Nag1 Automatic Transmission (Service Information): Assembly: Assembly
If the transmission is being reconditioned (clutch/seal replacement) or replaced, it is necessary to perform the TCM Adaptation Procedure using the scan tool. Refer to MODULE, TRANSMISSION CONTROL, STANDARD PROCEDURE .
| 1 - THRUST BEARING NO. 1 | 6 - THRUST BEARING NO. 6 |
| 2 - THRUST BEARING NO. 2 | 7 - ROLLER BEARING NO. 7 |
| 3 - THRUST BEARING NO. 3 | 8 - THRUST BEARING NO. 8 |
| 4 - THRUST BEARING NO. 4 | 9 - ROLLER BEARING NO. 9 |
| 5 - THRUST BEARING NO. 5 |
| 1 - SNAP-RING | 5 - PARK GEAR |
| 2 - HOLDING CLUTCH B3 DISCS | 6 - TRANSMISSION HOUSING |
| 3 - SPRING WASHER | 7 - BOLTS - M8X60 |
| 4 - HOLDING CLUTCH B2 |
- Insert parking lock gear (5). Refer to Fig 2.
- Install multiple-disc holding clutch B2 (4) in transmission housing (6). Refer to Fig 2.
- Screw in both Torx® socket bolts (7). Tighten the bolts to 16 N.m (141 in.lbs.).
1 - OUTER DISC - 6.5 MM (0.256 IN.) 5 - PISTON 2 - OUTER DISCS - 1.8 MM (0.071 IN.) 6 - FRICTION DISCS 3 - OUTER DISCS - 1.8 MM (0.071 IN.) 7 - SNAP-RING 4 - SPRING WASHER 8 - B3 DISC CARRIER NOTE:During the measurement the snap ring (7) must contact the upper bearing surface of the groove in the outer multiple-disc carrier (8). Refer to Fig 3.
NOTE:Pay attention to sequence of discs. If the original clutch discs are reused, be sure to return the disc identified on disassembly as belonging on top of the spring washer (4) to its original location. Place new friction multiple-discs in ATF fluid for one hour before installing.
CAUTION:Apply only light pressure (less than 10 N (3 lbs.) of force) to the clutch pack when measuring the clutch clearance with the feeler gauge. Applying excessive force to the clutch will give an incorrect reading and lead to a transmission failure.
- Insert and measure spring washer (4) and multiple-disc pack B3 (2, 6). Refer to Fig 3.
- Put multiple-discs for multiple-disc holding clutch B3 together in the sequence shown in the illustration and insert individually.
- Using a feeler gauge, determine the play "L" at three points between the snap ring (7) and outer multiple-disc (1). B3 clutch clearance should be 1.0-1.4 mm (0.039-0.055 in.). Adjust the clearance as necessary.
- Adjust with snap-ring (7), if necessary. Snap-rings are available in thicknesses of 3.2 mm (0.126 in.), 3.5 mm (0.138 in.), 3.8 mm (0.150 in.), 4.1 mm (0.162 in.), 4.4 mm (0.173 in.), and 4.7 mm (0.185 in.).
1 - K1 CLUTCH FEED HOLE - Check that the K1 clutch feed hole (1) in the inner hub of clutch B1 is free before installing clutch B1. Refer to Fig 4.
1 - BOLTS - M6X32 4 - BOLTS - M8X35 2 - CONVERTER HOUSING 5 - HOLDING CLUTCH B1 3 - INTERMEDIATE PLATE 6 - OIL PUMP - Place intermediate plate (3) on converter housing (2) and align.NOTE:
The intermediate plate can generally be used several times. The plate must not be coated with additional sealant
- Install the holding clutch B1 (5) onto the converter housing and intermediate plate. Refer to Fig 5. Installed position of clutch B1 in relation to converter housing is specified by a plain dowel pin in clutch B1 (arrow).
- Install the bolts to hold clutch B1 (5) to the converter housing. Refer to Fig 5.
- Securely tighten multiple-disc holding clutch B1 (5) on converter housing (2) to 10 N.m (89 in.lbs.).
1 - INNER OIL SEAL 2 - OUTER OIL SEAL - Install new torque converter hub seal (1) into the oil pump using Seal Installer (special tool #8902A, Installer, Seal). Refer to Fig 6.
- Install new oil pump outer o-ring seal onto oil pump. Refer to Fig 6.
1 - DRIVING CLUTCH K1 5 - THRUST WASHER 2 - SUN GEAR OF FRONT PLANETARY GEAR SET 6 - FRONT PLANETARY GEAR SET, DRIVING CLUTCH K2, AND INPUT SHAFT 3 - DRIVING CLUTCH K3, OUTPUT SHAFT, AND CENTER AND REAR PLANETARY GEAR SETS 7 - SEALING RINGS 4 - THRUST NEEDLE BEARING - Install oil pump (6) and securely tighten. Tighten the oil pump bolts to 20 N.m (177 in.lbs.).
- Using grease, insert sealing rings (7) in the groove so that the joint remains together. Refer to Fig 7.
- Install the K1 (1) clutch onto the B1 clutch. Refer to Fig 7.
- Install input shaft with clutch K2 (6) and front gear set (1). Refer to Fig 7.
- Install front washer (5) and thrust needle bearing (4). Refer to Fig 7.NOTE:
Insure that the pinion gears are fully seated in the Rear Annulus (Hollow) Gear. If 50% of the pinion gear splines protrude, the Rear Annulus Gear was installed upside down in the K2 Clutch Retainer.
- Install output shaft with center and rear gear set and clutch K3 (3). Refer to Fig 7.
1 - GAUGE BAR 6311 2 - PARK GEAR - Using grease, install both Teflon rings in the groove at the rear of the output shaft so that the joint stays together.
- Mount transmission housing on converter housing.
- Screw in Torx® socket bolts through the transmission housing into the converter housing. Tighten the bolts to 20 N.m (177 in.lbs.).NOTE:
Verify that there are no nicks or other irregularities in the surface of the transmission case that will cause an inaccurate measurement.
- Measure end-play between park pawl gear and grooved ball bearing in order to select the proper geartrain end-play shim.
- Place Gauge Bar (special tool #6311, Gauge Bar) (1) on transmission housing. Using a depth gauge, measure from the gauge bar (1) to the parking lock gear (2). Refer to Fig 8.
Courtesy of CHRYSLER GROUP, LLC
1 - GAUGE BAR 6311 2 - OUTPUT SHAFT BEARING CONTACT SURFACE - Using a depth gauge, measure from the Gauge Bar (special tool #6311, Gauge Bar) (1) to the contact surface of the output shaft bearing (2) in the transmission housing. Refer toFig 9.
- Subtract the first figure from the second figure to determine the current end-play of the transmission. Select a shim or a combination of two shims such that the end-play will be 0.3-0.5 mm (0.012-0.020 in.). Shims are available in thicknesses of 0.2 mm (0.008 in.), 0.3 mm (0.012 in.), 0.4 mm (0.016 in.), and 0.5 mm (0.020 in.).
- Install the selected end-play shim.
1 - BEARING INSTALLER 9287 2 - BEARING 3 - TRANSMISSION CASE - Screw in Torx® socket bolts through the converter housing into the transmission housing. Tighten the bolts to 20 N.m (177 in.lbs.).
- Install output shaft bearing (2) in rear transmission housing. Using Bearing Installer (special tool #9287, Installer, Bearing) (1), install the output shaft bearing (2) into the transmission housing. Refer to Fig 10. The closed side of the plastic cage must point towards the parking lock gear.
1 - RETAINING RING 2 - OUTPUT SHAFT BEARING - Install the retaining ring (1). Refer to Fig 11. Ensure that the retaining ring is seated correctly in the groove.
- Check that there is no play between the bearing and the retaining ring using feeler gauge.
- There must be no play between the retaining ring and the bearing. If the ring cannot be installed, a thinner ring must be used. If there is play between the ring and the bearing, a thicker ring must be installed. Retaining rings are available in thicknesses of 2.0 mm (0.079 in.), 2.1 mm (0.083 in.), and 2.2 mm (0.087 in.).
1 - TOOL 8266-8 2 - TOOL 8266-18 3 - TOOL C-3339A - Rotate the transmission so that the bellhousing is pointed upward and ensuring that the output shaft is allowed to move freely.
- Measure input shaft end-play. Refer to Fig 12.NOTE:
If end-play is incorrect, transmission is incorrectly assembled, or the geartrain end-play shim is incorrect. The geartrain end-play shim is selective.
NOTE:If necessary, a combination of shims can be used to achieve the required end-play.
- Attach Adapter (special tool #8266-18, Spline Tool, NAG1) (2) to Handle (special tool #8266-8, Handle) (1).
- Attach dial indicator (special tool #C-3339A, Set, Dial Indicator) (3) to Handle (special tool #8266-8, Handle) (1).
- Install the assembled tool onto the input shaft of the transmission and tighten the retaining screw on Adapter (special tool #8266-18, Spline Tool, NAG1) to secure it to the input shaft.
- Position the dial indicator plunger against a flat spot on the oil pump and zero the dial indicator.
- Move input shaft in and out and record reading. End play should be 0.3-0.5 mm (0.012-0.020 in.). Adjust as necessary.
1 - SEAL INSTALLER 8902A 2 - TRANSMISSION CASE NOTE:The output shaft shim should be 0.3 mm (0.012 in.). If a 0.3 mm (0.012 in.) shim is not available, use a 0.2 mm (0.008 in.) 0.4 mm (0.016 in.) or 0.5 mm (.020 in.) shim.
- Install the output shaft shim onto the output shaft.
- Install a new transmission rear seal into the transmission case with Seal Installer (special tool #8902A, Installer, Seal) (1). Refer to Fig 13.
1 - PROPELLER SHAFT FLANGE 2 - STAKING TOOL 9078 3 - ALIGNMENT PIN 4 - OUTPUT SHAFT NOTCH - Place the transmission in PARK to prepare for the installation of the output shaft nut.
- Inspect the seal protector on the rear of the output shaft flange. Replace the seal protector if damaged. the seal protector can be removed using a suitable pry tool and installed with a suitable tube style tool.
- Install the propeller shaft flange onto the output shaft and install an new flange nut. Tighten the flange nut, with a 30 mm 12 point socket, to 200 N.m (147.5 ft.lbs.).
- Place the Staking Tool (special tool #9078, Staking Tool) (2) and Driver Handle (special tool #C-4171, Driver Handle, Universal) onto the output shaft.
- Rotate the Staking Tool (special tool #9078, Staking Tool) (2) until the alignment pin (3) engages the output shaft notch (4). Refer to Fig 14.
1 - STAKING TOOL 9078 2 - PROPELLER FLANGE 3 - STAKING PIN - Press downward on the staking tool (1) until the staking pin (3) contacts the output shaft nut flange (2). Refer to Fig 15.
- Strike the Driver handle (special tool #C-4171, Driver Handle, Universal) with a suitable hammer until the output shaft nut is securely staked to the output shaft.
1 - HEAT SHIELD 2 - ELECTROHYDRAULIC UNIT 3 - BOLT 4 - OIL FILTER 5 - OIL PAN 6 - CLAMPING ELEMENT 7 - BOLT 8 - 13-PIN PLUG CONNECTOR 9 - BOLT 10 - ADAPTER PLUG - Install electrohydraulic unit (2). Tighten the bolts to 8 N.m (71 in.lbs.).
- Install oil filter (4). Refer to Fig 16.
- Install oil pan (5). Refer to Fig 16. Tighten the bolts to 8 N.m (71 in.lbs.).
- Install the adapter plug (10). Refer to Fig 16. Tighten the bolt (9) to 2.5 N.m (22 in. lbs.).
1 - TORQUE CONVERTER 2 - CONVERTER HOUSING - Install the torque converter. Refer to Fig 17.
A unique transmission fluid has been developed for the 8HP45 transmission. This fluid is NOT compatible with ATF+4 or any other current Chrysler transmission fluid. For specifics about this unique fluid see FLUIDS, LUBRICANTS AND GENUINE PARTS. Refer to CAPACITIES AND RECOMMENDED FLUIDS, SPECIFICATIONS .
The Transmission Control Module (TCM), or Transmission Control Module Assembly (TCMA) is extremely sensitive to Electrostatic Discharge (ESD). Always use a ground strap and follow the ESD guidelines in ELECTROSTATIC DISCHARGE (ESD) SENSITIVE DEVICES. Refer to STANDARD PROCEDURE . Failure to follow these instructions may result in damage to the TCM/TCMA.
If the transmission is being reconditioned (clutch/seal replacement) or replaced, it is necessary to perform the TCM Adaptation Procedure. Refer to appropriate diagnostic information .
- Insert the P4 annulus (3) into the P4 annulus drum (2).
- Install the snap ring (1) into the P4 annulus drum (2).
- Install the P4 planetary carrier\output shaft (2) into the P4 annulus drum (1).
- Position the bearings on the top and the bottom of C clutch (1).
- Install the C clutch (1) into the P4 sun gear/C/E clutch retainer (2).
- Install the needle bearing (2) onto the E clutch (1).
- Install the E clutch (1) into the P4 sun gear/C/E clutch retainer (3).
- Install the snap ring (1) into the P4 sun gear/C/E clutch retainer (2).
- Install the P3 annulus (1) into the P4 sun gear/C/E clutch retainer (2).
- Install the snap ring (1) into the P4 sun gear/C/E clutch retainer (2).
- Install the P4 sun gear/C/E clutch retainer (1) into the D clutch drum (2).
- Install the needle bearing onto the planetary carrier.
- Install the P3 planetary carrier (2) in the D clutch drum.
- Install the snap ring (1).
- Install the D clutch drum (1) into the P4 annulus drum (2).
- Install the P2 annulus\P3 sun gear (1) onto the drum assembly (2).
- Install the needle bearing (2) and washer.
- Install the input shaft with P2 planetary carrier (1) into the drum assembly.
- Install P1/P2 sun gear into the bottom of the P1 planetary carrier (3).
- Install the P1 planetary carrier (3).
- Install the snap ring (1).
- Install the needle bearing and holding plate (2) onto the P1 planetary carrier.
- Install the selectable shim to the P1 annulus/B clutch hub.
- Install the P1 annulus\B clutch hub assembly (1) onto the P4 annulus drum.
- Install the O-ring and five squared O-rings.
- Install the clutch pack (2).
Courtesy of CHRYSLER GROUP, LLC
NOTE:The (special tool #10373, Installer, Output Needle Bearing/Rear Oil Dam) (3) is a combination tool that is reversed to install the oil dam and output shaft inner needle bearing. For use to install the output shaft inner needle bearing, use the thick walled side (2) of the tool against the bearing.
- Using (special tool #10373, Installer, Output Needle Bearing/Rear Oil Dam) (3) and (special tool #C-4171, Driver Handle, Universal) (1), install the output shaft inner needle bearing.
- Install the snap ring.
Courtesy of CHRYSLER GROUP, LLC
NOTE:The (special tool #10373, Installer, Output Needle Bearing/Rear Oil Dam) (3) is a combination tool that is reversed to install the oil dam and output shaft inner needle bearing. For use to install the oil dam, use the thin walled side (2) of the tool against the oil dam.
- Using (special tool #10373, Installer, Output Needle Bearing/Rear Oil Dam) (3) and (special tool #C-4171, Driver Handle, Universal) (1), install the oil dam.
- Install the snap ring.
- Install the needle bearing (AWD) or ball bearing (RWD).
- Install the snap ring (1).
- Install the input/output shaft and P4 annulus drum assembly (1) into the case.
- From outside the transmission case, install the park pawl shaft and install the park pawl (1) and spring (2).
- Install the park pawl shaft plug (1) into the rear of the case and tighten to 35 N.m (26 ft. lb.).
- Using (special tool #6936, Spacer) (1), install the selector shaft seal (2).
- Install the shaft (4), spring (2), and fork (1) into the case.
- Install the roll pin into the selector shaft (4) using a suitable pin punch (3).
- Install the park pawl lock rod (1) onto the fork (2).
- Position the park pawl lock rod guide plate (2), install the three park pawl lock rod guide plate retaining screws (1) and tighten to 10 N.m (89 in. lb.).
- Install the oil pump cover lip seal (3) on the oil pump cover (2).
- Using (special tool #10375, Installer, Oil Pump Cover Oil Seal) (1), install the input shaft seal in the oil pump cover (2).
- Position the oil pump housing (2) and oil pump cover (3) together.
- Install the five bolts (1) and tighten to 5 N.m (44 in. lb.) plus 45°.
- Insert the piston and the retaining ring (1) into the housing.
- Position the oil pump housing assembly (4) in a suitable arbor press.
- Using (special tool #8285, Compressor, Spring) (1), press on the fingers of the piston retaining ring to remove tension, and install the two halves of the split retainer ring (2).
- Install the hub (3).
- Install the clutches and spacers (4).
- Install the snap ring (2).
- Install the outer ring (1) (below B-piston).
- Position the B-piston alignment tab (2) above the notch and install B-piston (1) on the assembly.
- Carefully position the oil pump housing assembly into the case.
- Install the new input shaft O-ring.
- Install the thirteen oil pump cover retaining bolts and tighten the oil pump cover as follows:
- In order to seat the oil pump cover properly, pre tighten bolts one, seven and nine to 6 N.m (53 in. lb.).
- Working in a clockwise pattern, beginning with number one, tighten to 10 N.m (89 in. lb.).
- Working in a clockwise pattern, beginning with number one, tighten an additional 90°.
NOTE:The manual park release lever (2) can be reversed to release tension and ease the installation of the valve body assembly.
- Temporarily install the manual park release lever (2) to release tension on the shift fork as follows:
- Install the manual shift shaft lever (2) 180 degrees offset from its original position.
- Install the nut (1) and hand tighten.
- Turn the manual park release lever (2) and using a tie strap (3), secure the lever (2) into position so the park release fork is in the same position as it was before valve body assembly removal.
- Install a new compression seal (3) into the transmission case.
- Install the fluid port (1) with new O-rings to the transmission case.
- Install the (special tool #10379, Pins, Valve Body Alignment) (1) in the transmission case as guides for the valve body assembly.NOTE:
Make sure the shift fork lines up properly.
- Using the valve body alignment pins (1) to guide, position the valve body assembly to the transmission.NOTE:
After several bolts have been hand tightened, remove the guide pins (1).
- Install the fourteen valve body assembly retaining bolts and hand tighten.
- Using (special tool #10377, Remover/Installer, Guide Sleeve) (1) carefully install the electrical harness insulator (2) into the transmission case (3).
- Install the sensor (4) and the sensor retaining bolt (1) and hand tighten.
- Latch the electrical connector insulator lock (2) by pushing in.
- Install the valve body assembly end retainer bolts (3) and hand tighten.
- Tighten the valve body assembly retaining bolts 1-18 in the sequence shown in illustration to 8 N.m (71 in. lbs.).
- Remove the tie strap and return the manual release lever (1) to the original position.
- Install the nut (2) and tighten to 10 N.m (89 in. lbs.).
- Position the oil pan and gasket.
- Install the thirteen oil pan retaining bolts and using the sequence shown in illustration and tighten to 10 N.m (89 in. lbs.).
NOTE:
AWD only.
CAUTION:The seal must be installed flush with the case. Driving the seal deeper could damage the seal causing a leak.
- Position the new output shaft seal (3) over the output shaft and against the transmission case.
- Using (special tool #8481, Installer, Gear) install the output shaft seal.
- Position the extension housing.
- Install the seven transmission housing extension bolts (2) and tighten to 27 N.m (20 ft. lbs.).
NOTE:
RWD only.
- Install the transmission output shaft washer.CAUTION:
The seal must be installed flush with the case. Driving the seal deeper could damage the seal causing a leak.
- Position the new output shaft seal (3) over the output shaft and against the transmission case.
- Using (special tool #8481, Installer, Gear) install the output shaft seal.
- Install the transmission rear dust seal (2).
- Install the propeller shaft flange (1).
- Install the new propeller shaft flange nut and washer using a 34 mm 12 point socket (3) and (special tool #C-3281, Holder, Flange) (2) to hold the flange (1). Tighten to 60 N.m (44 Ft. lbs.).
- Stake the nut.
- Install the torque converter (1). Refer to TORQUE CONVERTER, INSTALLATION .
- Before installing the transmission in the vehicle, pre-fill the transmission as outlined in FILL TRANSMISSION AFTER SERVICE. Refer to FLUID AND FILTER, STANDARD PROCEDURE .