Remove/install brake drum

AR42.10-T-1010B

10.11.11

MODEL 671 with REAR AXLES 748.513 /524

W42.10-0062-12

1 Brake linings

A Total lining thickness of new brake lining

B Minimum lining thickness

T42.10-0002-06

1 Brake linings

2 O-ring

3 Bell hub

4 Seal

5 Sealing ring

6 Brake drum

	Removing
	Secure vehicle to prevent it from moving by itself
1	Slacken wheel nuts
2.1	Jack up vehicle at rear axle	 Position stands under the trellis frame side member and lower vehicle onto stands.	AR00.60-T-1000-02A
		Pit lift accessories gotis://H_00.9_04.0
2.2	Jack up vehicle at center axle	Model 671.312/ 322/ 327
		 If the front axle is raised more than 750 mm, the center axle must be raised as well.
3	Remove wheels		AR40.10-T-1100A
4	Press off brake drum (6) with three bolts	 Mark position of brake drum (6) relative to bell hub (3) with a punch mark and remove.
5	Clean brake drum (6) and brake linings (1)	Perforated cover for ultrasonic cleaning unit
	Guidelines for cleaning brake linings		AH42.10-N-0005-01A
	Checking
6	Check thickness of brake linings (1)	 The minimum lining thickness (B) of the brake linings (1) is indicated by a stepped edge.
			*BE42.10-N-1001-13D
7	Check wear limit and inner surface quality of brake drums (6)	 Skim brake drums (3) to repair size or replace if necessary.	*BE42.10-N-1001-12D
8	Check bell hub (3) for leaks	 Replace O-ring (2) and sealing rings (4, 5) on bell hub (3) if necessary.	AR35.20-T-0250A
9	Check axial play of rear axle shaft	 Adjust axial play of rear axle shaft if necessary.	AR35.20-T-0250-01A
			*BE35.30-N-1003-01G
			*001589532100
			*317589003100
			*363589022100
			*363589026300
			*366589002105
	Install
10	Adjust wheel bearing play		AR35.20-T-0301-01A
			*BE35.20-N-1001-02E
			*BA35.20-N-1007-06H
11	Push on brake drum (6)	 Observe markings and clearance. On versions with the ABS option, check that the sensor is correctly seated by pressing in the sensor as far as the stop. The distance between sensor and the rotor is set automatically by the wheel bearing play.
12	Adjust clearance of brake		AR42.10-T-0181A
13	Install wheels	 When fitting the wheels, ensure that the inner valve is accessible and tighten the wheel nuts gently without tightening torque.	AR40.10-T-1100A
14.1	Lower vehicle at rear axle
14.2	Lower vehicle at center axle	Model 671.312/ 322/ 327 only
15	Tighten wheel nuts on rear axle		*BA40.10-N-1001-03B
			*BA40.10-N-1001-02B
	The wheel nuts must be retightened after the first 50-100 km of driving.
16	Retighten wheel nuts on rear axle		*BA40.10-N-1001-03B
			*BA40.10-N-1001-02B

Test values for wheel hub

Number	Designation		Rear axles 748.513/ 524


BE35.20-N-1001-02E	Wheel bearing play	mm	0.01 to 0.03

Test and adjustment values for rear axle drive

Number	Designation		Rear axle 748.513/ 524 with crown wheel dia. 233 mm


BE35.30-N-1003-01G	Axial play at input shaft	mm	0.2...0.3

Test and adjustment values for brake shoes

Number	Designation			Model 671 with rear axle 748.513/524


BE42.10-N-1001-13D	Brake lining thickness	Regular (A)	mm	18.7...19.0
		Repair stage I	mm	19.5...19.8
		Repair size II	mm	20.2...20.5
		Minimum lining thickness (B)	mm	5
		See picture		AR42.10-T-1010A

Test and adjustment values for drum brake

Number	Designation			Model 671 with rear axle 748.513/524


BE42.10-N-1001-12D	Brake drum dia.	Normal	mm	410.0...410.2
		Repair stage I	mm	411.5...411.7
		Repair size II	mm	413...413.2
		Wear limit	mm	414,5