VBFIX-logo-web details-chart-web video-logo-web printlink SERVOFIX-logo-web r_and_r_only maillink sonnax-black Facebook-color Twitter-color LinkedIn-color Youtube-color

Symptoms:

  • Damaged accumulator bore
  • Poor shift quality
  • Loss of accumulator control

Cause:

Debris and piston contact can score the 4th accumulator bore.

Correction:

Install this sleeve and pinless accumulator piston.

4L80-E, 4L85-E

4th Accumulator Repair Kit
Part No. 34805-01K

Includes Sleeve, Pinless Piston & Seals

View Instructions

Repeated reciprocation of the 4th accumulator piston causes wear at the piston/pin interface. After this wear reaches a critical point, the piston bore wear allows the piston to get cocked and gall the accumulator bore. Once this bore becomes severely galled, the accumulator body must be replaced. The Sonnax kit 34805-01K salvages accumulator housings with a worn or scored 4th accumulator bore. The kit includes a press-in sleeve, and a pinless accumulator piston that uses a PTFE guide ring to support the piston in the bore. No machining is required.

  • Kit salvages accumulator housings with a worn or scored 4th accumulator bore.
  • A press-in sleeve is included for easy installation.
  • Pinless accumulator piston uses a PTFE guide ring to support the piston in the bore.
  • Sleeve
  • Pinless Accumulator Piston
  • PTFE Seal
  • D-Ring Seal
  • Pin Bore Plug

  • 34805 01k