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1106 Perkins diesel engine - Cylinder Block and Cylinder Head (Inspect and adjust)
Clean all of the coolant passages and the oil passages. Check the
cylinder block for cracks and damage. The top deck of the cylinder block
must not be machined. This will affect the depth of the cylinder liner
flange and the piston height above the cylinder block. Check the front
camshaft bearing for wear.
If a new bearing is needed, use a suitable adapter to press the bearing
out of the bore. Ensure that the oil hole in the new bearing faces the
front of the block. The oil hole in the bearing must be aligned with the
oil hole in the cylinder block. The bearing must be aligned with the
face of the recess.
Cylinder Head Inspect
Remove the cylinder head from the 1106 Perkins engine. Remove the water
temperature regulator housing. Inspect the cylinder head for signs of
gas or coolant leakage. Remove the valve springs and valves.
Clean the bottom face of the cylinder head thoroughly. Clean the coolant
passages and the lubricating oil passages. Make sure that the contact
surfaces of the cylinder head and the cylinder block are clean, smooth
and flat.
Inspect the bottom face of the cylinder head for pitting, corrosion, and
cracks. Inspect the area around the valve seat inserts and the holes for
the fuel injection nozzles carefully. Test the cylinder head for leaks
at a pressure of 200 kPa (29 psi).
Flatness of the cylinder head - (A) Side to side, (B) End to
end, (C) Diagonal
Measure the cylinder head for flatness. Use a straight edge and a feeler
gauge to check the cylinder head for flatness. Measure the cylinder head
from one side to the opposite side (A). Measure the cylinder head from
one end to the opposite end (B). Measure the cylinder head from one
corner to the opposite corner (C).
Resurfacing the Cylinder Head
The bottom face of 1106D Perkins cylinder head can be resurfaced if any
of the following conditions exist: The bottom face of the cylinder head
is not flat within the specifications. The bottom face of the cylinder
head is damaged by pitting, corrosion, or wear.
The thickness of the cylinder head must not be less than 94.80 mm
(3.7323 inch) after the cylinder head has been machined. If the bottom
face of the cylinder head is resurfaced, the recesses in the cylinder
head for the valve seat inserts must be machined. The valve seat inserts
must be ground on the side which is inserted into the cylinder head.
Grinding this surface will ensure that no protrusion exists above the
bottom face of the cylinder head.
Piston Height Inspect
If any of the following components are replaced or remachined, the
piston height above the 1106 Perkins cylinder block must be measured:
Crankshaft, Cylinder head, Connecting rod, Bearing for the piston pin.
The correct piston height must be maintained in order to ensure that the
engine conforms to the standards for emissions. The top of the piston
should not be machined. If the original piston is installed, be sure
that the original piston is assembled to the correct connecting rod and
installed in the original cylinder.
Three grades of length of connecting rods determine the piston height
above the cylinder block. The grade of length of a connecting rod is
identified by a letter or a color. The letter or the color is marked on
the side of the connecting rod.
Use Tooling in order to measure the piston height above the cylinder
block. Use the cylinder block face to zero Tooling. Rotate the
crankshaft until the piston is at the approximate top center. Position
Toolings in order to measure the piston height above the cylinder block.
Slowly rotate the crankshaft in order to determine when the piston is at
the highest position. Record this dimension.
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