Valve Body Inspection
1. If a line-to-lube hole has been drilled in the PR valve circuit, it should be plugged to reduce converter drainback.
2. Inspect the TV checkball separator plate seat. Leakage here may produce stacked shifts and/or no kickdown.

Disassembly Instructions
1. Remove the detent assembly & spring retainer bracket, see Figure 1.
2. Remove the original pressure regulator spring and valve.
3. Remove the end plate on the opposite side of the bore and remove the line/TVpressure plug and sleeve assembly and the spring.
4. Keep the OEM line/TV pressure plug spring and the end plate. Discard all other OEM components.
5. Clean the bore thoroughly in a solvent tank.

Prep & Set-up:
Align valve body in fixture according to VB-FIX instructions with the appropriate guide pin provided in tool kit F-22771A-TL7. To align the pressure regulator valve use jig F-22771A-RJ and guide pin F-22771A-GP, then ream with reamer F-22771A-RM. To align the throttle pressure plug bore use jig F-22771A-RJ2 and guide pin F-22771A-GP2, then ream with reamer F-22771A-RM2.
Important Notes:
1. Generously lubricate the bore and reamer with cutting fluid (i.e. Mobilmet S-122, Lubegard Bio-Tap, Tap Magic™, etc). For best results, provide a continuous flow of water-soluble cutting fluid (i.e. Mobilmet S-122) during the reaming process.
2. The reamers should be turned using a low rpm, high torque air drill regulated to a maximum of 200 rpm.
3. Examine the bore after cleaning for surface finish, debris, and burrs. Flashing and burrs on the exit side of lands and bores must be carefully removed. A small piece of Scotchbrite™ material attached to a wire and powered with a drill motor is ideal for the task.

Cautions and Suggestions
1. Turning the reamer backward will dull it prematurely.
2. Pushing on the reamer will result in poor surface finish and inadequate and sporadic material removal.
3. Never use a crescent wrench, ratchet or pliers to turn the reamer.
4. A dull reamer will cut a smaller hole. Reamers can be sharpened, but should only be done by a professional tool sharpener. Actual life of a reamer before resharpening or replacing averages 50-70 bores.

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