Valve Body

Removal, replacement, and installation of the automatic transmission valve body on a 2005 Dodge Viper, including fluid draining, pan removal, filter service, and valve body R&R.

Warnings

Tools required

Parts

• Valve body assembly (new or remanufactured) × 1 — Use OEM specification or tested aftermarket equivalent
• Transmission pan gasket × 1 — Use OEM specification
• Transmission filter × 1 — Use OEM specification
• Transmission filter seal/O-ring × 1 — Use OEM specification
• ATF+4 automatic transmission fluid × 6 — Mopar ATF+4 or MS-9602 equivalent

Fluids

• ATF+4 automatic transmission fluid — 6 qt

Preparation

1. Park vehicle on level surface and engage parking brake
2. Allow transmission to cool completely (minimum 2 hours after operation)
3. Raise vehicle with floor jack and support securely on jack stands at manufacturer-specified lift points
4. Verify vehicle is stable and will not shift during service
5. Position drain pan beneath transmission pan
6. Wear nitrile gloves and eye protection throughout procedure

Procedure

1. 1

   Drain transmission fluid
   Loosen the transmission drain plug located at the rear of the transmission pan. Allow fluid to drain completely into drain pan. Once drained, remove drain plug fully and inspect condition of crush washer. If equipped with crush washer, discard and prepare new washer for installation. Set drain plug aside for reinstallation.
   Torque spec

   Transmission Drain Plug30 Nm (22 lb-ft)
2. 2

   Remove transmission pan
   Remove all transmission pan bolts in a criss-cross pattern, starting from the center and working outward. Leave two bolts at opposite corners partially threaded to support pan weight. Carefully break pan seal by gently prying at a corner with plastic scraper. Support pan, remove final two bolts, and lower pan carefully to avoid spilling residual fluid. Inspect pan for metal debris or clutch material, which may indicate internal transmission wear.
   Torque spec

   Transmission Pan Bolts12 Nm (9 lb-ft)
3. 3

   Remove transmission filter
   Locate the transmission filter attached to the valve body. Remove the filter mounting bolts (typically 2-3 bolts securing filter to valve body). Carefully pull filter straight down to disengage from valve body pickup tube. Inspect filter for debris and damage. Remove and discard filter seal/O-ring from valve body.
4. 4

   Document valve body configuration
   Before removing valve body, carefully photograph or diagram the positions of all external components including solenoids, electrical connectors, and manual valve linkage position. Note the orientation of the valve body and any identifying marks. Count and document the location of all visible check balls in the separator plate if visible from below.
5. 5

   Disconnect valve body electrical connections
   Locate the transmission range sensor connector and solenoid pack connector(s) attached to the valve body. Depress connector locking tabs and carefully disconnect all electrical connectors. Note routing of wiring harness for reinstallation. Inspect connectors for corrosion or damage.
6. 6

   Disconnect manual valve linkage
   Locate the manual valve actuating lever at the side of the valve body. Note the position of the manual valve in relation to the park/neutral safety switch. Carefully disengage the manual valve from the transmission range sensor linkage. This typically involves removing a retaining clip or bolt and sliding the linkage connection free.
7. 7

   Remove valve body mounting bolts
   Remove all valve body mounting bolts in a systematic pattern. There are typically 12-16 bolts of varying lengths securing the valve body to the transmission case. Keep bolts organized by location as they may be different lengths. Support valve body weight as final bolts are removed to prevent it from falling.
8. 8

   Remove valve body and separator plate
   Carefully lower the valve body assembly, keeping it level to prevent check balls from falling out of the separator plate. The separator plate and gaskets will likely remain attached to either the valve body or transmission case. If check balls are visible in separator plate pockets, photograph their exact positions before disturbing. Remove separator plate and gaskets, noting orientation and any identifying marks. Place check balls in numbered container or diagram to maintain correct positions.
9. 9

   Clean mating surfaces
   Using plastic scraper and lint-free towels, carefully clean all gasket material from transmission case and valve body mating surfaces. Do not allow debris to fall into transmission case. Use compressed air to blow out fluid passages if available, but protect eyes from fluid spray. Inspect transmission case for cracks or damage around bolt holes.
10. 10

    Prepare and install new valve body
    If installing a remanufactured valve body, verify it matches the original part number and configuration. Install new separator plate gaskets in correct orientation on transmission case. Position separator plate with check balls in their documented locations. Carefully position new valve body assembly over separator plate, ensuring all alignment pins engage properly and manual valve aligns with its bore in the case.
11. 11

    Install valve body mounting bolts
    Thread all valve body mounting bolts by hand to ensure proper thread engagement. Once all bolts are started, tighten in a criss-cross pattern working from center outward to the specified torque. Ensure valve body sits flush against separator plate with no gaps. Verify manual valve moves freely through its full range of motion.
12. 12

    Reconnect manual valve linkage and electrical connections
    Reconnect the manual valve linkage to the transmission range sensor, ensuring secure engagement and proper alignment. Verify linkage moves freely through all gear positions. Reconnect all electrical connectors to solenoids and sensors, ensuring connectors lock securely. Route wiring harness as originally configured.
13. 13

    Install new transmission filter
    Install new filter seal/O-ring onto valve body pickup tube, lubricating lightly with clean ATF+4 fluid. Position new filter onto pickup tube and push firmly to seat seal. Install filter mounting bolts and tighten to specified torque. Verify filter is secure and properly seated.
14. 14

    Clean and install transmission pan
    Thoroughly clean transmission pan interior using solvent and lint-free towels. Clean magnet if equipped and reinstall in pan. Remove all old gasket material from pan flange using plastic scraper. Position new pan gasket on pan or transmission case per gasket manufacturer instructions. Carefully raise pan into position, ensuring gasket remains properly aligned.
15. 15

    Install pan bolts and drain plug
    Thread all pan bolts by hand to prevent cross-threading. Tighten pan bolts in a criss-cross pattern from center outward to specified torque. Do not overtighten as this will distort pan and cause leaks. Install drain plug with new crush washer if equipped and torque to specification.
    Torque spec

    Transmission Pan Bolts12 Nm (9 lb-ft)

    Transmission Drain Plug30 Nm (22 lb-ft)
16. 16

    Fill transmission with fluid
    Lower vehicle to ground. Locate transmission dipstick tube and remove dipstick. Using transmission fluid pump or funnel with long hose, add 5 quarts of ATF+4 fluid initially. Start engine and allow to idle in park. With engine running and parking brake engaged, shift through all gear positions, pausing 2-3 seconds in each position. Return to park. Check fluid level on dipstick with engine running. Add additional fluid in small increments until level reaches cold range on dipstick. Total capacity will be approximately 6 quarts.
17. 17

    Road test and verify operation
    Drive vehicle through all gears under light to moderate load, monitoring for proper shift quality and timing. Check for delayed engagement, harsh shifts, slipping, or unusual noises. Return to shop and recheck fluid level with transmission at operating temperature. Fluid should be in hot range on dipstick. Raise vehicle and inspect pan for leaks around gasket and drain plug. Torque check all pan bolts if any seepage is observed.

Reassembly

1. Reassembly is detailed in the installation steps above
2. Ensure all electrical connectors are fully seated and locked
3. Verify manual valve linkage operates smoothly through all gear positions before final assembly
4. Double-check that separator plate check balls are in correct positions before valve body installation
5. Use only new gaskets and seals; never reuse old gaskets

Verification

• Start engine and verify no leaks from transmission pan or drain plug
• With engine running in park, verify fluid level is in proper range on dipstick
• Shift through all gear positions and verify smooth engagement with no delays or harsh shifts
• Road test vehicle and verify proper transmission operation in all gears under various load conditions
• Recheck fluid level after reaching operating temperature and top off if necessary
• Verify no transmission fault codes are stored using scan tool if available
• After 50-100 miles of driving, recheck fluid level and inspect for leaks

More procedures for this vehicle