Disassembly
AUTOMATIC TRANSMISSION - 42RLEVALVE BODY
DISASSEMBLY
NOTE: If the valve body is being reconditioned or replaced, it is necessary to perform the Quick Learn Procedure using the DRBIII Scan Tool. Refer to Transmission Control Systems. Testing and Inspection
1. Remove manual shaft seal.
Fig. 271 Manual Shaft Retaining Screw:
2. Remove manual shaft screw (1) (Fig. 271).
Fig. 272 Manual Shaft/Rooster Comb and Transmission Range Sensor:
3. Remove Transmission Range Sensor (TRS) (1) and manual shaft (2) (Fig. 272).
Fig. 273 Solenoid Retaining Screws:
4. Remove Solenoid/Pressure Switch Assembly (1) from valve body (Fig. 273).
Fig. 274 Remove Stiffener Plate:
5. Remove valve body stiffener plate (1) (Fig. 274).
Fig. 275 Remove Transfer Plate-to-Valve Body Screws:
6. Invert valve body assembly and remove transfer plate-to-valve body screws (1) (Fig. 275).
Fig. 276 Remove Transfer Plate to Valve Body:
7. Remove transfer/separator plate (1) from valve body (2) (Fig. 276)
Fig. 277 Remove Separator Plate-to-Transfer Plate Screws:
8. Remove separator plate-to-transfer plate screws (2) (Fig. 277).
Fig. 278 Remove Separator Plate to Transfer Plate:
9. Remove separator plate (1) from transfer plate (2) (Fig. 278).
Fig. 279 Remove Oil Screen to Transfer Plate:
10. Remove the oil screen (1) from the transfer plate (Fig. 279).
Fig. 280 Remove Thermal Valve to Transfer Plate:
11. Remove thermal valve (1) (Fig. 280) from transfer plate.
Fig. 281 Ball Check Location:
12. Remove valve body check balls (1-4). Note their location for assembly ease (Fig. 281).
Fig. 282 2/4 Accumulator Assembly:
13. Remove 2/4 accumulator assembly (1-5) (Fig. 282).
Fig. 283 Remove Dual Retainer Plate using Tool 6301:
14. Remove dual retainer plate (2) from valve body Use special tool 6301 (1) to remove plate (2) (Fig. 283).
Fig. 284 Remove Regulator Valve Spring Retainer using Tool 6302:
15. Remove regulator valve spring retainer (2) (Fig. 284).
Fig. 285 Valve Retainer Location:
16. Remove remaining retainers (1, 2) (Fig. 285).
Fig. 286 Valve Body Assembly:
17. Remove all valves and springs (Fig. 286).
18. Cleanliness through entire disassembly and assembly of the valve body cannot be overemphasized. When disassembling, each part should be washed in a suitable solvent, then dried by compressed air. Do not wipe parts with shop towels. All mating surfaces in the valve body are accurately machined; therefore, careful handling of all parts must be exercised to avoid nicks or burrs.