Remove/Install Automatic Transmission Oil Pan - AR27.10-P-7031EWM

Transmission 725.0 in model 166, 292 

Fig 1: Automatic Transmission Oil Pan Components Location - Transmission 725.0 In Model 166

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

Shown on crossmember made of aluminum on model 166

Courtesy of MERCEDES-BENZ USA

	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
	Risk of injury  . Moving parts can pinch, crush or, in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating area of mechanical components when moving components.	AS00.00-Z-0009-01A
	Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	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 Bolted connections with self tapping screws		AH00.00-P-0007-01SF
	Notes on self-locking nuts and Bolts		AH00.00-N-0001-01A
Notice	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
	Notes on automatic transmission		AH27.19-P-0001-01NKB
	Remove
1	Remove center and rear underfloor paneling.		AR61.30-P-1001GQ
2	Thoroughly clean oil pan (34) and surrounding area.	Assembly cleaner	*BR00.45-Z-1028-04A
3	Remove screw plug (30).	Position oil receptacle under oil pan (34). Commercially available devices/tools Oil receptacle Open screw plug (30) using socket wrench.
		Socket wrench	Fig 2
4	Drain fluid from transmission.	Set overflow pipe (31) to "drain large oil filling capacities" position (Pos. 4) using socket wrench. Socket wrench	Fig 3
5	Remove heat shield from oil pan (34).		AR27.40-P-0700-01GZ
6	Remove holders that are installed on the oil pan (34) from the oil pain (34).	If holders are present. The number of holders may vary depending on the equipment variant.
7	Remove nuts (37) of engine mount (36) from crossmember (38) and lift Transmission (35).
	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 screws (1 to 10).	Commercially available devices/tools Flexible head wrench insert E10 1/4", comparable with Snap-on company Article no.:TSE100 www.snapon.com
9	Lower Transmission (35) until engine mount (36) makes contact with crossmember (38).
	000 588 10 62 00 Support plate		WS26.00-P-3309B
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
10	Remove oil pan (34) from Transmission (35).
11	Take overflow pipe (31) and swirl pipe for ultrasound measurement (29) out of oil pan (34).
12	Remove seal (33).	Only when reusing the oil pan (34).
	Clean
13	Clean sealing surfaces of oil pan (34) and magnets.	Only when reusing the oil pan (34). Sealing surfaces must be absolutely free of oil and grease. Otherwise leaks may occur. Let assembly cleaner flash off completely.
		Assembly cleaner	*BR00.45-Z-1028-04A
14	Clean sealing surface at Transmission (35).	Sealing surfaces must be absolutely free of oil and grease. Otherwise leaks may occur. Let assembly cleaner flash off completely. Assembly cleaner	*BR00.45-Z-1028-04A
	Install
15	Attach seal (33).	Do not apply any sealant or sealing compound to oil pan (34) and Transmission (35). Otherwise leaks may occur. Replace seal (33).
16.1	Replace overflow pipe (31) and swirl pipe for ultrasound measurement (29) of oil pan (34).	When installing new oil pan (34). Press overflow pipe (31) and swirl pipe for ultrasound measurement (29) firmly onto base of oil pan (34).
16.2	Check overflow pipe (31) and swirl pipe for ultrasound measurement (29) for firm seating on base and for signs of damage.	If oil pan (34) is to be reused. If problems occur, ↓ replace overflow pipe (31) and swirl pipe for ultrasound measurement (29). Press overflow pipe (31) and swirl pipe for ultrasound measurement (29) firmly onto base of oil pan (34).
17	Attach oil pan (34) to Transmission (35) and partially screw-in screws (1-8). Notes on oil pan versions		AH27.10-P-0002-01EWN
		An old variant of the oil pan (34) must not be installed. Otherwise, the ultrasound measurement method cannot be used. Replace screws (1-8). Replace oil pan (34) when replacing oil filter (32). Oil filters (32) cannot be obtained individually.
18	Lift up Transmission (35).
	000 588 10 62 00 Support plate		WS26.00-P-3309B
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
19	Partially screw-in screws (9, 10).	Replace Bolts (9, 10).
20	Tighten screws (1 to 10).	Tighten screws (1 to 10) of oil pan (34) in numerical sequence. Commercially available devices/tools Flexible head wrench insert E10 1/4", comparable with Snap-on company Article no.:TSE100 www.snapon.com
		Screw/ Bolt, oil pan to Transmission housing	*BA27.10-P-1010-04H
21	Lower Transmission (35).
	000 588 10 62 00 Support plate		WS26.00-P-3309B
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
22	Attach nuts (37) of engine mount (36) to crossmember (38).
	000 588 10 62 00 Support plate		WS26.00-P-3309B
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
		Bolt/nut, rear engine mount to rear engine crossmember	*BA22.10-P-1004-03G
23	Attach holders to oil pan (34).	If holders were present. The number of holders may vary depending on the equipment variant.
		M6x1	*BA00.10-P-1002-04A
24	Attach heat shield to oil pan (34).		AR27.40-P-0700-01GZ
		Screw/ Bolt, heat shield to oil pan	*BA27.10-P-1009-04H
25	Fill Transmission (35) with oil.		AR27.00-P-0270EWN
		Always follow the work procedure and observe the Specifications for Operating Fluids. Otherwise the Transmission (35) will be damaged.
26	Install center and rear underfloor paneling.		AR61.30-P-1001GQ

Fig 2: Identifying Socket Wrench (724 589 01 09 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Socket Wrench (725 589 00 09 00)

Courtesy of MERCEDES-BENZ USA