EFLE61 - Optical adjustment device BOSCH - Free user manual and instructions

Product type	Optical adjustment device (mobile headlight adjuster)
Brand	Bosch
Model	EFLE61
Main functions	Alignment of headlights along the vehicle's longitudinal axis, adjustment of beam inclination, measurement of illuminance (lux meter)
Power supply	Manual (no external power source)
Dimensions (approx.)	Adjustable height, lens about 30 cm from the headlight
Weight	Not specified, transportable on wheels
Maintenance and cleaning	Clean the lens and mirror with a soft cloth; lubricate the wheels occasionally with a few drops of oil; keep the guide column dry and free of grease
Safety	Protect from shocks, handle with care; regularly check measurement accuracy
Spare parts and repairability	Maintenance contract recommended with a Bosch service point
General information	Used for vehicle headlight adjustment in accordance with legal requirements; available in mobile version (EFLE61) or on rails (EFLE62)

Frequently Asked Questions - EFLE61 BOSCH

How to install the alignment mirror and maneuvering handle on the EFLE61?

Before first use, loosen the stop screw (1) on the bracket using a 4 mm Allen key, rotate the mirror arm 180° upward, then retighten the screw. Then, loosen the screw (1) at the bottom of the mount with a 5 mm wrench, rotate the handle 90° outward, then retighten.

What are the prerequisites for correct headlight adjustment?

The control area must be flat (flatness deviation < 1.2 mm for EFLE61). Tire pressure must comply with specifications. Headlights must be in good condition (lenses, reflectors, bulbs). For headlights with manual adjustment device, place it in the prescribed locking position.

How to align the EFLE61 on the vehicle's longitudinal axis?

For a flat hood vehicle, orient the alignment mirror toward the operator, then align the device so that the line of sight evenly aligns with two symmetrical external reference marks (top edge of headlights, hood contours). For a cab-over vehicle, mark the center of the headlights on the ground with a plumb line.

How to set the inclination value on the EFLE61?

Use the rotary knob (2) on the device (figure 4) to set the adjustment value corresponding to the desired inclination (in cm/10 m). Before checking, load the vehicle according to specifications.

How to interpret the images projected on the screen?

The images can be observed from the rear thanks to the deflection mirror. For asymmetrical low beam headlights, the boundary between the dark zone and the lit zone should align with the separation line to the left of the center. For high beams, the center of the beam should be in the small rectangle around the center mark.

How to use the lux meter on the EFLE61?

Set the adjustment value rotary knob to 10 cm/10 m. For low beams, press the lux meter button: the needle on the 'A' scale must remain in the green sector (intensity < glare value). For high beams, the needle on the 'F' scale must reach the green sector (minimum permissible intensity).

What regular maintenance is necessary for the EFLE61?

Protect the device from shocks and handle it with care. Check measurement accuracy at regular intervals. Lubricate the wheels with a few drops of oil. Keep the guide column dry and free of grease. Clean the lens and mirror with a soft cloth.

Does the EFLE61 require electrical power?

No, the EFLE61 is a manual optical device. It requires no external power source. The lux meter operates via an analog mechanism.

What are similar models to the EFLE61?

The mobile models of the EFLE series include EFLE50, EFLE51, EFLE60, and EFLE61. The rail-mounted versions are EFLE52 and EFLE62. All are designed for vehicle headlight adjustment.

Where can I find spare parts for the EFLE61?

Bosch recommends taking out a maintenance contract with a competent Bosch service point. Checks and repairs must be carried out by qualified personnel using appropriate control devices.

USER MANUAL EFLE61 BOSCH

Headlight Aiming Device EFLE 50..52/60..62

Régophare EFLE 50..52/60..62

Alineador de faros EFLE 50..52/60..62

Instructions for putting into operation 9

1. General 9
   1.1 Mobile headlight aiming devices EFLE 50, EFLE 51, EFLE 60 and 61 9
   1.2 Headlight aiming device on floor rails EFLE 52 and EFLE 62 10
2. Prerequisites for aiming the headlamps 10
   2.1 Operating site 10
   2.2 Tire-inflation pressure 10
   2.3 Headlamps 10
   2.4 Setting up aiming device 11
   2.5 Aligning the aiming device with the longitudinal axis of the vehicle 11
   2.6 Adjusting the aiming device 11
3. Aiming regulations 11
   4.Measuring images 12
   4.1 Headlamps with asymmetrical lower beam 12
   4.2 Headlamps with symmetrical lower beam, and fog lamps 12
   4.3 Headlamps with inclination data 12
4. Luxmeter 13
5. Maintenance and care 13

Page

Indice Pagina

Instructions for putting into operation

Before the headlight aiming device is put into initial operation the alignment mirror and the handle on EFLE 50, 51, 60 and 61 must be turned to the working position.

Operations required to do this

Release the locking screw (1) on the equipment support column using a 4mm hexagon-socket screw key.
- Swing the arm holding the alignment mirror 180^ upward (2).
Tighten the locking screw again.

Fig. 1

Operations required to do this

Release the locking screw (1) on the equipment support column using a 5mm hexagon-socket screw key.
- Swing the handle 90^ outwards.
- Insert the locking screw in the hole and tighten.

Fig. 1a

1. General

Headlamps on motor vehicles must not blind the drivers of vehicles coming from the opposite direction. The inclination and the aiming of the headlamp light beam to the side must therefore be adjusted according to legal specifications.

In order to make these legally specified adjustments of motor-vehicle headlamps, Bosch supplies the following aiming devices:

1.1 Mobile headlight aiming devices EFLE 50,EFLE 51,EFLE 60 and 61

The surface on which the headlight aiming device is set up must be even but it does not have to be horizontal. In order to achieve the specified measurement accuracy, surface irregularities within the area where the aiming device is used must be less than 1.2mm

Fig. 2

1 alignment mirror
2 handle
3 luxmeter
4 deflection mirror
5 markings for lens center

1.2 Headlight aiming device on floor rails EFLE 52 and EFLE 62

The standing surface for the vehicle and the guide rails of the apparatus must be horizontal and parallel to one aonther. In order to achieve the prescribed measuring exactness, the horizontal deviation of the guide rails must not be more than 1.3mm out of line with respect to one another.

Fig. 3

1 Roatary knob for aligning the test device with the longitudinal axis of the vehicle.

2. Prerequisites for aiming the headlamps

2.1 Operating site

The operating site must meet the conditions specified in Sections 1.1 and 1.2 above.

2.2 Tire-inflation pressure

All tires must be inflated to the pressure specified for the particular vehicle.

2.3 Headlamps

Deflective lenses and reflectors, as well as blackened bulbs must be replaced before the aiming adjustment.

With headlamps that are fitted with an adjusting device, observe the following:

In order to aim headlamps on vehicles fitted with a device for infinitely variable adjustment of the headlamps by hand, the adjusting device must be in the specified detent position.

When the headlamps are fitted with an adjusting device that can be set to only 2 detent positions, proceed as follows:

• With vehicles in which the headlamp beams are directed upward as the load increases (loading space at the black), the headlamps should be aimed with the adjusting device in the "high" lightbeam detent position.
• With vehicles in which the headlamp beams are directed downward as the load increases (loading space at the front), the headlamps should be aimed with the adjusting device in the "low" light-beam detent position.

2.4 Setting up aiming device

The distance between the aiming device and the headlamp should be just enough so that setting operations can also be carried out on the headlamp from in front (about 30~cm ).

The center of the lens on the aiming device should differ by less than 3cm from the headlamp center. The center of the lens is identified by marks (see Fig. 2, No. 5).

In order to adjust the height of the aiming device, the hand roller ist turned (1) and a brake is released. The brake automatically looks in place again when the roller is released.

Fig. 4

1 control knob for height adjustment
2 rotary knob for setting the inclination measure

2.5 Aligning the aiming device with the longitudinal axis of the vehicle

2.5.1 Vehicles with flat engine-compartment lid

By swinging the mirror arm (Fig. 1, Pos. 2) the alignment mirror (Fig. 2, Pos. 1) is set above the head towards the operator so that the front of the vehicle with two outer symmetrical reference points (for example, the upper edge of the headlamps, joints in the engine hood, etc.) are visible in it.

The aiming device is aligned on the longitudinal axis of the vehicle so that the positioning line on the mirror touches these two outer reference points equally (see Fig. 5).

With the mobile aiming devices (EFLE 50, 51, 60 and 61), this is done by moving the aiming device using the wheeling handle.

The floor-rail aiming device (EFLE 52 and 62) is turned as required with the rotary knob at the top of the support column (Fig. 3, No. 1).

Fig. 5

2.5.2 Cab-over-engine vehicles

In vehicles with vertical front section the centres of the headlights are marked with chalk on the floor using a plumb bob. The centres can be connected with a rail. These markings are lined up in the adjusting mirror.

Fig. 6

2.6 Adjusting the aiming device

The setting used for aiming headlamps is the inclination value in cm which the cut-off must have at a distance of 10m

This setting is given in Section 3.1, and is made before the test at the rotary knob (Fig. 4, No. 2).

The vehicle should be loaded as specified.

3. Aiming regulations

Please observe the aiming regulations valid in your country.

4. Measuring images

The measuring images can also be observed from the rear of the aiming device by means of the deflection mirror (Fig. 10, No. 3).

Before every measurement the prerequisites given in Section 2 above must be complied with.

4.1 Headlamps with asymmetrical lower beam

With headlamps used for an asymmetrical lower beam, the lower beam cut-off line must coincide with the boundary line to the left of the center point. The point of intersection between the left-hand part of the lower beam cut-off line (as horizontal as possible) and the right-hand rising part of this line must be located on the vertical line that passes through the center mark. In order to determine this point of intersection more easily, the left-hand half of the handlamp can be alternately masked and unmasked serveral times.

After the lower beam cut-off line has been set according to specifications, the center of the high beam with headlamps on which the lower beam and upper beam can be aimed together must lie within the limit corners inscribed around the center mark.

With high-beam headlamps fitted with their own adjustment mechanisms, the center of the light beam must be positioned on the center mark.

4.2 Headlamps with symmetrical lower beam, and fog lamps

With headlamps used for a symmetrical lower beam and with fog lamps, the highest part of the lower beam cut-off line must touch the boundary line, must be as horizontal as possible across the width of the test surface.

To the side, these headlamps must be aimed so that the distribution of the light is as symmetrical as possible with respect to the vertical line that passes through the center mark.

After the lower beam cut-off line has been set according to specifications, the center of the high beam with headlamps on which the lower beam and upper beam can be aimed together must lie within the limit corners inscribed around the center mark (see Fig. 8).

With high-beam headlamps fitted with their own adjustment mechanisms, the center of the light beam must be positioned on the center mark (see Fig. 8).

Example: Boundary line for the lower eam cut-off with an asymmetrical lower beam.

Fig. 7

Example: Center mark and boundary corners for the center of the higt beam.

Fig. 8

Example: Boundary line for the lower beam cut-off with a symmetrical lower beam and with fog lamps.

Fig. 9

4.3 Headlamps with inclination data

In the case of single-axle towing vehicles or machines with headlamps permanently set to the lower beam and on which the inclination of the light beam center is given, the center of the beam must lie on the boundary line and on the vertical line that passes through the center mark.

5. Luxmeter

Using the luxmeter, the illumination from the headlamps can be tested (measured) after they have been aimed.

During these tests the rotary knob for the setting must always be set to the position 10cm / 10m

Lower beam: The illumination must be below the permissible glare value. Press the pushbutton on the luxmeter. The pointer must remain within the green range on the scale marked "A".

High beam: The illumination must reach the minimum permissible value. The pointer must come up to the green range on the德拉 marked "F".

Fig. 10

1 Push button for luxmeter
2 Scale for luxmeter
3 Deflection mirror

6. Maintenance and care

The headlight aiming device is a high-precision optical measuring instrument. In order to preserve its measurement accuracy, shocks and rough handling must be avoided.

At regular intervals its accuracy is to be checked.

This is especially important for workshops which carry out their work according to legal regulations.

For this purpose we recommend that a maintenance contract be concluded with the responsible Bosch Customer Service. This will ensure that the aiming device will be checked and tested by trained personnel using the right test equipment and according to plant specifications.

For maintenance purposes the wheels should be lubricated occasionally with a few drops of oil.

The support column must be kept dry and free of grease and oil!

Wipe the lens and the reflector with a soft cloth to keep them clean.

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