Cummins N14 – Cylinder Block – Disassembly

Cam Bore Rear Cup Plug – Removal

To remove the cup plug from the camshaft bore, use a center punch to mark the cup plug for drilling.

Drill a 3.18 mm [1/8-inch] hole in the cup plug.

to remove the cup plug.
NOTE: Discard all used cup plugs.

Straight Thread Plug and Pipe Plug – Removal

Remove the straight thread plugs and pipe plugs from all
oil passages in the cylinder block.
Remove the straight thread plug from the piston cooling
passage in the front of the cylinder block.
Remove the pipe plug from the main oil passage in the
front of the cylinder block.

Remove the straight thread plug and pipe plug from the
piston cooling oil passage on the exhaust side of the
cylinder block.
Remove pipe plugs from the coolant passage on the
exhaust side of the cylinder block.

Remove the straight thread plug from the piston cooling
passage at the rear of the cylinder block.
Remove the pipe plug from the main oil passage at the
rear of the cylinder block.
Remove the six pipe plugs and one straight thread plug
from the main oil passage on the intake side of the cylinder
block.

Remove the straight threaded plug from the main oil
transfer passage on the intake side of the cylinder block.

Dowel Pin – Removal
Use a dowel pin extractor, Part No. ST-1134, or its equivalent.
Remove the six cylinder head groove pins, two
front cover dowel pins, one water pump dowel pin, six
cam follower housing dowel pins, and two flywheel housing
dowel pins.
• Put the split collet (1) over the groove pin.
• Slide the extractor collar (2) over the split collet.
• Use the slide hammer (3) to push the extractor collar
over the split collet tightly.
• Use the slide hammer to remove the groove pin.

Camshaft Bushings – Removal

Use camshaft bushing driver set, Part No. 3376637, and
driver, Part No. 3375861, to remove bushings No. 1
through No. 7.
Remove the No. 1 bushing first and then the remaining
six (6) bushings in order from front to rear.

To remove bushings No. 1 through No. 7, insert the tool
assembly through the camshaft bore until the driver is
against the bushing.
Hit the slide hammer against the shaft assembly until the
bushing is driven from the bore.

To remove the No. 7 bushing during in-chassis camshaft
bushing removal, insert the tool assembly through the
bore until the pins of the puller assembly are engaged
behind the bushing.

09. July 2019 by samuel07042012
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