AW55-50SN, AF33-35, RE5F22A

Also fits AF23/33 and RE5F22A.

Symptoms:

• Low line pressure
• 2-3 Flare
• No 3rd
• No 4th
• No 5th
• Delayed Forward
• 5th Gear only
• No lockup

Cause:
The OE steel valve results in excessive clearance during hot operation and frequently sticks when cold. Bore wear can reduce available solenoid modulator pressure, resulting in delayed forward, flare on 2-3, TCC slippage or soft shifts overall. Bore wear at the inboard end results in excess solenoid pressure, improper gear or harsh shifts.

Correction:
The Sonnax oversized solenoid modulator valve made of wear resistant hardcoat anodized aluminum re-establishes proper pressures. Additional support is given to the valve by adding length to the outboard spool.

Aisin AW 55-50SN and 55-51SN transmissions may exhibit multiple shift problems due to excessive wear in the solenoid modulator circuit. Loss of 3rd, 4th or 5th Gear and no TCC apply are common along with low line pressure and flare shifts. Bore wear at the inboard end results in high solenoid pressure, improper gear or harsh shifts. Sonnax oversized solenoid modulator valve kit allows the bore to be refurbished, and the hydraulic integrity restored for proper modulated solenoid pressure.

• Hard-coat anodized to increase wear resistance
• Added length at the outboard spool for additional valve support
• Salvages severely worn valve castings

Content:

• Valve
• End Plug

SONNAX Installation Instructions