ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 017-002   Cup Plug

CAUTION  Do not allow metal shavings to fall in the engine when drilling a hole in the cup plug. Damage to engine components can occur.

Use a center punch to mark the cup plug for drilling.

Drill an 1/8-inch hole into the cup plug.

Use a dent puller to remove the plug.

Discard all used cup plugs. Do not use them again.

Thoroughly clean the cup plug hole using Scotch-Brite™, or equivalent. Use spray cleaner, Cummins Part Number 3375433, or equivalent, to perform a final clean of the bore.

Inspect the cup plug bores for damage.

CAUTION  Excessive sealant can run back into the engine and cause damage to other components. Allow the sealant to dry for a minimum of 2 hours before operating the engine. The plug can come out of the bore if the sealant is not dry.

Apply a 2 mm [1/16 in] bead of cup plug sealant, Part Number 3375068, or equivalent to the outside circumference of the cup plug and the inside diameter of cup plug bore.

NOTE: Do not install a used cup plug. Discard all plugs after removal.

Install the cup plug with the appropriate cup plug driver. See the Service Tools Catalog, Bulletin Number 3377710.

CAUTION  Do not install the cup plug too deeply. If the cup plug is not installed straight and flat, it must be replaced with a new cup plug.

The cup plug must be installed with the edge of the cup plug 0.5 to 1.0 mm [0.020 to 0.040 in] deeper than the leading chamber of the bore.