66RFE Automatic Transmission - Assembly

ASSEMBLY

Special Tools:










NOTE: Apply trans jell or petroleum jelly to all slide portions, rolling contacts surfaces, thrust surfaces etc. to prevent burnout during initial operation. Lubricate O-rings and O-ring seals with MOPAR(R) ATF+4. Soak all friction disks in MOPAR(R) ATF+4 for at least two hours before assembly of clutch packs.

NOTE: Clean and inspect all components. Replace any components which show evidence of excessive wear or scoring.

NOTE: If the transmission assembly is being reconditioned (clutch/seal replacement) or replaced, it is necessary to perform the Quick Learn Procedure using the scan tool. TCM Quick Learn





1. Install a new selector shaft seal (1) using (8253) (2).





2. Install the manual selector shaft and retaining screw. Tighten the manual selector shaft retaining screw to 28 Nm (250 in.lbs.).
3. Install the manual shift lever (1) onto the manual selector shaft. Torque the retaining cross-bolt to 16 Nm (140 in.lbs.).





4. Install the park pawl (5), spring (4), and shaft (3).
5. Install the park rod (7) and e-clip.
6. Install the park rod guide (1) and snap-ring (2).





7. Install a new fill tube seal (2) using (8254) (1).




Figure 5 - THRUST BEARING ORIENTATION





CAUTION: A thrust bearing must be installed correctly or transmission failure may occur.

When installing a thrust bearing be certain the rolled surface (outer race) of the thrust bearing contacts the rolled surface of the component.

NOTE: The 66RFE transmission does not use a number 7 thrust bearing.




Figure 6 - 66RFE CROSS SECTIONAL








Figure 7 - 66RFE CLUTCH ORIENTATION










NOTE: Before final assembly of transmission centerline, the 2C/4C clutch components should be installed into position and measured as follows:

8. Install the 2C reaction plate (4) with the beveled edge down (rearward) into the transmission case.
9. Install the 2C clutch pack (2, 3) into the transmission case.
10. Install the flat 2C clutch snap-ring (1) into the transmission case.





11. Install the 4C retainer/bulkhead (2) into the transmission case. Make sure that the oil feed holes are pointing toward the valve body area.
12. Install the 4C retainer/bulkhead tapered snap-ring (1) into the transmission case. Make sure that the open ends of the snap-ring are located in the case opening toward the valve body area.
13. Using a feeler gauge through the opening in the rear of the transmission case, measure the 2C clutch pack clearance between the 2C reaction plate and the transmission case at four different points. The average of these measurements is the 2C clutch pack clearance. The correct clutch clearance is 0.99-1.65 mm (0.039-0.065 in.). The reaction plate is not selective. If the clutch pack clearance is not within specification, the reaction plate, all the friction discs, and steels must be replaced.
14. Remove the 4C retainer/bulkhead and all of the 2C clutch components from the transmission case.










15. Install the low/reverse clutch assembly (2). Make sure that the oil feed hole points toward the valve body area and that the bleed orifice is aligned with the notch in the rear of the transmission case.
16. Install the snap-ring (1) to hold the low/reverse clutch retainer into the transmission case. The snap-ring is tapered and must be installed with the tapered side forward. Once installed, verify that the snap-ring is fully seated in the snap-ring groove.
17. Air check the low/reverse clutch and verify correct overrunning clutch operation. Air Testing Transmission Clutch And Band Operation






18. Install the number 12 thrust bearing (3) over the output shaft and against the rear planetary gear set, the black side with the tabs goes towards the ORC. Install the number nine thrust bearing with the silver side against the reverse carrier and the black side facing towards the front of the transmission.
19. Install the number 9 thrust bearing (1), with the silver side against the reverse carrier and the black side facing out.
20. Install the reverse/input planetary assembly (2) through the low/reverse clutch assembly.





21. Install the park sprag gear (1) onto the output shaft.





22. Install the snap-ring (1) to hold the park sprag onto the output shaft.





23. Install the 2C reaction plate (4).
24. Install the 2C clutch pack (2, 3, 4) into the transmission case.
25. Install the flat 2C / 4C clutch retainer snap-ring into the transmission case.





26. Install the reaction planetary gear set.
27. Install the number 8 thrust bearing (4) into the reaction sun gear with the blue ink stripe against the sun gear with the inner race facing up.





28. Install the output shaft selective thrust plate (2) onto the 4C clutch hub with the oil grooves facing the hub and the lugs (1) and notches aligned as shown.





29. Install the number 6 thrust bearing (1) against the output shaft selective thrust plate (2) with the flat side against the thrust plate and the raised tabs on the inner race facing the front of the transmission.
30. Install the install the 4C clutch / reaction sun gear (3) into the reaction planetary gear set.





31. Install the 2C / 4C retainer/bulkhead (2) into the transmission case. Make sure that the oil feed holes are pointing toward the valve body area. Rotate the 4C clutch hub during the installation of the 4C retainer/bulkhead to ease installation.
32. Install the 2C / 4C retainer/bulkhead tapered snap-ring (1) into the transmission case with the taper toward the front of the case. Make sure that the open ends of the snap-ring are located in the case opening toward the valve body area.
33. Air check the 2C and 4C clutch operation. Air Testing Transmission Clutch And Band Operation




Figure 19 - Reaction Annulus and Carrier





NOTE: The output shaft end play is adjusted by means of a selectable bearing spacer (2) in front of the 4C clutch hub/reaction sun gear. The selectable bearing spacer thickness is identified by a numeric numeral molded or stamped into the spacer.





34. Using (10065), (8266-20) , handle from (8266B) (2) and (C-3339A) (3), measure and record the output shaft end-play. The correct output shaft end-play is 0.25-0.52 mm (0.010-0.020 in.). Adjust as necessary. Install the chosen output shaft selective bearing spacer and re-measure end-play to verify selection.

Output Shaft End Play Selectable Bearing Spacer Thickness
- 09 = 2.18 mm (0.086 in.)
- 10 = 2.33 mm (0.092 in.)
- 11 = 2.48 mm (0.098 in.)
- 12 = 2.63 mm (0.103 in.)
- 13 = 2.78 mm (0.109 in.)
- 14 = 2.69 mm (0.115 in.)
- 43 = 3.08 mm (0.121 in.)
- 16 = 3.23 mm (0.127 in.)
- 17 = 3.38 mm (0.133 in.)
- 18 = 3.53 mm (0.139 in.)
- 19 = 3.68 mm (0.145 in.)

35. Apply a bead of RTV silicone and install the extension/adapter housing onto the transmission case.
36. Install and torque the bolts to hold the extension/adapter housing onto the transmission case. The correct torque is 54 Nm (40 ft.lbs.).





37. Install the number 5 thrust bearing (1) and selective thrust plate (2) onto the input clutch assembly (3). Be sure that the outer race of the bearing is against the thrust plate.
38. Install the input clutch assembly (3) into the transmission case. Make sure that the input clutch assembly is fully installed by performing a visual inspection through the input speed sensor hole. If the tone wheel teeth on the input clutch assembly are centered in the hole, the assembly is fully installed.
39. Install the number 1 thrust bearing (4) with the outer race up in the pocket of the input clutch assembly.





40. Install the oil pump (2) into the transmission case making certain the oil pump is flush with the transmission case.
41. Install the bolts (1) to hold the oil pump into the transmission case. Tighten the oil pump bolts to 28 Nm (250 in.lbs.).

NOTE: When measuring the input shaft end-play, two "stops" will be felt. When the input shaft is pushed inward and the dial indicator zeroed, the first "stop" felt when the input shaft is pulled outward is the movement of the input shaft in the input clutch housing hub. This value should not be included in the end-play measured value and therefore must be recorded and subtracted from the dial indicator reading.










NOTE: If NO input shaft end play is noted, disassemble the input clutch assembly and check for the #2, #3, or #4 thrust bearing fallen out of position or cracked. Replace any cracked thrust bearing and reassemble using trans jell or petroleum jelly to retain the thrust bearings. The selectable bearing spacer thickness is identified by a numeric numeral molded or stamped into the spacer.

NOTE: (8266-17) will fit loosely onto the input shaft, this should not effect the performance of the adapter.

42. Using (8266-17) from (8266B) (1) and (C-3339A) (2), measure and record the input shaft end-play. The correct end-play is 0.52-0.74 mm (0.020-0.029 in.). Adjust as necessary. Install the chosen selectable bearing spacer on the number 5 thrust bearing and re-measure end-play to verify selection.

Input Shaft End Play Selectable Bearing Spacer Thickness
- 27 = 1.57 mm (0.062 in.)
- 28 = 1.71 mm (0.067 in.)
- 29 = 1.85 mm (0.073 in.)
- 30 = 1.99 mm (0.078 in.)
- 31 = 2.13 mm (0.084 in.)
- 32 = 2.27 mm (0.089 in.)
- 33 = 2.41 mm (0.095 in.)
- 34 = 2.55 mm (0.100 in.)
- 35 = 2.69 mm (0.106 in.)
- 36 = 2.83 mm (0.111 in.)
- 37 = 2.97 mm (0.117 in.)
- 38 = 3.11 mm (0.122 in.)
- 39 = 3.25 mm (0.128 in.)
- 40 = 3.39 mm (0.133 in.)
- 41 = 3.67 mm (0.144 in.)





NOTE: To avoid contamination and garter spring dislodgement , do not handle the front cover seal when installing the front cover into the transmission case.

43. Position the new front cover (1) onto transmission case.
44. Using a dead-blow mallet and the (9955), install the front cover into the transmission case.
45. Install the snap ring into the transmission case.










46. Install the valve body. Verify that the pin on the manual lever has properly engaged the TRS selector plate. Tighten the valve body to transmission case bolts (1) to 12 Nm (105 in.lbs.).






CAUTION: The primary oil filter seal MUST be fully installed flush against the oil pump body. DO NOT install the seal onto the filter neck and attempt to install the filter and seal as an assembly. Damage to the transmission will result.

47. Install a new primary oil filter seal in the oil pump inlet bore. Seat the seal in the bore with the butt end of a hammer, or other suitable tool.
48. Install the primary oil filter (1) and the oil cooler return filter (2). Tighten the screw to hold the primary oil filter to the valve body to 4.5 Nm (40 in.lbs.). Using (8321), tighten the cooler return oil filter to the transmission case to 9.5 Nm (84 in. lbs.).
49. Apply RTV silicone to the oil pan and install the transmission oil pan. Tighten the bolts to 12 Nm (105 in.lbs.).










50. Install the input (3), output (1), and line pressure sensors (2). Tighten the bolts to 12 Nm (105 in.lbs.).