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REPAIR INSTRUCTIONS
Page 199
4. Tap the broken yoke pin as deep as possible
using a 3/8-inch NC starter tap and cutting
oil. Clean out the cutting chips using
compressed air.
5. Repeat the above step using a 3/8-inch NC
bottom tap. Again, clean out the cutting
chips using compressed air.
6. Using a slide hammer fitted with a 3/8-inch
NC extractor, remove the broken yoke pin
from the cylinder head (Figure 205).
Thread the slide-hammer extractor as deep as
possible into the threaded yoke pin. Failure to
install the extractor deep enough will cause the
yoke pin to break again.
7. Clean out any remaining chips with
compressed air and inspect the yoke pin
hole in the cylinder head for drilling or
tapping damage.
205
Figure 205 — Valve Yoke Guide Pin Removal
INSTALLATION PROCEDURE
If a new valve yoke guide pin is required, apply
Loctite
®
635 to the pin and use guide pin installer
J 29296 to drive the pin into the cylinder head.
The guide pin will be at the correct height when
tool bottoms on the cylinder head. Refer to
Figure 206.
206
Figure 206 — Valve Yoke Guide Pin Installation
Cylinder Head Cup Plug
Replacement
[213 FP]
The cylinder head has two different size cup
plugs. Both sizes are installed using the following
procedure:
1. Clean the cup bore thoroughly.
2. Using Loctite
®
277 sealer, or equivalent,
apply the sealer to the cup plug and plug
bore in the head.
1. Extractor Lock (Part of PT6570-11)
1. Valve Yoke Guide Pin
2. J 29296
5_106_00.bk Page 199 Friday, August 4, 2000 11:17 AM
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