Remove/install cylinder head - AR01.30-P-5800MCU

ENGINE 132.910 in MODEL 451.3/4 

Shown on removed engine 

Fig 1: Identifying Cylinder Head Remove/Install Components (1 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Cylinder Head Remove/Install Components (2 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Cylinder Head Remove/Install Components (3 Of 3)

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Check basic position of camshafts		AR05.20-P-6010MCU
2	Remove timing case cover		AR01.40-P-8000MCU
3	Support rear axle crossmember (2) in the middle with a telescopic lifter, remove screw/bolts (3) and lower rear axle crossmember (2)	Use a suitable base. Screw/bolt, crossmember to integral carrier	*BA35.10-P-1003-01F
4	Disconnect electrical connection (4) on coolant temperature sensor (B114) and unclip retaining clip (5) from electrical wiring harness on holder (6)
5	Turn back ratchet (7) on chain tensioner (8) using a suitable screwdriver and lock chain tensioner (8) via the bore (arrow A)	Attach/remove retaining lock for engine	AR03.30-P-1600-06MCE
		In order to lock the chain tensioner (8), place a pin with a diameter of 1.5 mm into the bore (arrow A) in the chain tensioner (8). : Attach adapter to crankshaft, remove retaining lock on starter ring gear and turn engine in direction of engine rotation through about two revolutions until the markings on the crankshaft sprocket and on the cylinder crankcase stand opposite each other. Then check whether the marking (arrow B) on the camshaft sprocket (14) and the marking (arrow C) on the camshaft positioner (15) stand opposite each other; remove timing chain (13) if necessary and mount again anew.
		Retaining lock	Fig 4
		Adapter	Fig 5
		If the cylinder head (1) was replaced the valve clearance must be checked and adjusted if necessary. ↓ Set valve clearance	AP05.30-P-0560MCC
6	Remove screw/bolts (9) and remove slide rail (10)	Bolt, timing chain slide rail to cylinder head	*BA05.10-P-1002-01P
		Bolt, timing chain slide rail to crankcase	*BA05.10-P-1003-01P
7	Remove screw/bolt (11) and remove tensioning rail (12)	Bolt, timing chain tensioning rail to cylinder head	*BA05.10-P-1001-01P
8	Take off timing chain (13)	: Before mounting the timing chain (13), check whether the marking (arrow B) on the camshaft sprocket (14) and the marking (arrow C) on the camshaft positioner (15) are standing opposite each other. If this is not the case, the intake camshaft and the exhaust camshaft must be turned appropriately.
9	Lower vehicle with vehicle lift
10	Remove screw/bolt (16) and pull adjustable camshaft timing solenoid (Y49) out of cylinder head (1)	Cover oil holes on adjustable camshaft timing solenoid (Y49) to protect against ingress of foreign objects. Ingress of foreign objects can cause engine damage. Bolt, camshaft solenoid to cylinder head	*BA05.20-P-1006-01M
11	Remove intake camshaft and exhaust camshaft	The camshaft sprocket (14) remains on the exhaust camshaft.	AR05.20-P-6992MCU
12	Loosen clamp (17) and detach coolant hose (18) from connection fitting on cylinder head (1)	: Replace hose clamp (17).
13	Remove screw/bolt (19) and pull camshaft Hall sensor (B6/1) out of cylinder head (1)	Screw/bolt, camshaft position sensor to cylinder head	*BA15.12-P-1004-01G
14	Remove screw/bolt (20) for coolant pipe (21) on cylinder head (1)	Bolt, coolant line to cylinder head	*BA20.10-P-1011-01J
15	Detach holder (22) for electrical wiring harness (23) on intake manifold (24)
16	Remove screw/bolts (25) and detach air intake manifold (24) from cylinder head (1)	: Replace seals on intake manifold (24). Screw/bolt, intake manifold to cylinder head	*BA09.20-P-1001-01J
17	Loosen cylinder head bolts (26) in stages	Tightening procedure for cylinder head bolts	AR01.30-P-5800-01MCC
		Removal: Loosen cylinder head bolts (26) in reverse order of tightening procedure. : Replace cylinder head bolts (26) and wet on thread and on bolt head contact surfaces with engine oil. Screw/bolt, cylinder head to crankcase	*BA01.30-P-1001-01K
18	Support engine on carrier for front engine suspension using a hand-operated hydraulic floor jack	Use a suitable base.
19	Unhook chain for engine hoist on retaining plate (30)	Retaining plates	Fig 6
20	Remove cylinder head bolts (26) and cylinder head (1) from cylinder crankcase
21	Remove cylinder head gasket (27) from crankcase	: Replace cylinder head gasket (27).
22	Remove valve tappet (28) from basic bores in cylinder head (1)	Do not use magnets. Gathering of the smallest metal shavings can occur due to magnetization of the valve tappets (28) which can lead to damage of valve tappets (28) and intake camshaft or exhaust camshaft. : The valve tappets (28) must be installed again at the same location.
23	Clean contact surfaces on cylinder head (1) and crankcase then check for visible damage and flatness	In the event of complaints: ↓ Replace cylinder head (1).
24	Clean threaded holes of cylinder head bolts (26) in crankcase
25	Remove screw/bolt (29) and remove retaining plate (30) from cylinder head (1)	When replacing the cylinder head (1). Retaining plates	Fig 6
26	Remove coolant temperature sensor (B11/4) from cylinder head (1)	When replacing the cylinder head (1). Coolant temperature sensor on cylinder head	*BA15.60-P-1002-01B
27	Install in the reverse order
	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
28	Perform an engine test run and check engine for leaktightness in area around the cylinder head (1) Cylinder head

Fig 4: Identifying Retaining Lock (451 589 01 40 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Adapter (451 589 01 63 00)

Courtesy of MERCEDES-BENZ USA

Fig 6: Identifying Retaining Plates (451 589 02 63 00)

Courtesy of MERCEDES-BENZ USA