Dodge RAM TRUCK 1500 1995 Service Manual page 400

B R IGNITION SYSTEMS 80 - 27
turn. Note the position of the number one cylinder
spark plug cable (on the cap) in relation to rotor. Ro­
tor should now be aligned to this position.
DISTRIBUTOR J93I4-81
Fig. 12 Rotor Alignment Mark
(9) Disconnect camshaft position sensor wiring
harness from main engine wiring harness.
(10) Remove distributor rotor from distributor
shaft.
(11) Remove distributor holddown clamp bolt and
clamp (Fig. 13). Remove distributor from vehicle.
Fig. 13 Distributor Holddown Clamp
C A U T I O N :
Do not crank engine with distributor re­
moved. Distributor/crankshaft relationship will be
lost.
INSTALLATION
If engine has been cranked while distributor is re­
moved, establish the relationship between distributor
shaft and number one piston position as follows:
Rotate crankshaft in a clockwise direction, as
viewed from front, until number one cylinder piston
is at top of compression stroke (compression should
be felt on finger with number one spark plug re­
moved). Then continue to slowly rotate engine clock­
wise until indicating mark (Fig. 11) is aligned to 0
degree (TDC) mark on timing chain cover.
(1) Clean top of cylinder block for a good seal be­
tween distributor base and block.
. (2) Lightly oil the rubber o-ring seal on the distrib­
utor housing.
(3) Install rotor to distributor shaft.
(4) Position distributor into engine to its original
position. Engage tongue of distributor shaft with slot
in distributor oil pump drive gear. Position rotor to
the number one spark plug cable position.
(5) Install distributor holddown clamp and clamp
bolt. Do not tighten bolt at this time.
(6) Rotate the distributor housing until rotor is
aligned to CYL. NO. 1 alignment mark on the cam­
shaft position sensor (Fig. 12).
(7) Tighten clamp holddown bolt (Fig. 13) to 22.5
N-m (200 in. lbs.) torque.
(8) Connect camshaft position sensor wiring har­
ness to main engine harness.
(9) Install distributor cap. Tighten mounting
screws.
(10) Install all spark plug cables in correct firing
order to distributor cap. Refer to the Specifications
section at the end of this group for spark plug cable
order. Be sure all spark plug cables are firmly con­
nected into distributor cap towers.
(12) Install air cleaner assembly and connecting
tubes.
(13) Connect negative battery cable to battery.
(14) Refer to the following, Checking Distributor
Position.
CHECKING ilSTRIBUTOR POSITION
To verify correct distributor rotational position,
connect the DRB scan tool to the data link connector.
The data link connector is located in the engine com­
partment. Gain access to the SET SYNC screen on
the DRB.
W A R N I N G : W H E N P E R F O R M I N G T H E F O L L O W I N G
T E S T , T H E E N G I N E W I L L B E R U N N I N G . B E C A R E ­
F U L N O T T O S T A N D I N L I N E W I T H T H E F A N
B L A D E S O R F A N B E L T . D O N O T W E A R L O O S E
C L O T H I N G .
Follow the directions on the DRB screen and start
the engine. With the engine running, the words IN
RANGE should appear on the screen along with 0°.
This indicates correct distributor position.
If a plus (+) or a minus (-) is displayed next to the
degree number, and/or the degree displayed is not
zero, loosen but do not remove the distributor hold-
down clamp bolt. Rotate the distributor until IN
RANGE appears on the screen. Continue to rotate