DETROIT DIESEL 53
1.2.2 Exhaust Valves
Remove Exhaust Valve Guide
1. Support the cylinder head, bottom side up, on 3 "
thick wood blocks.
2. Drive the valve guide out of the cylinder head with
valve guide remover
(four valve head) as shown in Fig. 5.
Install Exhaust Valve Guide
Turn the cylinder head right side up and install the
valve guide as follows:
1. Insert the internally threaded end of the valve guide
in the proper valve guide installing tool (refer to the
Valve Guide Installing Tool chart). Be sure to use the
correct tool to avoid damage to the valve guide and to
locate the valve guide to the proper dimension.
2. Position the valve guide squarely in the bore in the
cylinder head and press the installing tool gently to
start the guide in place (Fig. 6). Then press the guide
in until the tool contacts the cylinder head (the bottom
Fig. 6 - Installing Valve Guide
of the counterbore in the four valve cylinder head).
CAUTION: Do not use the valve guides as a
means of turning the cylinder head over or in
handling the cylinder head.
*Machined for use with valve guide oil seal.
Valve Guide Installing Tools
Inspect the exhaust valve seat inserts for excessive
Remove Exhaust Valve Seat Insert
The valve seat inserts are pressed into the cylinder
head and must be removed as outlined in the
following procedure to avoid damage to the cylinder
1. Place the cylinder head on its side on a bench as
shown in Fig. 7.
Fig. 5 - Removing Valve Guide
2. Place the collet of tool