Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1999CORVETTE 2D COUPE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONMANUAL TRANSOVERHAUL - BORG-WARNER T56 6-SPEEDADJUSTMENTSCOUNTERSHAFT EXTENSION SELECTIVE SHIM PROCEDURE
1999 Chevrolet Corvette 2D Coupe, Standard
Countershaft Extension Selective Shim Procedure
1999 Chevrolet Corvette 2D Coupe, StandardSECTION Countershaft Extension Selective Shim Procedure
NOTE:
This procedure cannot be performed accurately until countershaft selective shim procedure has been performed.
- Position transmission in horizontal position. Install countershaft extension to countershaft, ensuring splines fully engage. Install extension housing and bolts. Tighten bolts to specification. See TORQUE SPECIFICATIONS . Remove adapter plate plug. Install Countershaft Extension End Play Measuring Rod (J-39444-2) through adapter plate plug hole, and screw rod into countershaft extension. See Fig 1 .
- Install dial indicator with tip on end of measuring rod. Position transmission in a vertical position. Measure countershaft end play using rod to move countershaft extension up and down. End play should be .002-.005" (.05-.13 mm). Select appropriate shim to obtain specification.
- Remove dial indicator and measuring rod. Apply sealant to plug threads and install adapter plate plug. Tighten plug to specification. See TORQUE SPECIFICATIONS . Install selective shim. Install countershaft extension and bearing race. Install extension housing and bolts. Tighten to specifications. See TORQUE SPECIFICATIONS .
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.