Testing Aimer Calibration; Mounting Aimers; Checking Aimer Calibration; Checking Vertical Aim Calibration - Dodge D150 1990 Service Manual

8L - 8 LAMPS
(4) A d j u s t t h u m b adjusting screw o n each calibra-
t i o n fixture b y t u r n i n g either clockwise o r counter-
clockwise u n t i l level v i a l bubble registers i n a
centered, l e v e l position (Fig. 1).
(5) Look i n t o top port hole of U n i t A . T u r n horizon-
t a l knob u n t i l split image is aligned (Figs. 2 a n d 3).
FLOOR LEVEL
in
NOT ALIGNED
ALIGNED
RN981
Fig. 2 Split Image Alignment
TRANSFER READING -
HORIZONTAL DIAL
RN982
Fig. 3 Floor Level Compensating Adjustment
(6) Transfer plus or m i n u s r e a d i n g indicated on
horizontal d i a l to floor level offset d i a l o n each
aimer. Press floor level d i a l i n w a r d t o set reading
(Fig. 3).
(7) Remove c a l i b r a t i o n fixtures from b o t h u n i t s .
TESTING AIMER CALIBRATION
C a l i b r a t i o n o f the aimers m a y be lost due t o ex-
tended use. C a l i b r a t i o n fixtures used i n conjunction
w i t h aimers can be used t o check a n d adjust aimers.
(1) T u r n t h u m b adjusting screw o n each c a l i b r a t i o n
f i x t u r e u n t i l i t is approximately t h e same distance as
the s u p p o r t i n g posts (Fig. 4).
LEVEL VIAL-
CALIBRATION
FIXTURE
THUMB ADJUSTING SCREW RN983
Fig. 4 Calibration Fixture
(2) A t t a c h calibration fixtures t o each u n i t w i t h
level vials o n top (Fig. 4).
(3) Locate a t r u e v e r t i c a l plate glass w i n d o w or
smooth surface and secure aimers three t o five feet
apart so s p l i t image targets can be located i n v i e w i n g
ports (Fig. 5).
(4) Set floor level d i a l a t zero (Fig. 1).
UNIT B
OWNER
CALIBRATION
FIXTURE
VIEWING PORT
UNIT A
VIEWING PORT
RN984
Fig. 5 Checking Aimer Calibration
(5) Rotate t h u m b adjusting screws o n each calibra-
t i o n f i x t u r e u n t i l level vials o n f i x t u r e s are centered
(Fig. 6).
CALIBRATION FIXTURE LEVEL VIAL
AIMER LEVEL VIAL
VERTICAL
DIAL KNOB
RN985
Fig. 6 Checking Vertical Aim Calibration
(6) W i t h both calibration level v i a l s centered t u r n
v e r t i c a l d i a l knobs o n each a i m e r u n t i l aimer level
vials are centered. I f aimer v e r t i c a l d i a l pointers
read between 1/2 up and 1/2 down, aimers are w i t h i n
allowable v e r t i c a l tolerance. C a l i b r a t e u n i t s i f be-
yond these l i m i t s (Fig. 6).
(7) A d j u s t horizontal d i a l knob o n each a i m e r u n t i l
split image targets a l i g n . I f aimer h o r i z o n t a l d i a l
pointers read between 1 left and 1 r i g h t , t h e aimers
are w i t h i n allowable tolerance l i m i t s . Calibrate u n i t s
i f beyond these l i m i t s (Fig. 3).
MOUNTING AIMERS
(1) Snap adaptor into position o n each aimer ( F i g .
7).
USE FOR 142x200 mm
(5.6x7.9 INCH)
RECTANGULAR
HEADLAMP
J908L-61
Fig. 7 Headlamp Adaptor