Adjusting Valve Clearance
- To remove adjusting disc, cam follower must be depressed using compressing tool (VW 546). Turn cam followers so that grooves are accessible for compressing tool. See Figure. Using compressing tool, depress cam follower. Use disc remover tool (10-208 or US 4476) to remove adjusting disc. See Fig 1.
When installing adjusting discs, ensure thickness marking is positioned downward.
- Thickness of adjusting disc is stamped on bottom of disc. If measured valve clearance is larger than specifications, use a thicker disc. If clearance is less than specification, use a thinner disc. Adjust clearance to middle of tolerance range.
- Adjusting discs are available in 0.002" (0.05 mm) increments from 0.118" (3.0 mm) to 0.167" (4.25 mm).
- To install discs, depress cam followers and slip discs into place. Ensure side of disc with thickness marking is installed down, facing cam follower. Repeat procedure until all valves are properly adjusted.