Remove/install check valve for chain tensioner to cylinder head - AR01.30-P-5810MM

ENGINE 157, 278 in MODEL 216, 217, 221, 222 

ENGINE 276 in MODEL 221, 222 

Shown on cylinder head without stepped hole 

Fig 1: Identifying Check Valve For Chain Tensioner Remove/Install Components - Shown On Cylinder Head Without Stepped Hole

Courtesy of MERCEDES-BENZ USA

Shown on cylinder head with stepped hole 

Fig 2: Identifying Check Valve For Chain Tensioner Remove/Install Components - Shown On Cylinder Head With Stepped Hole

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Check Valve For Chain Tensioner Remove/Install Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Check Valve For Chain Tensioner Remove/Install Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove
1	Remove oil filter housing	ENGINE 157, 278 in MODEL 217, 222	AR18.20-P-3471LFB
		ENGINE 157, 278 in MODEL 216, 221	AR18.20-P-3471MMB
2	Remove chain tensioner	ENGINE 276.8 in MODEL 222	AR05.10-P-7800LFA
		ENGINE 276 in MODEL 221	AR05.10-P-7800MMA
		ENGINE 276.9 in MODEL 222	AR05.10-P-7800LFH
		ENGINE 157, 278 in MODEL 217, 222	AR05.10-P-7800LFB
		ENGINE 157, 278 in MODEL 216, 221	AR05.10-P-7800MMB
3	Cover timing chain chamber with rags	Cover timing chain chamber with rags in such a way that no parts can fall in.
4	Pull check valve (02a or 02b) out of the cylinder head using an extractor	Set the thread length of the extractor to a residual length of about 4 mm with shims and a nut M6 before disassembly of the check valve (02a or 02b). Damage will occur to the check valve (02a or 02b) otherwise and therefore breakage of the valve body, which leads to more difficult removal of the check valve (02a or 02b). The check valve (02a or 02b) will be destroyed during disassembly and cannot be used again. Engine damage will occur when reusing the check valve (02a or 02b) due to inner damage on the valve body.
		Puller	Figure
	Clean
5	Clean oil supply duct (01a or. 01b) in the cylinder head (01)
	Check
6	Check the oil supply duct (01a or. 01b) on the cylinder head (01) with the bur shaft (1) of a. 8.0 mm drill bit	Only check the oil supply duct (01a or. 01b) with the bur shaft (1). Damage will occur on the oil supply duct (01a or 01b) otherwise and therefore engine damage will occur. If the bur shaft (1) can be inserted into the oil supply duct (01a) then it is a cylinder head (01) with a stepped hole (see Fig 4). If the bur shaft (1) cannot be inserted into the oil supply duct (01a) then there is a cylinder head (01) without a stepped hole installed (see Fig 3).
	Install
7	Press the check valve (02a or 02b) by hand into the oil supply duct (01a or 01b)
	Cylinder head changed		BT01.30-P-0004-01MM
		The closed side of the check valve (02a or 02b) points with the ball to the rear and the open side with the thread points to the front in the direction of the chain tensioner.
8	Mount the press-in tool at the chain tensioner threaded holes (01c) on the cylinder head (01)	Do not exceed a tightening torque of 5 Nm. Damage will occur to the cylinder head (01) otherwise. The press-in tool consists of the press-in tool basic carrier (2a), the installer (2b) and the press-in screw (2c).
		Press-in tool	Fig 6
9	Press check valve (02a or 02b) into the cylinder head (01) using the press-in tool	Press check valve (02a or 02b) into the oil supply duct (01a or 01b) in the cylinder head (01) using the press-in screw (2c) of the press-in tool. For correct assembly the check valve (01a or 01b) must sit flush in the cylinder head (01) and must not project out.
10	Disassemble press-in tool
11	Remove rags from timing chain chamber	Remove rags in such a way that no parts or dirt particles which are on the rags can fall into the timing chain chamber.
12	Install chain tensioner	ENGINE 276.8 in MODEL 222	AR05.10-P-7800LFA
		ENGINE 276 in MODEL 221	AR05.10-P-7800MMA
		ENGINE 276.9 in MODEL 222	AR05.10-P-7800LFH
		ENGINE 157, 278 in MODEL 217, 222	AR05.10-P-7800LFB
		ENGINE 157, 278 in MODEL 216, 221	AR05.10-P-7800MMB
13	Install oil filter housing	ENGINE 157, 278 in MODEL 216, 221	AR18.20-P-3471MMB
		ENGINE 157, 278 in MODEL 217, 222	AR18.20-P-3471LFB

Fig 5: Identifying Puller (605 589 00 33 00)

Courtesy of MERCEDES-BENZ USA

Fig 6: Identifying Press-In Tool (276 589 00 33 00)

Courtesy of MERCEDES-BENZ USA