Remove/install valve springs and/or valve stem seals - AR05.30-P-3500BA

ENGINE 112 in MODEL 170, 202, 203, 208, 209, 210, 220

ENGINE 113 in MODEL 203, 209, 211.076 /276, 215, 220, 230.474 /475

ENGINE 112.913 in MODEL 211.061 /261

ENGINE 112.949 in MODEL 211.065 /265

ENGINE 113.967 in MODEL 211.070 /270

Fig 1: Identifying Valve Springs And Valve Stem Seals Components (Engine 112 In Model 200)

Fig 2: Identifying Valve Springs And Valve Stem Seals Components (Shown On Engine 112)

Fig 3: Identifying Valve Springs And Valve Stem Seals Components (Shown On Engine 112)

	Remove/install
1	Remove engine cover or air filter	Unclip covering on front side of engine. Remove engine trim panel or air filter by lifting vertically up and off the cylinder head covers.
		Model 203.065 /265, 170.466, 211.076 /276, 215.374, 220.074 /174, 230.474	AR09.10-P-1150SVK
2.1	Remove fan shroud (2).	Model 230., 220, 215	AR20.40-P-6800AB
		Model 211.061 /261 /065 /265 /070 /270	AR20.40-P-6800TB
		Model 211.076 / 276 Model 202, 208, 210 with engine 112	AR20.40-P-6800TC
2.2	Remove electric fan	Model 170.465 /466	AR20.40-P-5000SV
		Only model 203 except 203.076/276, 209	AR20.40-P-5000PV
		Model 203.076/276	AR20.40-P-5000AC
3	Remove Poly-V belt for supercharger	On model 211.076 /276, 215.374, 220.074 /174, 230.474	AR13.21-P-1202RVK
4	Remove poly-V belt (3)	Installation: Lock tensioning device with a drift or pin (diameter 5 mm).
		Model 202, 208.365 /465, 210 Model 215.373 /375 Model 220 except 220.074 /174	AR13.22-P-1202BA
		Model 215.374 Model 220.074/ 174 Model 230.474 /475	AR13.22-P-1202R
		Model 211.076 /276	AR13.22-P-1202RV
		Model 170.465	AR13.22-P-1202SV
		Model 203 except 203.065 /265 Model 209 Model 211.061 /065 /070	AR13.22-P-1202PV
		Model 203.065 /265, 170.466	AR13.22-P-1202SVK
5	Remove cylinder head covers (6)	Air filter mounted on vehicle	AR01.20-P-5014B
		Air filter mounted on engine	AR01.20-P-5014BV
6	Remove spark plugs	One spark plug only at each cylinder.
			*BA15.10-P-1001-01A
			Fig 13
7	Remove compressor	Model 230.474, 203.065 /265, 170.466, 211.076 /276, 215.374, 220.074 /174	AR09.50-P-4705SVK
8	Position crankshaft at a 40° crank angle after ignition TDC of cylinder 1	The engine must not be turned back, otherwise the timing chain could skip. Rotate engine at crankshaft in the direction of rotation up to the 40° marking on the belt pulley/the vibration damper is aligned with the marking on the timing case cover. Grooves on the camshafts must be pointing toward the inner V. If no valve timing index marks on the camshaft are present, use the locating plate to set the valve timing.	AR05.10-P-6858V
			Figure
9	Remove chain tensioner (5)	Model 170, 202, 203, 208, 209, 210 with engine 112 Model 209.375 /475 Model 209.376 /476 up to 23.4.04	AR05.10-P-7800CA
		Model 203.076/ 276 Model 209.376/ 476 as of 24.4.04	AR05.10-P-7800AC
		Model 211, 215, 220, 230	AR05.10-P-7800AM
10	Remove camshaft Hall sensor (B6/1)	All except model 203.076 /276, 209.475, 211.076 /276, 215.374, 220.074 /174	AR15.10-P-2000A
		Model 203.076/ 276	AR15.10-P-2000AC
		Model 211.076 /276, 215.374, 220.074 /174 Model 209.475	AR15.10-P-2000RVK
11	Remove camshaft sprockets (10)	Lock right and left camshaft with locating plates.
			*BA05.20-P-1001-01B
			Figure
			Figure
			Figure
		Installation: ↓	Figure
		Inspect engine timing. after checking: ↓	AR05.10-P-6858V
		Set basic position of camshafts.	AR05.20-P-6020AU
12	Remove camshaft bearing bridges (9)	Engine 112, 113 without cylinder shutoff	AR05.20-P-7103AU
		Engine 113.960 with code 479 Cylinder shutoff	AR05.20-P-7103AV
13	Rotate piston for cylinder to be worked on to TDC	Crank engine at crankshaft and hold up the timing chain so that it does not jam. Installation: Before installing camshaft sprockets, again turn back the crankshaft in the starting position to a 40° crank angle after ignition TDC at the first cylinder.
14	Secure vehicle to prevent it from moving.	Engage reverse gear or park pawl with automatic transmission. If necessary, install the retaining lock (13) for the crankshaft, see: ↓
		Remove/install retaining lock for crankshaft/ ring gear	AR03.30-P-5000B
15	Connect cylinder leakage tester (12)	Turn connection hose (23) of cylinder leakage testing unit (12) into the relevant spark plug bore. Cylinder leakage tester, see GOTIS http://gotis.aftersales.daimlerchrysler.com
16	Pressurize compression chamber	Set a pressure of approx. 5 bar.
17	Screw in retaining fork and detent with hinged bearing into the cylinder head		Figure
18	Attach detent depresser with lever handle and thrust piece into detent with hinged bearing, align	Position thrust piece vertically at the upper valve spring retainer (16) and align parallel to the grid with the joint bearing.
			Figure
19	Remove upper valve spring retainer (16) and valve spring (17)	Do not allow valves to come into contact with piston crowns, otherwise they will be bent. Compress valve spring (17) and remove split valve spring retainer locks (15) with tweezers (20) or magnetic finger. The valve springs of the intake and exhaust valves are identical.
			Figure
20	Replace valve stem seal (18)		AR05.30-P-3500-02A
			Figure
			Figure
21	Remove lower valve spring retainer (19)
	Checking
22	Inspect surface of valve stems for roughness and ridging	Visual inspection or with nail probe. Replace valves with a rough stem surface or formation of ridging: ↓
		Remove valves.	AR05.30-P-3511AV
23	Check upper valve spring retainer (16) and lower valve spring retainer 19)	Inspect the valve spring retainer for burrs, replace if necessary.
24	Install in the reverse order