Detroit Diesel 4000 Series, Service Manual, Page: 621 / 2706

SERIES 4000 12/16V SERVICE MANUAL
15. Use socket wrench to unscrew injector sleeve (1) from cylinder head. See Figure 356.
1. Sleeve 3. Cylinder Head
2. O-ring
Figure 356 Removing Protective Sleeve
NOTE:
Ensure that socket is correctly engaged in sleeve groove.
16. To remove bridge pin with engine removed, install slide hammer puller to bridge pin.
Remove pin.
NOTE:
Identify any valve bridges that have turned, indicate turn or show unusual wear. Replace
all bridges that meet these criteria.
NOTE:
Count the number of pulls required to remove pin. If pin was removed with few pulls or
removed with little resistance, see step 17.
17. Measure bridge pin bore using pin bore digital measuring tool. Measure bore at three
locations; bottom, middle and top. Record values to a data sheet.
18. Preset tool to 12.7 mm (0.50 in.) prior to measuring.
[a] Replace cylinder heads if any bore is out of tolerance (13.984 – 14.00 mm (0.550
– 0.551 in.))
All information subject to change without notice.
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