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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1620 (Automatic Transmission - 6T75 - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Off-Vehicle Repair Instructions >> 3-5-Reverse and 4-5-6 Clutch Housing Assemble >> 3-5-R and 4-5-6 Clutch Piston Air Check

3-5-R and 4-5-6 Clutch Piston Air Check

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: 35R and 456 Clutch Piston Air Check
GM1875586Courtesy of GENERAL MOTORS CORP.
3-5-R and 4-5-6 Clutch Piston Air Check

Callout Component Name
1 Case Cover Assembly
Tip:  The fluid seal rings should be in place and not damaged.
2 4-5-6 Clutch Feed Fluid Passage
CAUTION: Regulate the air pressure to 40 psi maximum. High pressure could cause the piston to over travel and damage the piston seals.

Procedure

  1. Apply shop air to the 4-5-6 clutch feed passage.
  2. Observe the 4-5-6 piston movement.

Tip:  Minimal piston movement and excessive air leaking could indicate damage to the 4-5-6 piston seals or improper assembly.
3 3-5 Rev Clutch Feed Fluid Passage
CAUTION: Regulate the air pressure to 40 psi maximum. High pressure could cause the piston to over travel and damage the piston seals.

Procedure

  1. Apply shop air to the 3-5-Rev clutch feed passage.
  2. Observe the 3-5-Rev piston movement.

Tip:  Minimal piston movement and excessive air leaking could indicate damage to the 3-5-Rev piston seals or improper assembly.
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