Duramax LLY – VALVE LIFTER REPLACEMENT – Removal

1. Remove one or both cylinder heads as needed. Refer to procedures in this section.

2. Remove bolt attaching guide plate clamp to block and remove clamp (Figure 2-15).

3. Remove lifter guide plate. Use magnet and long hand held gripper tool to unseat and remove plate.

NOTE: If more than one lifter will be removed, keep the lifters in sequence of removal. It is important that original lifters be re-installed in the same bore. This ensures that the lifter and cam lobe wear-in patterns will match.

4. Remove necessary lifters with tool Jร29834. Insert tool in lifter and push tool plunger downward to expand tool lugs and grip lifter. Then remove lifter with a pull and turn motion.