Piston Height - Inspect - Perkins 1204F-E44TA Systems Operation Testing And Adjusting

UENR4490-01
Illustration 110
Flatness of the cylinder head (typical example)
(A) Side to side
(B) End to end
(C) Diagonal
8. 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).
Refer to Specifications, "Cylinder Head" for the
requirements of flatness.
Resurfacing the Cylinder Head
The bottom face of 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.
Note: The thickness of the cylinder head must not be
less than 150.8 mm (5.93700 inch) after the cylinder
head has been machined.
This document has been printed from SPI2. NOT FOR RESALE
Note: The dimension of the valve seats to the flame
face must be corrected after resurfacing the cylinder
head. Refer to Specifications, "Cylinder Head" for the
correct dimensions for the valve seats.

Piston Height - Inspect

Table 13
Tool Number
21825617
A
21825496
B
If the height of the piston above the cylinder block is
not within the tolerance that is given in Specifications,
g02148937
"Piston and Rings", the bearing for the piston pin
must be checked. Refer to Systems Operation,
Testing and Adjusting, "Connecting Rod - Inspect". If
any of the following components are replaced or
remachined, the piston height above the 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.
Note: 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.
Required Tools
Part
Part Description
Dial Gauge
Dial gauge holder
117
Basic Engine
i04156372
Qty
1
1