, and detects the angular position of the shift selector shaft. This position is communicated to the TCM so that certain vehicle control functions can be coordinated with the position of the shift controls. The PNP switch has redundant circuitry to alert the TCM in the event of a single wire or switch failure. The neutral signal output of the PNP switch is typically used as confirmation that the transmission is in NEUTRAL before the engine starter is engaged. The PNP switch is interfaced to the starter circuit with weatherproof electrical connectors. The reverse signal provision may be used to activate the vehicle back-up lights and/or reverse warning devices. The shift selector and PNP switch are customer supplied.
The operator chooses the transmission range by moving the selector lever to the appropriate gate position. When properly adjusted, the shifter gates prevent inadvertent shifting between ranges, and correspond to the internal transmission detent positions. A positive detent is provided in the transmission in order to maintain the selector shaft in the selected position.
The TCM shift calibration determines the available forward ranges for each selector position. Although specific installations vary, typical selector positions for the 1000 Series include the following