13 PISTON AND CONNECTING ROD ASSEMBLIES
To check the piston height
above the cylinder block13A-03A
Special tools:
Piston height tool, PD.41D
Dial gauge for use with PD.41D, PD.208
Put the piston height tool on the face of the cylinder
block and rotate the gauge dial to the zero position.
Rotate the crankshaft until the piston is
approximately at top dead centre (TDC). Carefully
put the tool over the top of the piston with the
plunger of the gauge in contact with the piston
above the axis of the gudgeon pin (A). Rotate the
crankshaft to ensure that the piston is at the
highest position and make a note of the gauge
indication.
For engines fitted with "Quadram" pistons, the
piston height above the face of the cylinder block
should be 0,14/0,36 mm (0.005/0.014 in).
For engines fitted with "Fastram" pistons, grades A
to L, the piston height above the top face of the
cylinder block should be 0,38/0,50 mm
(0.015/0.020 in)
Notes:
• Two "Quadram" piston heights can be used in
the factory: "H" - high, "L" - low. In service only
"L" pistons are supplied. If an "L" piston is used
instead of an "H" piston, the height may be up to
0,19 mm (0.0075 in) below the bottom limit.
• The top of the piston should not be machined.
• If the original piston is used, ensure that it is
assembled to the correct connecting rod and is
used in the original cylinder.
PA078
13A.08 Perkins Phaser/1000 Series, April 1995
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