Symptoms:

  • Burnt clutches & bands
  • Leakage at the accumulator pin bore

Cause:

A worn accumulator pin bore causes leakage at the acumulator piston.

Correction:

The Sonnax oversized accumulator pin restores 1st/2nd accumulator circuit integrity.

180, 180C (3L30), 4L30-E

Oversized Accumulator Pin Kit
Part No. 54250-05K


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Pin bore wear at the 1st/2nd accumulator circuit causes leaks and burns up clutches and bands. The Sonnax oversized accumulator pin kit 54250-04K includes a reamer to oversize the piston pin bore. The oversized pin allows for tighter clearance between the pin and piston and restores the integrity of the circuit. A replacement accumulator pin kit 54250-05K is also available without the reamer, as the reamer from 54250-04K can be reused.

  • Oversized pin allows for tighter clearance between pin and piston
  • Reamer allows piston pin bore to be oversized
  • Works with 4L30-E and both the early and late model TH180
  • Restores circuit integrity

This kit contains enough parts to repair 4 accumulator pistons, reusing reamer from 54250-04K kit above.The early model TH180 has a removable E-Clip retainer holding the accumulator piston and spring in place. The late model TH180 has a non-removable fixed head holding the accumulator piston and spring in place. The Sonnax pin will work with either of these applications.

  • Pins (4)
  • E-Clips (8)
  • 180, 180C (3L30), 4L30-E Oversized Accumulator Pin Kit 54250-05K
  • 180, 180C (3L30), 4L30-E Oversized Accumulator Pin Kit 54250-05K