1

3-5 Reverse and 4-5-6 Clutch Fluid Seal Ring

Procedure

1. Place J 46620-3 which is part of J-46620 over the case cover hub and adjust it so that only the bottom seal ring is exposed.
2. Place a NEW fluid seal ring onto J 46620-3 which is part of J-46620 .
3. Use J 46620-2 which is part of J-46620 to push the fluid seal ring down over J 46620-3 which is part of J-46620 into the hub ring groove.
4. Repeat the above steps to install all 4 seal rings, adjusting J 46620-3 which is part of J-46620 to the appropriate ring groove.

Special Tool

J-46620 Seal Installer

2

Small Chamfer Up

Notice: Do not force J 46620-1 down over the seals as this will roll and damage the seals. The large chamfer is designed to fit over the over stretched seal. Use a hand to help shrink the seal if J 46620-1 is difficult to install over the seal rings.

Procedure

Install J 46620-1 which is part of J-46620 with the large chamfer end down over the fluid seal rings and leave J 46620-1 which is part of J-46620 on the seals for at least 60 seconds.

3

Large Chamfer Up

Procedure

1. Install J 46620-1 which is part of J-46620 with the small chamfer end facing down for at least 60 seconds. This will properly size the bottom seal ring.
2. Leaving J 46620-1 which is part of J-46620 on the fluid seal rings for an extended period of time could cause a fluid leak on the initial clutch piston circuit until the seal rings warm up and expand to the proper dimension.

1

2-6 Clutch Piston

Procedure

J-46621 prevents the piston seal lip from damage over the retaining ring groove during installation. Apply a thin coat of ATF to the O.D. of J-46621 to ease the installation of the piston.

Special Tool

J-46621 Seal Protector

2

2-6 Clutch Spring Assembly

3

2-6 Clutch Spring Assembly

Procedure

1. Install the retaining ring with the opening positioned to the top of the case cover.
2. Place the retainer ring inside J-46632 prior to placing J-46632 onto the spring.

Special Tool

J-46632 Spring Compressor

1

Low and Reverse Clutch Piston Assembly

Procedure

1. Install the L/R piston with the air bleed positioned at the alignment feature on the cover, using J-46628-1 . This will orient the piston fingers with the openings in the case.
2. J-46628-1 prevents the piston seal lip from damage during installation. Apply a thin coat of ATF to the I.D. of J-46628-1 to ease the installation of the piston.

Special Tool

J-46628-1 Piston Seal Protector

2

Low and Reverse Clutch Spring

3

Low and Reverse Clutch Spring Retaining Ring

Tip
Do not align the retainer opening with other retaining ring openings.

Special Tool

J-46628-2 Spring Compressor

1

Case Cover Assembly

Tip
The fluid seal rings should be in place and not damaged.

2

2-6 Clutch Feed Passage

Notice: Regulate the air pressure to 40 psi maximum. High pressure could cause the piston to over travel and damage the piston seals.

Procedure

Apply shop air to the 2-6 clutch feed. Observe the 2-6 piston movement.

Tip
Minimal piston movement and excessive air leaking could indicate damage to the 2-6 piston seals or improper assembly.

3

Low and Reverse Clutch Feed Passage

Notice: Regulate the air pressure to 40 psi maximum. High pressure could cause the piston to over travel and damage the piston seals.

Procedure

Apply shop air to the Low and Reverse clutch feed. Observe the Low and Reverse piston movement.

Tip
Minimal piston movement and excessive air leaking could indicate damage to the Low and Reverse piston seals or improper assembly.

1

Input Speed Sensor Seal

2

A/Trans Input Speed Sensor Assembly

3

A/Trans Input Speed Sensor Bolt M6 x 25

Notice: Refer to Fastener Notice in the Preface section.

Procedure

Apply threadlocker GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the input speed sensor bolt.

Tip
The seal is coated with a dry lubricant. If the coating is missing, lubricate the seal with automatic transmission fluid prior to installation.

Tighten
9 N·m (7 lb ft)