FIG 12 1964 crankcase
Tappets and guides. The timing side crankcase tappet guide in situ has
two locating diameters ¼" wide at the top and bottom of the guide
bousing. The guides are located by a grub screw in register with a vee
shaped groove machined circumferentially on the outside diameter of the
guide. As the tappet foot is larger than the outside diameter of the guide,
the tappet must be taken out from inside the timing chest, after removing
the guide.
Removing the tappets. With the push rods, timing cover, oil pump, and
cam gear removed, take out the grub screws, warm the crankcase, then
push the tappet and guide upwards until the guide is clear, then take out
the tappet from inside the timing chest. The short interference fit makes
it easier to remove the guides.
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