Power Steering Reservoir

Replace the power steering fluid reservoir on a 2008 Dodge Viper 8.4L V10, including draining and refilling the system with Mopar ATF+4.

Warnings

Tools required

Parts

• Power steering reservoir × 1 — Use OEM specification
• Power steering reservoir cap (if damaged) × 1 — Use OEM specification

Fluids

• Mopar ATF+4 — 1.5 qt

Preparation

1. Park vehicle on level surface and allow engine to cool completely
2. Open hood and secure in raised position
3. Place drain pan beneath power steering reservoir area to catch fluid
4. Have shop towels ready to contain spillage

Procedure

1. 1

   Locate power steering reservoir
   The power steering reservoir is a plastic container with a cap and fluid level markings located in the engine compartment; verify its exact mounting location against factory service documentation for the 2008 Viper 8.4L V10.
2. 2

   Remove reservoir cap and drain fluid
   Remove the power steering reservoir cap by turning counterclockwise. Use a turkey baster or fluid extraction pump to remove as much fluid as possible from the reservoir. This will minimize spillage during hose disconnection. Dispose of old fluid properly.
3. 3

   Disconnect return hose
   Locate the lower return hose (typically the larger diameter hose) connected to the bottom of the reservoir. Use hose clamp pliers to compress and slide the spring clamp down the hose away from the reservoir fitting. Twist and pull the hose off the reservoir nipple. Allow remaining fluid to drain into the pan. Have shop towels ready to catch spillage.
4. 4

   Disconnect supply hose if equipped
   If a second hose is connected to the reservoir (some configurations have a return line only), compress and slide its spring clamp down the hose away from the reservoir. Twist and pull the hose off the reservoir fitting. Position hose ends upward to minimize fluid loss.
5. 5

   Remove reservoir mounting fasteners
   Remove the bolts securing the power steering reservoir bracket to the engine or chassis (bolt count and size per factory service documentation). Support the reservoir as you remove the last fastener to prevent it from falling.
6. 6

   Remove reservoir from vehicle
   Lift the reservoir and bracket assembly up and out of the engine compartment. Tilt as needed to clear surrounding components. Inspect the mounting bracket for damage or cracks. The bracket may be reusable if transferring to the new reservoir.
7. 7

   Inspect hoses and system components
   Examine both power steering hoses for cracks, deterioration, or damage at the connection points. Check hose clamps for corrosion or loss of spring tension. Replace any damaged hoses or clamps before installing the new reservoir. Wipe the hose fittings clean with shop towels to remove old fluid and debris.
8. 8

   Install new reservoir
   Position the new power steering reservoir with bracket into the mounting location. Align the mounting holes with the chassis or engine mounting points. Install the mounting bolts and tighten to the factory-specified torque (bolt count and size per service documentation). Ensure the reservoir is stable and does not move when pulled.
9. 9

   Connect supply and return hoses
   Push the return hose firmly onto the lower reservoir nipple until it seats completely. Slide the spring clamp up into position over the hose-to-nipple connection. If equipped with a supply hose, connect it to the appropriate fitting and secure with its spring clamp. Ensure both hoses are fully seated and clamps are positioned correctly to prevent leaks.
10. 10

    Fill reservoir with fresh fluid
    Pour the manufacturer-specified power steering fluid (verify Mopar ATF+4 or other specified fluid per the 2008 Viper owner's manual/FSM) into the new reservoir until the fluid level reaches the 'FULL COLD' or maximum mark on the reservoir. Do not overfill. Install the reservoir cap and turn clockwise until tight.
11. 11

    Bleed air from system
    Start the engine and allow it to idle. Turn the steering wheel slowly from lock to lock 10-15 times to purge air from the system. Check the reservoir fluid level frequently and add fluid as needed to maintain the proper level. The fluid may appear foamy initially; this is normal and will dissipate as air is removed. Continue turning the wheel until the fluid level stabilizes and no more air bubbles appear in the reservoir.
12. 12

    Check for leaks and top off fluid
    With the engine running, inspect all hose connections at the reservoir for leaks. Wipe the connections dry with a shop towel and observe for fresh fluid seepage. Turn the steering wheel lock to lock several more times while checking for leaks. Shut off the engine and verify the fluid level is at the 'FULL HOT' mark. Add fluid if necessary and reinstall the cap.

Reassembly

1. Installation is covered in the procedure steps above
2. Ensure all hose clamps are properly positioned and secure
3. Verify reservoir cap is tightened to prevent contamination

Verification

• Start the engine and verify smooth power steering operation with no unusual noises (whining or groaning)
• Turn the steering wheel through full range of motion and confirm normal assist
• Check reservoir fluid level is at 'FULL HOT' mark with engine at operating temperature
• Inspect all connections for leaks after test drive
• Verify no air bubbles visible in reservoir fluid when engine is running

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