Remove/Install Crankshaft - AR03.20-P-4351MNA

Engine 176 in model 463 

up to model year 2019 

Engine 177 in model 205 

Engine 178 in model 190 

Courtesy of MERCEDES-BENZ USA

Fig 1: Crankshaft Component Location - Model 205 W/ Engine 177

Courtesy of MERCEDES-BENZ USA

	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  to skin and eyes due to handling of engine oil. Risk of poisoning  caused by swallowing engine oil	Wear protective gloves, protective clothing and safety glasses. Do not fill engine oil into beverage containers.	AS18.00-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	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
Notice	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Remove
1.1	Remove engine with transmission.	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205 Engine 176 in model 463 up to model year 2019	AR01.10-P-2401MNF
		Engine 177 in model 205	AR01.10-P-2401MNA
1.2	Remove engine with front axle carrier.	Engine 178 in model 190	AR01.10-P-2500MNB
2	Release engine transmission unit from lifting platform.	Engine 178 in model 190
	000 588 03 62 00 Lifting platform		WS01.00-P-0091A
3.1	Remove the transmission with start-off clutch from the engine.	Engine 177 in model 205 with transmission 722.93	AR27.10-P-0505MNA
3.2	Remove the drive shaft with drive shaft housing from the engine.	Engine 178 in model 190 with transmission 700.4	AR41.50-P-0011MNB
3.3	Remove the transmission with torque converter from the engine.	Engine 176 in model 463 with transmission 722.9 up to model year 2019	AR27.10-P-0500GW
4	Attach the engine crane with the load tilter and lifting lugs to the engine and tension the load tilter chains uniformly.	Engine 178 in model 190
	000 588 00 62 00 Load tilter	Commercially available devices/tools  Engine crane	WS01.00-P-0102B
		Lifting eye	Fig 4
5	Remove screws of front engine mounts.	Engine 178 in model 190	AR22.10-P-4330MNB
6	Secure the engine with engine crane and load tilter to the assembly stand.
	000 588 00 31 00 Assembly stand for cars		WS01.00-Z-3028KOB
	000 588 00 62 00 Load tilter	Commercially available devices/tools  Engine crane	WS01.00-P-0102B
7	Remove the engine crane with load tilter and front engine lifting lug from the engine.
	000 588 00 62 00 Load tilter	Commercially available devices/tools  Engine crane	WS01.00-P-0102B
		Lifting eye	Fig 4
8	Remove timing chain on primary chain drive.	Engine 178 in model 190	AR05.10-P-7613MNB
		Engine 176 in model 463 up to model year 2019 Engine 177 in model 205	AR05.10-P-7613MNA
9	Remove camshafts of left and right cylinder bank.	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205 Engine 178 in model 190 (except 190.381)	AR05.20-P-6992MNA
		Camshafts of left cylinder bank Engine 178.9 in model 190.381	AR05.20-P-6993MNJ
		Camshafts of right cylinder bank Engine 178.9 in model 190.381	AR05.20-P-6994MNJ
10	Remove roller-type rocker arms and compensating elements.		AR05.00-P-2011MNA
11	Remove left front engine carrier.	Engine 176 in model 463 up to model year 2019	AR22.10-P-4320MNF
		Engine 178 in model 190 (except 190.381)	AR22.10-P-4320MNB
		Engine 178.9 in model 190.381	AR22.10-P-4325MNJ
		Engine 177 in model 205	AR22.10-P-4325MNA
12	Insert the center bolt for the vibration damper into the crankshaft (1).
13	Mark installation position on connecting rod bearing caps and connecting rods.	Do not interchange the connecting rod bearing caps. Engine damage can occur otherwise.
14	Remove connecting rod bolts (3) and remove connecting rod bearing caps.	The connecting rods and the connecting rod bearing caps are cracked (broken). Do not mix up connecting rods. Engine damage can occur otherwise. While turning crankshaft (1), make sure that connecting rods do not cant.
15	Mark connecting rod bearing shells relative to associated connecting rod and connecting rod bearing cap.	Only where connecting rod bearing shells are reused. Do not mix up the connecting rod bearing shells. Engine damage can occur otherwise.
16	Remove connecting rod bearing shells.
17	Determine crankshaft main bearing end play.		AR03.20-P-4291-03MNA
		Main bearing play	*BE03.20-P-1001-04E
		Mount dial indicator	Fig 2
		Dial indicator holder If the maximum value of the crankshaft main bearing end play is exceeded: ↓ Replace upper thrust plates (6), lower thrust plates (7) and perform check again. If the maximum value of the crankshaft main bearing end play is exceeded again, ↓ Replace crankshaft (1), lower crankshaft bearing shells, upper crankshaft bearing shells, connecting rod bearing shells and crankcase.	Fig 5
18	Mark crankshaft bearing caps and crankshaft main bearing cap (4) relative to crankcase.	Install crankshaft bearing caps and crankshaft main bearing cap (4) at same location and in same direction. Engine damage can occur otherwise.
19	Release screws (2, 5) in reverse order to tightening procedure.	Tightening procedure	AR03.20-P-4351-02MNA
20	Remove crankshaft bearing caps and crankshaft main bearing cap (4).
21	Mark the lower crankshaft bearing shells relative to the crankshaft bearing cap and crankshaft main bearing cap (4).	Only where crankshaft bearing shells are reused.
22	Mark lower thrust plates (7) relative to crankshaft main bearing cap (4).	Only where lower thrust plates (7) will be reused.
23	Remove the lower crankshaft bearing shells from the crankshaft bearing cap and crankshaft main bearing cap (4).
24	Remove lower thrust plates (7) from crankshaft main bearing cap (4).
25	Remove crankshaft (1) from the crankcase.
	When reusing the upper crankshaft bearing shells/thrust plates (6)
26	Mark upper crankshaft bearing shells relative to crankcase.
27	Mark the upper thrust plates (6) relative to the crankcase.
28	Remove upper crankshaft bearing shells and upper thrust plates (6) from crankcase.
29	Clean all parts of crank assembly.	The parts of the crank assembly must be absolutely free of soiling. Engine damage can occur otherwise. Assembly cleaner	*BR00.45-Z-1028-04A
	Check
	Information on assessing wear of main bearings and main bearing journals		AH03.20-P-1000-02MM
	Notes on assessing wear on connecting rod bearings and connecting rod journals		AH03.10-P-0001-03MM
30	Check crankshaft (1) in removed state.	Only where crankshaft (1) is reused.	AR03.20-P-4463-01MNM
		Commercially available devices/tools  Quick calipers for internal measurements Outside micrometer Crankshaft journal Ø	*BE03.20-P-1001-02J
		Crankshaft bearing	*BE01.40-P-1001-04C
		Bolt, crankshaft bearing cap to crankcase	*BA03.20-P-1002-01N
		Basic bore width at fit bearing	*BE01.40-P-1002-04C
		Connecting rod bearing journal Ø	*BE03.20-P-1003-02J
		Dial gauge	Fig 3
31	Check crankshaft bearing shells, lower thrust plates (7), upper thrust plates (6) and crankshaft bearing journals for wear and damage.	If problems occur: ↓ Replace crankshaft bearing shells, lower thrust plates (7), upper thrust plates (6) and/or crankshaft (1).
32	Check connecting rod bearing shells and connecting rod journals for wear and damage.	If problems occur: ↓ Replace connecting rod bearing shells and/or crankshaft (1).
	Install
33	Assign new upper and new lower crankshaft bearing shells.	Only when replacing the upper and lower crankshaft bearing shells.	AR03.20-P-4360-01MM
34	Wet upper crankshaft bearing shells and upper thrust plates (6) with engine oil.
	Specified engine oils for Cars, Vans (service) -Overview		BB00.40-P-0223-02A
35.1	Insert new upper crankshaft bearing shells and new upper thrust plates (6) into crankcase.	Only when replacing the upper crankshaft bearing shells and upper thrust plates (6).
35.2	Insert previously marked upper crankshaft bearing shells and previously marked upper thrust plates (6) at respectively marked location in crankcase.	Only where upper crankshaft bearing shells and upper thrust plates (6) will be reused.
36	Wet crankshaft journals with engine oil.
	Specified engine oils for Cars, Vans (service) -Overview		BB00.40-P-0223-02A
37	Position crankshaft (1) in crankcase.
38	Wet lower crankshaft bearing shells with engine oil.
	Specified engine oils for Cars, Vans (service) -Overview		BB00.40-P-0223-02A
39.1	Insert the new lower crankshaft bearing shells into the crankshaft bearing cap and crankshaft main bearing cap (4).	Only where lower crankshaft bearing shells will be replaced.
39.2	Insert previously marked lower crankshaft bearing shells into respectively marked crankshaft bearing cap and marked crankshaft main bearing cap (4).	Only where crankshaft bearing shells are reused.
40	Wet the lower thrust plates (7) with engine oil.
	Specified engine oils for Cars, Vans (service) -Overview		BB00.40-P-0223-02A
41.1	Insert new lower thrust plates (7) into crankshaft main bearing cap (4).	Only where lower thrust plates (7) will be replaced.
41.2	Insert previously marked lower thrust plates (7) relative to respectively marked location in crankshaft main bearing cap (4).	Only where lower thrust plates (7) will be reused.
42	Install crankshaft bearing caps and crankshaft main bearing cap (4) relative to respectively marked location in crankcase.	Install crankshaft bearing caps and crankshaft main bearing cap (4) at same location and in same direction. Engine damage can occur otherwise.	AR03.20-P-4360-01MM
43	Wet contact surface of bolt heads of new bolts (2, 5) with engine oil.
	Specified engine oils for Cars, Vans (service) -Overview	Replace screws (2, 5).	BB00.40-P-0223-02A
44	Tighten new bolts (2, 5).	Tightening procedure Observe tightening procedure.	AR03.20-P-4351-02MNA
		Bolt, crankshaft bearing cap to crankcase	*BA03.20-P-1002-01N
		Side bolt to crankshaft bearing cap	*BA03.20-P-1001-01N
45	Turn crankshaft (1) at center bolt and check for unobstructed movement.	If the crankshaft (1) is sluggish or stuck: ↓ Check for correct usage and seat of upper crankshaft bearing shells and lower crankshaft bearing shells.	AR03.20-P-4360-01MM
46	Check connecting rod bolts (3) and replace if necessary.	AR03.10-P-6111-01MNA
		Connecting rod bolts	*BE03.10-P-1001-03A
47.1	Install connecting rod bearing shells.	When replacing connecting rod bearing shells.	AR03.10-P-6111-08MNA
	Specified engine oils for Cars, Vans (service) -Overview		BB00.40-P-0223-02A
47.2	Install connecting rod bearing shells relative to associated connecting rod and connecting rod bearing cap.	Only where connecting rod bearing shells are reused.
			AR03.10-P-6111-08MNA
	Specified engine oils for Cars, Vans (service) -Overview		BB00.40-P-0223-02A
48	Tighten connecting rod bolts (3).
	Specified engine oils for Cars, Vans (service) -Overview		BB00.40-P-0223-02A
			AR03.10-P-6111-02MNA
		Bolt, connecting rod bearing cap to connecting rod	*BA03.10-P-1001-01W
49	Turn crankshaft (1) at center bolt of vibration damper and check for unobstructed movement.	If the crankshaft (1) is sluggish or stuck: ↓ Check for correct use and seating of the connecting rod bearing shells.	AR03.10-P-6111-08MNA
		Specified engine oils for Cars, Vans (service) -Overview	BB00.40-P-0223-02A
50	Remove center bolt of vibration damper from crankshaft (1).
51	Install left front engine carrier.	Engine 176 in model 463 up to model year 2019	AR22.10-P-4320MNF
		Engine 178 in model 190 (except 190.381)	AR22.10-P-4320MNB
		Engine 178.9 in model 190.381	AR22.10-P-4325MNJ
		Engine 177 in model 205	AR22.10-P-4325MNA
52	Insert roller-type rocker arms and compensating elements.		AR05.00-P-2011MNA
53	Install camshafts of left and right cylinder bank.	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205 Engine 178 in model 190 (except 190.381)	AR05.20-P-6992MNA
		Camshafts of left cylinder bank Engine 178.9 in model 190.381	AR05.20-P-6993MNJ
		Camshafts of right cylinder bank Engine 178.9 in model 190.381	AR05.20-P-6994MNJ
54	Install timing chain for primary chain drive.	Engine 178 in model 190	AR05.10-P-7613MNB
		Engine 176 in model 463 up to model year 2019 Engine 177 in model 205	AR05.10-P-7613MNA
55	Attach the front engine lifting lug to the engine.	Lifting eye	Fig 4
56	Attach the engine crane with load tilter to all engine lifting lugs, tension the load tilter chains uniformly and remove the engine from the assembly stand.
	000 588 00 31 00 Assembly stand for cars		WS01.00-Z-3028KOB
	000 588 00 62 00 Load tilter	Commercially available devices/tools  Engine crane	WS01.00-P-0102B
		Lifting eye	Fig 4
57	Place the engine with engine crane and load tilter onto the front axle carrier.	Engine 178 in model 190
	000 588 00 62 00 Load tilter	Commercially available devices/tools  Engine crane	WS01.00-P-0102B
58	Tighten the screws on the front engine mount.	Engine 178 in model 190	AR22.10-P-4330MNB
59	Remove engine crane with load tilter and front engine lifting lug from engine.	Engine 178 in model 190
	000 588 00 62 00 Load tilter	Commercially available devices/tools  Engine crane	WS01.00-P-0102B
		Lifting eye	Fig 4
60.1	Install transmission with start-off clutch on engine.	Engine 177 in model 205 with transmission 722.93	AR27.10-P-0505MNA
60.2	Install the drive shaft with drive shaft housing in the engine.	Engine 178 in model 190 with transmission 700.4	AR41.50-P-0011MNB
60.3	Install the transmission with torque converter in the engine.	Engine 176 in model 463 with transmission 722.9 up to model year 2019	AR27.10-P-0500GW
61.1	Install engine with transmission.	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205 Engine 176 in model 463 up to model year 2019	AR01.10-P-2401MNF
		Engine 177 in model 205	AR01.10-P-2401MNA
61.2	Install engine with front axle carrier.	Engine 178 in model 190	AR01.10-P-2500MNB

Fig 2: Identifying Mount Dial Indicator (001 589 93 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Dial Gauge (001 589 53 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Lifting Eye (177 589 00 62 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Dial Indicator Holder (363 589 02 21 00)

Courtesy of MERCEDES-BENZ USA