Printpartsummary
Symptoms:
  • Inadequate lubrication
  • TCC apply & release concerns
  • TCC codes
Cause:

A sticking lockup relay control sleeve prevents TCC apply or release. Sleeve wear reduces converter pressure, overheating the fluid, and results in bushing and solenoid failure.

Correction:

The tightly toleranced, drop-in replacement Sonnax valve and sleeve assembly restores proper hydraulic clearances, and uses upgraded materials to prevent wear.

55-50SN, 55-51SN

Lockup Relay Control Valve Kit

Part No.

59947-01K

Lockup Relay Control Valve Kit
  • 59947-01k_combo

  • Lockup Relay Control Valve Kit

Small_59947-01k_combo Small_59947-01k

55-50SN, 55-51SN

Lockup Relay Control Valve Kit

Part No. 59947-01K

  • Valve
  • Sleeve

Also fits AF 23/33 and RE5F22A units.

Complaint:

  • Inadequate lubrication
  • TCC apply & release concerns
  • TCC codes

Cause:

A sticking lockup relay control sleeve prevents TCC apply or release. Sleeve wear reduces converter pressure, overheating the fluid, and results in bushing and solenoid failure.


Correction:

The tightly toleranced, drop-in replacement Sonnax valve and sleeve assembly restores proper hydraulic clearances, and uses upgraded materials to prevent wear.

  • Sleeve is manufactured from highly wear-resistant billet aluminum.
  • Valve is made from hard-coat anodized aluminum to prevent wear

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

  • Test Locations

Click here to view PDF if instructions do not appear below.

It appears you don't have a PDF plugin for this browser. Click here to view the PDF file.

Valve Body Layouts

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

Valve Body Layout Aisin AW 55-50SN

Related Tech Articles

Tory Royce

The Art of the Silver Bullet

Contact a Sonnax Distributor to purchase this part.