Valve Gear Reassembly After Valve

CLEANING
Clean all valve guides, valves and valve spring assemblies thoroughly suitable cleaning solution before reassembling.

SERVICE
1. Coat valve stems with lubrication oil and insert in cylinder head.
2. Install new valve stem seals on all valves. The valve stem seals should be pushed firmly and squarely over valve guide. The lower edge of the seal should be resting on the valve guide boss.

CAUTION: When oversize valves are used, the corresponding oversize valve seal must also be used. Excessive guide wear may result if oversize seals are not used with oversize valves.

3. Install valve spring seats and springs and retainers. Compress valve springs only enough to install locks, taking care not to misalign the direction of compression. Nicked valve stems may result from misalignment of the valve spring compressor.

CAUTION: When depressing the valve spring retainers with Special Tool C-3422-B the locks can become dislocated. Check to make sure both locks are in their correct location after removing tool.

Checking Spring Height & Clearance:

4. Check installed height of springs. Measurement is to be taken from the lower edge of the valve spring to its upper edge. Do not include the spring seat or retainer flange. Correct height is 41.2 mm to 42.7 mm (1.62 to 1.68 inches). If seats have been reground an additional spring seat may be required to maintain correct installed spring height.
5. Install adjusters, rocker arms in order, and camshaft. Check for clearance between the projecting ears (either side of valve tip) of the rocker arms and the valve spring retainers. At least 1.25 mm (0.050 in.) clearance must be present, if necessary, the rocker arm ears may be ground to obtain this clearance.
6. Checking dry lash. Dry lash is the amount of clearance that exists between the base circle of an installed cam and the rocker arm roller when the adjuster is drained of oil and completely collapsed. Specified dry lash is 0.62 to 1.52 mm (0.024 to 0.060 in.). To completely collapse adjuster for dry lash measurement, pry off retainer cap, disassemble, drain the adjuster of oil, reassemble, and install. After performing dry lash check, refill adjuster with oil (do not reuse retainer cap/s) and allow 10 minutes for adjuster/s to bleed down before rotating cam.