Remove/Install Front Axle Gear - AR33.30-P-0525XGA

Model 463 with engine 176, 177

as of model year 2019

Courtesy of MERCEDES-BENZ USA

	Risk of injury to skin and eyes due to handling of transmission oil. Health risk caused by swallowing transmission oil	Wear protective gloves, protective clothing and safety glasses. Do not pour transmission oil into beverage bottles.	AS00.40-Z-0001-01A
	Risk of injury caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Notes on repair work on suspension components		AH00.00-P-0100-01A
	Remove/install
1	Put transmission into neutral position.
2	Release parking brake.
3	Remove lower center engine compartment lining.	Do not install lower center engine compartment lining until after leak test.	AR61.20-P-1105XG
4	Drain oil from front axle differential (1).		AR33.25-P-0300-01XGA
		Oil filler screw/drain screw to front axle transmission	*BA33.30-P-1006-03C
		Quick-acting adhesive Omnifit 100H (50 g)	*BR00.45-Z-1110-02A
		Loctite 7063 (400 ml) cleaning spray	*BR00.45-Z-1046-04A
		Model 463.260/261 with engine 176 as of model year 2019	*BF33.30-P-1001-01A
		Model 463.276/277 with engine 177 as of model year 2019Hypoid gear oil Hand pump	Fig 1
5	Detach propeller shaft (3) from flange (3f) of front axle transmission (1).		AR41.10-P-0070XGA
6	Remove front axle shafts (2).		AR33.30-P-0620XGA
7	Support front axle differential (1) and secure to prevent it from falling.
	000 588 10 62 00 Support plate		WS26.00-P-3309B
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
8	Unscrew threaded connections (4).	Bolt, front axle differential/axle tube (bearing element) to frame	*BA33.30-P-1002-03C
9	Lower front axle differential (1) until bleed line banjo bolt (5) is accessible.
10	Unscrew bleed line banjo bolt (5).	Replace seals. Banjo bolt, vent line to front axle gear	*BA33.30-P-1007-03C
11	Unscrew screws (6) and remove retaining clamps.	M6	*BA00.10-P-1002-01A
12	Release and disconnect electrical connector from front axle differential lock actuator (M46/7).
13	Remove front axle differential (1) downwards.
14	Remove front axle differential lock actuator (M46/7).	When replacing the front axle transmission (1).	AR33.40-P-0001XGA
15	Install in the reverse order.
16	Check front axle differential (1) for leak tightness.	If a leakage is present, ↓ Seal front axle differential (1).	AR33.30-P-0542XGA
17	Install bottom center engine compartment lining.		AR61.20-P-1105XG

HEADLESS SCREWS: BOLTS AND NUTS, COARSE-PITCH THREAD

Number	Designation				Model all (4xWD, CAR, smart)
BA00.10-P-1002-01A	M6	8.8	Galvanized	Nm	9
		8.8	Phosphated	Nm	9
		10.9	Galvanized	Nm	13
		10.9	Phosphated	Nm	12
		12.9	Galvanized	Nm	16
		12.9	Phosphated	Nm	14

FRONT AXLE GEAR

Number	Designation				Model 463 as of model year 2019
BA33.30-P-1002-03C	Bolt, front axle differential/axle tube (bearing element) to frame	M10		Nm	60
		M12	Stage 1	Nm	50
		M12	Stage 2	∠°	90

FRONT AXLE GEAR

Number	Designation			Model 463 as of model year 2019
BA33.30-P-1006-03C	Oil filler screw/drain screw to front axle transmission	M24	Nm	90

FRONT AXLE GEAR

Number	Designation		Model 463 as of model year 2019
BA33.30-P-1007-03C	Banjo bolt, vent line to front axle gear	Nm	8

DIFFERENTIAL

Number	Designation			Model 463.260/261/276/277/349 as of model year 2019
BF33.30-P-1001-01A	Hypoid gear oil	Filling capacity	Liter	1, 1
BF33.30-P-1001-01A	Hypoid gear oil	Specification		BB00.40-P-0235A

Fig 1: Identifying Hand Pump (210 589 00 71 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1046-04A	Loctite 7063 (400 ml) cleaning spray	A 001 986 71 71 09
BR00.45-Z-1110-02A	Quick-acting adhesive Omnifit 100H (50 g)	A 002 989 23 71