Piston & Connecting Rod Description; Standard Procedure - Piston To Cylinder Bore Fitting; Removal - Chrysler PT Cruiser Service & Repair Manual

PT
CRANKSHAFT OIL SEAL - REAR (Continued)
Fig. 75 Rear Crankshaft Seal—Installation
1 - SPECIAL TOOL 6926–2 INSTALLER
PISTON & CONNECTING ROD
DESCRIPTION
Non-Turbo
The pistons are made of a cast aluminum alloy.
The pistons have pressed-in pins attached to forged
powdered metal connecting rods. The pistons pin is
offset 1 mm (0.0394 in.) towards the thrust side of
the piston. The connecting rods are a cracked cap
design and are not repairable. Hex head cap screws
are used to provide alignment and durability in the
assembly. The pistons and connecting rods are ser-
viced as an assembly.
Turbo
The pistons are made of a cast aluminum alloy.
The pistons have full floating pins attached to forged
steel connecting rods. The pistons pin is offset 1 mm
(0.0394 in.) towards the thrust side of the piston. The
connecting rods are a cracked cap design and are not
repairable. Hex head cap screws are used to provide
alignment and durability in the assembly. The con-
necting rod has an oil squirt hole to provide extra
ENGINE 2.4L DOHC
cylinder wall lubrication. The pistons and connecting
rods are serviced as an assembly.
STANDARD PROCEDURE - PISTON TO
CYLINDER BORE FITTING
NOTE: Pistons and cylinder bores should be mea-
sured at normal room temperature, 21°C (70°F).
Piston and cylinder wall must be clean and dry.
Piston diameter should be measured 90 degrees to
piston pin.
Non-Turbo:
• Measurement should be taken approximately 14
mm (0.551 in.) from the bottom of the skirt as shown
in (Fig. 76).
Turbo:
• Measurement should be taken approximately 22
mm (0.866 in.) from the bottom of the skirt as shown
in (Fig. 77).
Cylinder bores should be measured halfway down
the cylinder bore and transverse (measurement loca-
tion B) to the engine crankshaft center line shown in
(Fig. 78). Refer to for Engine Specifications (Refer to
9 - ENGINE - SPECIFICATIONS). Correct piston to
bore clearance must be established in order to assure
quiet and economical operation.
Fig. 76 Piston Measurement
1 - PISTON DIAMETER
2 - 14 mm (0.551 in.)

REMOVAL

(1) Remove cylinder head (Refer to 9 - ENGINE/
CYLINDER HEAD - REMOVAL).
(2) Remove oil pan (Refer to 9 - ENGINE/LUBRI-
CATION/OIL PAN - REMOVAL).
(3) Remove Balance Shaft Carrier Assembly (Refer
to 9 - ENGINE/VALVE TIMING/BALANCE SHAFT
CARRIER - REMOVAL).
(4) Remove top ridge of cylinder bores with a reli-
able ridge reamer before removing pistons from cyl-
inder block. Be sure to keep tops of pistons
covered during this operation.
9 - 195