MOTOR VEHICLE INSPECTION CHAPTER 2951 3. Aim Inspection ...

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Supp. #S4

MOTOR VEHICLE INSPECTION

3. Aim Inspection Limits for Upper Beam a. Vertical Aim Inspection-Reject if the center of the high intensity zone is above the

CHAPTER 2951

horizontal line or more than 4 inches below. (For maximum efficiency aim 2 inches below horizon tal line).

SIMPLIFIED AIM INSPECTION CHART FOR 5%" TYPE 1 and 7" EXCEPT TYPE 2 SEALED BEAM HEADLAMPS (as viewed on a test machine in front of the vehicle) CAl AXIS

VERTICAL CENTU LINE AHEAD ~ LEFT HEADLAMP

V.iRTICAL CENTER LINE AHEAD Of liGHT HEADLAMP

CENTER LINES OF SCREEN AND HORI ZONTAL CENTER LINE Of LAMP

INSPECT RIGHT LAW SAME AS LEfT

CENTER Of HIGH INTENSITY ZONE (HOT SPOT) MUST IE WITHIN THIS AREA

Figure 2 Aim Inspection Limits for Upper Beam (Follow manufacturer's recommendations for proper instruction, per equipment used, to meet above specifications.) than 2 inches above or below the horizontal line. (For maximum efficiency aim top edge on horizontal line.) b. Lateral Aim Inspection----'Reject if the left edge of the high intensity zone is to the left of the vertical center line or more than 6 inches to the right. (For maximum efficiency aim left edge 2 inches to right of vertical center line.)

4. The headlamps listed below are to be inspected and aimed on the LOWER BEAM: a. 5% in. Type 2 Sealed Beam-candlepower required 5000 b. 7 in. Type 2 Sealed Beam-candlepower required 5000 5. Aim Inspection Limits for Lower Beam a. Vertical Aim Inspection-Reject if the top edge of the high intensity zone is more

SIMPLIFIED AIM INSPECTION CHART FOR 5%" AND 7" TYPE 2 SEALED BEAM HEADLAMPS (as viewed on a testing machine in front of the vehicle) CAR AXIS

VERTICAL CENTER LINE AHEAD Of LEFT HEADLAMP CENTER LINES Of SCREEN AND HORIZONTAL CENTER LINE Of

VERTICAL CENTER LINE AHEAD Of RIGHT HEADLAMP ,.---+--TOP EDGE Of HIGH INTENSITY ZONE MUST IE WITHIN THIS AREA

LEFT EDGF. Of HIGH IN~_~:: :::::::::I....TENSITY ZONE MUST IE WITHIN THIS AREA

NSPECT RIGHT LAMP SAME AS LEFT

Figure 3 AIM INSPECTION LIMITS (Follow manufacturer's recommendations for proper instructions, per equipment used, to meet above specifications.)

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CHAPTER 2951

MOTOR VEHICLE INSPE)CTION

Supp. #54

a. 5%, in. Type 2 Sealed Beam-candlepower required 5000 (lower beam) b. 7 in. Type 2 Sealed Beam-candlepower required 5000 (lower beam) 5.a. Vertical Aim-Reject if graduation is higher than 1;2 down or lower than 31;2 down. Mechanical aimer should be set at 2 down when reaiming. b. Lateral Aim-Reject if graduation is to the left of straight ahead or more than 4 right. Mechanical aimer should be set at 1;2 right of straight ahead when reaiming. (E) All Single Beam Headlamps Are To Be Inspected And Aimed As Follows: (Candlepower required 3500) 1. Vertical Aim Inspection-Reject if the top edge of the high intensity zone is less than 5 inches or more than 8 inches below the horizontal line which represents the level of the lamp center. (For maximum efficiency aim 6lA! inches below horizontal line.) 2. Lateral Aim Inspection-Reject if the center of the high intensity zone is more than 3 inches right or left of the vertical center line. (For maximum efficiency aim center of the vertical center line.)

(D) Lamp Inspection and Aiming-Mechanical Method (Headlamp Aimers) 1. All requirements under 29'51-1.06 (2) (B) shall be adhered to. If a mechanical aimer is employed for the inspection of aiming of mechanically aimable lamps, the device must conform to the Society of Automotive Engineers Recommended Practice, Headlamp Aiming Device for Mechanically Aimable Sealed Beam Headlamp Units. 2. The headlamps listed below are to be inspected and aimed as follows: a. 5~ in. Type 1 Sealed Beam-candlepower required 7000 (upper beam) b. 7 in. Sealed Beam, except Type 2candlepower required 5000 (upper beam) 3. Aim Inspection Limits a. Vertical Aim-Reject if graduation is higher than Y2 down or lower than 3lA! down. Mechanical aimer should be set at a 2 down when reaiming. b. Lateral Aimer-Reject if graduation is more than 4 to the right or left of straight ahead. Mechanical aimer should be set at 0 (straight ahead) when reaiming. 4. The headlamps listed below are to be inspected and aimed as follows:

SIMPLIFIED AIM INSPECTION CHART FOR SINGLE BEAM HEADLAMPS (as viewed on a testing machine in front of the vehicle) CAR AXIS

VERTICAL CENTER LINE AHEAD Of LEFT HEADLAMP

V,iRTICAL CENTER LINE AHEAD Of RIGHT HEAD LAMP

CENTER LINES OF SCREEN AND HORI ZONTAL CENTER LINE Of LAMP

S"

.t

r---..~~81j1

I

_

3" CENTER Of HIGH INTENSITY ZONE (HOT SPOT) MUST BE WITHIN THIS AREA

3"~ .:l

INSPECT RIGHT LAMP SAME AS LEFT

Figure 4 AIM INSPECTION LIMITS (Follow manufacturer's recommendations for proper instructions, per equipment used, to meet above specifications.) (9)

STEERING: Steering should be inspected to determine that steering linkage is not worn or jammed. Wear and adjustment of the steering system can be checked by measuring lash (play). 2. Lash (play) is a condition where the steering wheel can be turned through some

part of a revolution without front wheel motion. 3. A vehicle with more than 2 inches lash (play) measured at the steering wheel rim with road wheels in straight ahead position. on wheels up to and including 18 inches in diameter, 3 inches on wheels over 18 inches, should be rejected. On cars equipped with

(A) 1.

48


Supp. #54

power steering, the engine should be running. 4. The operator of the car should be notified if the power steering drive belt appears to be loose or in poor condition. [If you can hear it slipping when checking lash (play).J 5. On vehicles equipped with flexible couplings or energy absorbing steering columns, it is obvious through a visual inspection from outside the vehicle that the column has been damaged and is in an unsafe condition, the vehicle should be rejected. 6. Wear in the king pin (if used) can be inspected by observing the play about the horizontal axis of the plane of the front wheel (See Figure 5). The car should be rejected if the play exceeds the values listed in the following table:

CHAPTER 2951

MAXIMUM PERMISSIBLE PLAY (With Wheel Bearings Properly Adjusted) Wheel Size

Play in excess of

Up to and including 16 in. Over 16 and including 18 in. More than 18 in.

l;4

in.

% in.

V2 in.

7. Wheel bearing adjustment may be inspected by placing hands on top and bottom of wheel and working wheel in and out. Reject Vehicle if there is noticeable play between brake drum and brake backing plate, or evidence of damaged or badly underlubricated wheel bearings.

Front of Wheel Top of Wheel

\

I\ I \ I \ I \

• •

.,. 1

I Ploy Figure 5

49

Play (Front Wheel)

CHAPTER 2951


(B) Suspension BALL JOINT INSPECTION FOR WEAR

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can be accomplished only when the suspension ball joints are unloaded.

This is accomplished only by hoisting the vehicle by the lower control arm when the spring is supported by the lower control arm. (See Figure 6 ) OR carrying joint

FOR BALL JOINT INSPECTION Figure 6

Load carrying ball joint by hoisting the vehicle by the frame when the spring is supported by the upper control arm. (See Figure 7)

Non-load carrying ball joint FOR BALL JOINT INSPECTION Figure 7

Causes for rejection 1. Perceptible movement of the non-load carrying ball joint (The upper ball in Figure 6 and the lower ball joint in Figure 7.) 2. Excessive wear of the load carrying ball joint if the horizontal movement of the

tire during rocking (See Figure 8 or 9) exceeds the manufacturer's tolerance, or if the vertical movement (See Figure 10 or 11) exceeds the manufacturer's tolerance. Manufacturer's tolerances are shown in Tables I and II.

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CHAPTER 2951


Supp. #S4

MAX.

Non-load ball

HORIZONTAL

MOVEMENT

I'

MAX.

TOL.

Non-load carrying ball joint Rock tire top and bottom. Replace if horizontal movement at tire sidewall exceeds maximum tolerance. See Table II.

Rock tire top and bottom. Replace if horizontal movement at tire sidewall exceeds maximum tolerance. See Table I. Figure 8

Figure 9

Load

ball joint MAX.

VERTICAL MOVEMENT

TOL.

Load carrying ball joint Replace if vertical movement between lower arm and spindle exceeds maximum tolerance. See Table 1.

Replace if vertical movement between upper ar~ and spindle exceeds maximum tolerance. See Table II. Figure 11

Figure 10

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CHAPTER 2951

TAB L E BALL JOINTS - MANUFACTURER'S TOLERENCES

SUSPENSION

~

SPRING ON LOWER ARM

I

Aift I ~

)

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l.

Insta.ll floor sta.nds under both RH and LH lower control arms , outboard as far as po.a ible . Car muat be stable.

2.

Upper arm muat be free from rubber bumper.

+ ~

t +

3.

Wheel bear ing8 muat be properly adjusted .

4.

Check ball joints according to chart.

LOW E R

B ALL

J 0 I NT

Upper Ball ~

!!QM!,

~

VERT!CAL MOVEMENT

HORIZONTAL

~~

'F,f ....... .J}{Th ,0 ~ 10

I'

.· :If'

~-,.t=F ~ . i

!

t

I~l:::

MAX.'

~TOL.

Replace if vert iea 1 movement between lower arm and spind Ie

exceeds max imum tolerance.

Rock. tire top and bottom.

Chrysler DeSoto Dodge

~

Imperial Plymouth Va 1 iant Dart (Lancer) Edsel Ford

'-U

Lincoln

0 0

Mercury

V")

-.I

57-67 57-61 57-67 57-67 57-67 60-67 60-67

im~

.050 .050 .050 .050 .050 .0 50 .0 50

.250

58-60

. 200

.2 50

54-56 57-6/61 7/6 1-67

Zero .200 Zero

.250

52-56 57-67

Zero

.250

54-56 57-6/61 7/61-67

Zero .2 00 Zero

. 200

.2 50

)-.I

CO

Thunderbird

i::: Q...

55-57 58-60

~~-66

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FIGURE 2

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1.0R-W~IO. SECTION

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MATERIAL : HARDWOOD

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