Service Manual

Straight Thread Plug ISB, ISBe and QSB (Common Rail [...]
Page 17-6 Section 17 - Miscellaneous - Group 17
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Straight Thread Plug (017-011)
General Information
Two types of straight thread plugs are used:
1 Straight thread plug with o-ring
2 Straight thread plug with formed in-place sealant.
The two plugs are interchangeable and reusable. The
only difference between the two plugs is the installation
torque value. See the install step of this procedure.
Remove
Select the appropriate size Allen wrench or socket, and
remove the plug.
Clean and Inspect for Reuse
Use spray cleaner, Part Number 3375433, or equivalent,
to clean the threads of the straight-thread plugs and
threaded bores.
Inspect the threads of the pipe plugs for mutilation or
damage.
Replace the plugs, if damaged.
Inspect the threaded bores for damage.
Repair the bores, if necessary.