Valve Springs; Install - Yale GDP16-20AF Maintenance Manual

600 YRM 496

Valve Springs

1. Check valve springs for damage.
2. Measure free length of outer valve springs. See
Figure 16.
Minimum length of intake spring is 44.3 mm
(1.74 in.). Minimum length of exhaust spring is
50.8 mm (2.00 in.).
3. Check outer valve springs for squareness. See Fig-
ure 16.
If measurement is more than 1.81 mm (0.071 in.),
replace valve spring(s).
A. MEASURE HERE
Figure 16. Valve Springs Inspection

INSTALL

1. Clean surface of cylinder head and surface of en-
gine block.
2. Install new gasket and cylinder head on engine
block.
3. Install capscrews and washers for cylinder head.
Tighten capscrews to 82 to 88 N•m (60 to 65 lbf ft)
in proper sequence. See Figure 17.
4. Apply gasket sealer to areas shown by arrows. Lu-
bricate camshaft with clean engine oil. Then in-
stall camshaft. Make sure dowel pin is at top of
camshaft. See Figure 18.
Cylinder Head, Camshaft, and Valve Mechanism Repair
Figure 17. Cylinder Head Installation
1. DOWEL PIN
Figure 18. Camshaft Installation
5. Assemble rocker shaft assembly. See Figure 19.
Lubricate rocker arms and shafts engine oil. Put
capscrews in rocker shaft supports. Then install
assembly on cylinder head.
2. APPLY SEALANT
HERE
7