MEI Premium Range of Automatic Slack Adjusters

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Madras Engineering Industries

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MEI Air Disc Brake Range

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MEI Announce their New Range

Of Air Disc Brake Calipers

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Produced In Our Purpose Built State of the Art Production Facility

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All MEI Facilities are ISO/TS16949 & ISO9001 Certified

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Pad Replacement

Remove the wheel (referring to the vehicle manufacturer’s recommendations). Remove the pad retainer by removing the spring clip and washer then depressing the pad retainer to remove the pin. If necessary remove any pad wear warning indicator (PWWI) cable & clips (note the cable arrangement for fitting a new PWWI).

! Depending on the orientation of the caliper the brake pads could fall out when removing the pad retainer.

Maint Pad1 Maint Pad2 Maint Pad3

Remove the adjuster cap. Fully wind back the tappets, using a 10mm ring spanner or socket wrench, by turning the adjuster anti-clockwise as viewed from air chamber side.

! Never exceed a maximum torque of 25 Nm in either direction, and never use power tools.

Note: when turning anti-clockwise a noticeable clicking can be heard & felt.

Maint Pad4 Maint Pad5

Remove the worn brake pads and then check the caliper sliding. Note that the geometry of the LC225 brake requires that the caliper is pulled towards the outboard side first in order to remove the outboard pad and then pushed towards the inboard side to remove the inboard pad.

Check the rubber boots and replace if necessary. Clean the pad abutments of the carrier if required, taking care not to damage the rubber boots. Check the brake disc thickness and for signs of heavy grooving, cracking or corrosion.

Fully wind back the tappets using a 10mm ring spanner or socket wrench by turning the adjuster anti-clockwise as viewed from air chamber side and fit the new brake pads. Note that the geometry of the LC225 brake requires that the caliper is pushed towards the inboard side to fit the inboard pad first and then pulled towards the outboard side to fit the outboard pad.

Maint Pad6 Maint Pad7

! You must always replace the brake pads on both brakes across an axle.
! Ensure old brake pads are disposed of in accordance with local environmental regulations.

Turn the adjuster clockwise until the pads come into contact with the disc – do not exceed 25 Nm torque. Turn back the adjuster anti-clockwise 3 clicks and check the pad-to-disc running clearance – there should be free rotation of the disc. Refit the adjuster cap.

Maint Pad8 Maint Pad9 Maint Pad10

Locate the new pad retainer in the slot in the caliper and depress to enable the insertion of the pad retainer pin. Locate the washer over the pad retainer pin, then press the clip through the pad retainer pin to secure.

Maint Pad11 Maint Pad12 Maint Pad14


Note: it is recommended that pad retainer pin, where possible, is installed with pin head uppermost.


If applicable, fit a new pad wear warning indicator (PWWI) cable & clips in the same orientation as they were removed.

Maint Pad13b Maint Pad15

Replace the wheel in line with the vehicle manufacturer’s recommendations. Uncage the spring brake and apply the parking brake prior to removing the chocks from the vehicle. After releasing the parking brake, apply the brake 10 times then road test the vehicle to bed the pads and check the brake performance.

! Remember that there may be a lower performance during the bedding-in phase of the new brake pads.

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