Symptoms:

  • Flare shifts
  • Harsh shifts
  • Slipping gears
  • Burnt clutches

Cause:

Wear at the accumulator piston bores in the valve body allows apply oil to exhaust.

Correction:

Sonnax drop-in, case hardened steel accumulator piston incorporates an O-ring for positive sealing and annular grooves for better centering and wear prevention.

AS66RC, AS69RC

B1, B2, K1, K2, K3 Accumulator Piston Kit
Part No. 122740-13K

Fits any of 5 locations

You need this if... View Instructions Find a Distributor

Wear at the accumulator bores in Aisin Seiki AS66RC and AS69RC units is very common. The B1, B2, K1, K2, and K3 accumulator pistons are all the same size and are used during apply of the clutches to ease the engagement of the apply component. Wear at the valve body bore allows apply oil to exhaust, resulting in harsh or delayed apply, burned clutches, or slipping and flares in the associated gears.

Sonnax B1, B2, K1, K2, K3 accumulator piston kit 122740-13K incorporates an O-ring for positive sealing, even in worn bores. This one kit will work in any of the five bores.

  • O-Ring provides positive seal even in worn bores
  • Annular grooves provide better piston centering and reduce wear
  • Drop-in Zip Valve™ parts install quickly and easily
Learn More About Zip Valve™ Drop-In Repairs
  • Piston
  • O-Ring
  • Spring Large
  • Spring Small
  • AS66RC, AS69RC B1, B2, K1, K2, K3 Accumulator Piston Kit 122740-13K
  • AS66RC, AS69RC B1, B2, K1, K2, K3 Accumulator Piston Kit 122740-13K
  • AS66RC, AS69RC B1, B2, K1, K2, K3 Accumulator Piston Kit 122740-13K

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.

AS66RC, AS69RC B1, B2, K1, K2, K3 Accumulator Piston Kit Vacuum Test Locations