86 10... Removing brake shoes

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The wheels of the multi-trailers must be able to rotate freely. Adjust and check brake system after installing brake shoes.

Unhook tension spring (1) from tension spring mount (2).

Fig 1: Identifying Tension Spring With Tension Spring Mount

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CAUTION: Once nut (1) of pull rod (2) has been released, do not move handbrake lever. Handbrake lever can flick upwards.

Release nut (1) on pull rod (2) and remove hexagon nut. Slide brake compensator (3) towards rear.

Installation

Use new self-locking nut.

Fig 2: Identifying Pull Rod With Nut And Brake Compensator

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Grip openings (1) in wheel trim (2) with both hands and pull off wheel trim (2).

Fig 3: Identifying Grip Openings In Wheel Trim

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Release wheel bolts (1) and remove disk wheel (2).

Installation

Tightening Torque,

Refer to TIGHTENING TORQUE 86 10 19AZ.

Fig 4: Identifying Disk Wheel With Bolts

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Turn brake shoe adjusting screw (2) on brake carrier (1) in direction of arrow and release fully. The brake shoes do not rest against the drum.

Fig 5: Turning Brake Shoe Adjusting Screw On Brake Carrier

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Lever off cap (1).

Fig 6: Identifying Brake Hub Cap

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Release nut (1) and remove. Pull off brake hub (2) with both hands.

Installation

Only a new nut is permitted for reinstallation.

Tightening Torque,

Refer to TIGHTENING TORQUE 86 10 20AZ.

Do not screw off brake hub under any circumstances.

Fig 7: Identifying Brake Hub With Nut

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To illustrate more clearly the work steps in Fig 8, Fig 9 and Fig 10, the wheel brake has been detached from the axle.

This procedure is not necessary for removing the brake shoes.

Push back cable (1).

Fig 8: Pushing Cable

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Remove shell (1).

Fig 9: Removing Shell

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Remove brake cable (1) from mounting (2).

Fig 10: Removing Brake Cable From Mounting

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Unhook pressure spring (1) from fixed brake shoe (2) and brake carrier (3).

Fig 11: Identifying Brake Carrier And Brake Shoe With Pressure Spring

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Remove tension spring (1) from both brake shoe fixtures (2).

Remove brake lever assembly (3).

Installation:

The fixed part of the brake lever assembly (3) is seated on the moving brake shoe. The moving part of the brake lever assembly is seated on the fixed brake shoe.

Fig 12: Identifying Brake Shoe Fixtures With Tension Spring And Brake Lever Assembly

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Pull brake shoes (1) apart in direction of arrow, tilt forward and remove from adjustment device (2).

Installation

Always replace the four shoes and use the same make.

Minimum lining thickness: 1.5 mm

Fig 13: Pulling Brake Shoes

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Check adjustment device (1).

Check wedge (2) and setting pins (3) for ease of movement and wear.

Apply grease if necessary.

Check brake cables for ease of movement and wear.

Fig 14: Identifying Adjustment Device And Wedge With Setting Pins

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