Description; Verification; Removal; Valve Timing - Chrysler PT Cruiser Service & Repair Manual

PT
EXHAUST MANIFOLD (Continued)
(9) Install ignition coil and spark plug cables
(Refer to 8 - ELECTRICAL/IGNITION CONTROL/
IGNITION COIL - INSTALLATION).
(10) Connect ignition coil and capacitor electrical
connector.
(11) Connect negative battery cable.

VALVE TIMING

DESCRIPTION

The timing drive system consists of the following
(Fig. 107):
• Timing Chain
• Camshaft Sprocket
• Crankshaft Sprocket
• Right Timing Chain Guide (Movable)
• Left Timing Chain Guide (Fixed)
• Timing Chain Tensioner/Oil Reservoir Cap/Plug
with Seal Ring
The camshaft sprocket is attached to the front of
the camshaft and is used with the timing chain and
crankshaft sprocket to turn the camshaft. The cam-
shaft position sensor target is part of the sprocket
and is used with the camshaft position sensor to pro-
vide the PCM with valvetrain position information.
The timing chain tensioner is installed in the right
side of the engine block. Using engine oil pressure,
the tensioner applies constant pressure to the right
side (movable) timing chain guide, which in turn
applies pressure to the timing chain. Also as the ten-
sioner extends, it rachet locks in position to provide
constant timing chain tension. An oil reservoir cap
attaches to the timing chain tensioner to provide an
available "pocket" of oil to the tensioner during ini-
tial start up.
STANDARD PROCEDURE - VALVE TIMING

VERIFICATION

(1) Remove cylinder head cover (Refer to 9 -
ENGINE/CYLINDER
COVER - REMOVAL).
(2) Remove number one spark plug.
(3) Using a dial indicator, set number one cylinder
to TDC on the compression stroke.
(4) The mark on the camshaft sprocket should be
in line with the cylinder head cover sealing surface
(Fig. 108).
(5) Using a suitable light, look down into the tim-
ing chain cavity at the crankshaft sprocket. A paint
mark on the crankshaft sprocket should align with
the edge of the engine block boss indicated in (Fig.
109).
(6) Install cylinder head cover (Refer to 9 -
ENGINE/CYLINDER
COVER(S) - INSTALLATION).
HEAD/CYLINDER
HEAD/CYLINDER
Fig. 107 Timing Drive System
1 - CAMSHAFT TIMING MARK ALIGNS WITH SINGLE PLATED/
DIMPLED LINK
2 - CAMSHAFT SPROCKET
3 - RIGHT TIMING CHAIN GUIDE (MOVABLE)
4 - LEFT TIMING CHAIN GUIDE (FIXED)
5 - PLUG WITH SEAL RING
6 - OIL RESERVOIR CAP
7 - TIMING CHAIN TENSIONER
8 - CRANKSHAFT SPROCKET
9 - TIMING CHAIN
10 - CRANKSHAFT TIMING MARKS ALIGN WITH DOUBLE
HEAD
PLATED/DIMPLED LINKS

TIMING CHAIN COVER

REMOVAL

(1) Disconnect and isolate the negative battery
cable.
(2) Remove the power steering reservior bracket
bolts (Refer to 19 - STEERING/PUMP/RESERVOIR -
REMOVAL).
(3) Partialy drain the cooling system and discon-
nect the upper radiatior hose at the radiator.
(4) Remove the radiator cooling fan (Refer to 7 -
COOLING/ENGINE/RADIATOR FAN - REMOVAL).
HEAD
(5) Raise vehicle on hoist.
(6) Remove the right front wheel.
ENGINE 1.6L SOHC 9 - 65