Headlamp Dimmer Switch; Headlamp Aiming Procedures; Pre Aiming Instructions; Compensating The Aimers For Floor Slope - Dodge D150 1990 Service Manual

Rear wheel drive ram truck
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LAMPS
8L - 7
HEADLAMP DIMMER SWITCH
HEADLAMP AIMING PROCEDURES
REMOVAL
(1) Disconnect battery negative cable.
(2) Remove 4 screws attaching t h e lower steering
column cover (Fig. 13). T h e fuse block is attached t o
t h i s cover and should be supported w h e n cover is re-
moved.
STEERING
COLUMN
COVERS
J908K-33
Fig. 13 Steering Column Cover
(3) Disconnect electrical connector.
(4) Remove two screws o n d i m m e r s w i t c h m o u n t i n g
plate to replace, switch (Fig. 14).
IGNITION SWITCH
STEERING COLUMN
DIMMER
SWITCH
MOUNTING BOLT
ADJUSTMENT PIN
ACTUATOR
LEVER
RB1164
Fig. 14 Dimmer Switch
INSTALLATION
AND
ADJUSTMENT
(1) Position new switch. I n s t a l l t w o screws, do n o t
t i g h t e n .
(2) Insert p i n i n switch hole to lock s w i t c h i n ad-
j u s t m e n t position.
(3) Adjust switch b y pushing gently up o n s w i t c h t o
t a k e u p the rod slack.
(4) T i g h t e n screws and remove p i n .
(5) Connect electrical connector.
(6) I n s t a l l steering column cover.
PRE AIMING
INSTRUCTIONS
(1) Test d i m m e r switch operation.
(2) Observe operation o f h i g h beam indicator l i g h t
mounted i n i n s t r u m e n t cluster.
(3) Inspect f o r badly rusted or f a u l t y headlamp as-
semblies. These conditions m u s t be corrected before a
satisfactory adjustment can be made.
(4) Place vehicle on a level floor.
(5) Jounce front suspension t h r o u g h 3 oscillations
by applying body
weight t o hood or bumper.
(6) Inspect t i r e inflation.
(7) Rock vehicle sideways t o a l l o w vehicle t o as-
sume i t s n o r m a l position.
(8) I f gasoline t a n k is n o t f u l l , place a weight i n
t r u n k o f vehicle to simulate w e i g h t of a f u l l t a n k (6-
1/2 pounds per gallon).
(9) Thoroughly clean h e a d l i g h t lenses.
COMPENSATING
THE AIMERS
(C-4466) FOR
FLOOR
SLOPE
The floor level offset d i a l m u s t coincide w i t h t h e
floor slope for accurate a i m i n g . C a l i b r a t i o n fixtures
are included w i t h the aimers.
(1) A t t a c h one c a l i b r a t i o n f i x t u r e t o each aimer.
Fixtures w i l l easily snap i n t o position on aimer w h e n
properly positioned (Fig. 1).
LEVEL-VIAL BUBBLE
PASSENGER SIDE
REAR — VEHICLE — FRONT
^HORIZONTAL KNOB
CALIBRATION
FIXTURE
THUMB ADJUSTING
UNIT 0
MUST
SCREWS
BE USED AT
REAR TIRE
FLOOR LEVEL OFFSET DIAL
UNIT (g) MUST
CALIBRATION FIXTURE
BE USED AT
FRONT TIRE
RN980
Fig. 1 Determining Floor Slope
(2) Place aimers at center l i n e o f each wheel on one
side of vehicle (Fig. 1). U n i t A m u s t be placed a t rear
wheel w i t h target facing forward.
(3) U n i t B must be placed a t f r o n t wheel w i t h tar-
get facing rearward.

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