Removing/installing the rocker arm shaft - AR05.20-P-2350AU

ENGINE 112 

ENGINE 113 (except 113.960) 

ENGINE 113 

ENGINE 113.960 except CODE (479) Cylinder shutoff 

Shown on engine 112 1 Drift punch 

Fig 1: Identifying Rocker Arm Shaft Components - Shown On Engine 112

	Removing
1	Remove camshaft bearing bridge	Engines 112, 113 except engines 113.967/990 in models 219, engines 113.964 /971 /989 /993	AR05.20-P-7103AU
		Engine 113.993 in model 463	AR05.20-P-7103GX
		Engines 113.967/990 in model 219	AR05.20-P-7103TY
		Engine 113.964 in model 164	AR05.20-P-7103GZ
		Engine 113.971 in model 251	AR05.20-P-7103RT
		Engine 113.989 in model 171	AR05.20-P-7103VT
	Risk of injury  to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
2	Heat camshaft bearing bridge to approx. 150°C	Heat the camshaft bearing bridge uniformly, but do not heat it over 160°C; there is a danger of structural changes.
		i040	*WH58.30-Z-1001-28A
		i040	*WH58.30-Z-1003-28A
3	Place camshaft bearing bridge on board (4)		Figure
4	Remove the rocker arm spindle (3) by tapping gently with a hammer	If it is tapped very hard, there is a danger of distorting the camshaft bearing bridge and damaging the hollow rocker arm spindle (3).	Figure
	Check
5	Inspect bearing surfaces of rocker arms for damage	Pay attention to any long score marks caused by the removal of the rocker arm spindles (3). Replace the rocker arm if damaged.
	Installing
6	Insert the guide shafts into the camshaft bearing bridge.	At the same time, preassemble the rocker arm on guide shaft.
			Figure
			Figure
	Risk of injury  to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
7	Heat camshaft bearing bridge to approx. 150°C	Heat the camshaft bearing bridge uniformly, but do not heat it over 160°C; there is a danger of structural changes.
			WH58.30-Z-1001-28A
			*WH58.30-Z-1003-28A
8	Cool the rocker arm spindle (3)
9	Place heated camshaft bearing bridge on board (4)		Figure
10	Install rocker arm spindle (3)	Insert the rocker arm spindle (3) in the camshaft bearing bridge by tapping gently with a hammer and simultaneously remove the guide shaft. Ensure that the rocker arms do not get jammed.
11	Align the rocker arm spindle (3)	In order to align and secure the rocker arm spindle (3), fit two screws through the mounting bores in the camshaft bearing bridge. The oil supply bores of the rocker arm spindle (3) point towards the cylinder head.
12	Install camshaft bearing bridge	Engines 112, 113 except engines 113.967 /990 in models 219, engines 113.964 /971 /989 /993	AR05.20-P-7103AU
		Engine 113.993 in model 463	AR05.20-P-7103GX
		Engines 113.967/ 990 in model 219	AR05.20-P-7103TY
		Engine 113.964 in model 164	AR05.20-P-7103GZ
		Engine 113.971 in model 251	AR05.20-P-7103RT
		Engine 113.989 in model 171	AR05.20-P-7103VT

Fig 2: Identifying Board (112 589 10 59 00)

Fig 3: Identifying Extraction Drift (112 589 00 15 00)

Fig 4: Identifying Guide Shaft (112 589 02 31 00)

Fig 5: Identifying Guide Shaft (112 589 03 31 00)