Case Extension Assembly Installation

Tools Required

• J 36850  Transjel® Lubricant
• J 38694  Extension Housing Seal Installer. See Special Tools .
• J 38869  Rear Extension Seal Installer. See Special Tools .

1. Install the prop shaft front slip yoke oil seal assembly (20) (model dependent) with the J 38869  or the J 38694  (for fixed yoke applications). See Special Tools . Apply J 36850  or equivalent to the spring pocket of the seal.
   Fig 1: Installing J 38869 On Prop Shaft Front Slip Yoke Oil Seal Assembly

   Courtesy of GENERAL MOTORS CORP.
2. Install the transmission output shaft yoke seal sleeve (682) and the output shaft seal (683) (for some models).
   Fig 2: Installing Case Extension Components

   Courtesy of GENERAL MOTORS CORP.
3. Install the output shaft seal (675) (for some models).
4. Install the bearing spacer (18), case extension ball bearing assembly (17) and the bearing retainer ring (16) (for some models).
5. Install the case extension seal (15) onto the case extension assembly (19).
6. Install the case extension assembly (19) onto the transmission case.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
7. Install the case extension bolts (21).

   Tighten:  Tighten the bolts to 34 N.m (25 lb ft).