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

Transmission 725.0, 725.1 (except 725.163) in model 223 

Courtesy of MERCEDES-BENZ USA

Shown on transmission 725.121 except code ME10 (Hybrid vehicle (Plug-in, PHEV)) 

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

Shown on transmission 725.121 with code ME10 (Hybrid vehicle (Plug-in, PHEV)) 

	Risk of death  when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)	Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. Transmission 725.121/181 in model 223 with code ME10 (Hybrid vehicle (plug-in, PHEV))	AS00.00-Z-0035-01A
	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
Notice	General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment	Transmission 725.121/181 in model 223 with code ME10 (Hybrid vehicle (plug-in, PHEV))	AH00.00-Z-0300-01A
Notice	Notes on self-locking nuts and bolts		AH00.00-P-0001-01KOA
Notice	Notes on bolted connections with self tapping screws		AH00.00-P-0007-01SF
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/install
1.1	Remove center and rear lower engine compartment lining.	Transmission 725.0 in model 223.1, 223.9 (except 223.979) Transmission 725.1 (except 725.163) in model 223 Only install center and rear lower rear engine compartment paneling again after leak test	AR61.20-P-1105S
1.2	Remove rear bottom engine compartment lining.	Transmission 725.0 in model 223.979 Only install rear lower engine compartment paneling after leak test.	AR61.20-P-1105S
2	Remove holder (13).
3	Remove holder (11) from oil pan and place to one side with attached electrical wiring harnesses.	Transmission 725.0, 725.1 (except 725.121/163/181) in model 223 Do not crush or kink or subject electric lines to tension. This will lead to damage to the electric lines and impair their function. Screw, electrical wiring harness holder to oil pan	*BA27.10-P-1035-04H
4	Thoroughly clean oil pan (34) and surrounding area.	Assembly cleaner	*BR00.45-Z-1028-04A
5	Remove screw plug (30).	Position oil receptacle under oil pan (34). Commercially available devices/tools  Oil receptacle Open screw plug (30) using socket wrench. Replace screw plug (30). Socket wrench	Fig 1
6.1	Set overflow pipe (31) to "draining large oil filling capacities" position (Pos. 4) using socket wrench, and drain transmission oil.	Transmission 725.0, 725.1 (except 725.121/163/181) in model 223 Socket wrench	Fig 2
6.2	Turn overflow pipe (31) clockwise up to end stop using hexagon key size 10, lift from base, and drain transmission oil.	Transmission 725.0/121/181 in model 223 Commercially available devices/tools  , hexagon key size 10
7	Remove heat shield (12) from oil pan (34) and place to one side with electrical wiring harnesses attached.	Do not crush or kink or subject electric lines to tension. This will lead to damage to the electric lines and impair their function.	AR27.40-P-0700-01S
		Bolt, heat shield to oil pan	*BA27.10-P-1009-04H
		Bolt, leaf spring for heat shield to transmission	*BA27.10-P-1008-04H
8	Unscrew screws (1 to 10).	Replace bolts (1 to 10). Screw in bolts (1 to 10) of oil pan (34) in numerical sequence. Screw, oil pan to transmission housing	*BA27.10-P-1010-04H
9	Remove oil pan (34) from transmission (35).	Replace oil pan (34) when replacing oil filter (32). Oil filters (32) cannot be obtained individually.
10	Take overflow pipe (31) and guide tube for ultrasound measurement (29) out of oil pan (34).	Only when replacing oil pan (34). When replacing oil pan (34), replace overflow pipe (31) and guide tube for ultrasound measurement (29). Press overflow pipe (31) and guide tube for ultrasound measurement (29) firmly onto base of oil pan (34).
11	Remove seal (33).	Only when reusing the oil pan (34). Do not apply any sealant or sealing compound to oil pan (34) and transmission (35) Otherwise leaks may occur. Replace seal (33).
12	Check overflow pipe (31) and guide tube for ultrasound measurement (29) for tight seating on base and for damage.	If there is a problem, ↓ replace corresponding component part.
	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).	Allow assembly cleaner to flash off completely. Assembly cleaner	*BR00.45-Z-1028-04A
15	Install in the reverse order.
16	Fill transmission (35) with oil.	Transmission 725.121/181 in model 223 with code ME10 (Hybrid vehicle (plug-in, PHEV))	AR27.00-P-0270EWH
		Transmission 725.015/045/095 in model 223 Transmission 725.112/172 in model 223 Always follow the work procedure and observe the Operating Fluid Specifications. Otherwise the transmission (35) will be damaged.	AR27.00-P-0270EWN
	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
17	Perform engine test run and check transmission for leak tightness and proper operation.
18.1	Install center and rear lower engine compartment lining.	Transmission 725.0 in model 223.1, 223.9 (except 223.979) Transmission 725.1 (except 725.163) in model 223	AR61.20-P-1105S
18.2	Install rear lower engine compartment paneling.	Transmission 725.0 in model 223.979	AR61.20-P-1105S

Fig 1: Identifying Socket Wrench (724 589 01 09 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Socket Wrench (725 589 00 09 00)

Courtesy of MERCEDES-BENZ USA