Inspecting Valve Spring Retainer Keys; Replacing Fuel Injector Sleeves; Removal; Installation - Navistar INTERNATIONAL DT 466 Service Manual

Inspecting Valve Spring Retainer Keys

1. Clean all valve spring retainer keys with a suitable
solvent.
2. Check the inside and outside of the valve spring
retainer keys for wear. Replace any worn retainer
keys.

Replacing Fuel Injector Sleeves

Removal

NOTE: If the fuel injector sleeve is being removed
while the engine is in-chassis, place a cup plug in the
bore before removal to prevent debris from entering
the cylinder bore.
1. Insert the fuel injector sleeve removal tool into the
fuel injector bore.
2. Turn the removal tool to cut threads into the fuel
injector sleeve. Remove the tool from the bore.
3. Install the fuel injector sleeve puller tool into the
bore and tighten. Make sure that the puller tool is
threaded all the way into the fuel injector sleeve.
4. Install a slide hammer onto the puller tool.
Remove the fuel injector sleeve from the bore.
Figure 188 Cleaning fuel injector bore
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
CYLINDER HEAD AND VALVE TRAIN
EGES-265-2
Follow all warnings, cautions, and notes.
© 2009 Navistar, Inc.
5. Use a stiff wire brush to clean deposits and
hardened sealant from the fuel injector bore.
6. Insert a small stiff nylon brush tool into oil gallery
for cleaning.
WARNING: To prevent personal injury or
death, wear safety glasses with side shields.
Limit compressed air pressure to 207 kPa (30 psi).
7. Use compressed air to clean out all fuel and oil
galleries of debris.

Installation

1. Inspect installation tool for a bent pilot shaft or any
nicks where sleeve will seat
Figure 189 Applying Loctite® 620 sealant to fuel
injector sleeve
2. Place a new fuel injector sleeve on the end of
the installation tool. See cylinder head and valve
special service tools (Table 17).
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