Remove/install rocker arm unit

AR05.00-T-5521BB

27.6.01

ENGINE 457.941 in MODELNMB613.368

ENGINE 457.942 in MODEL NMB671.015 /020 /021 /030 /042 /332 /333

ENGINE 457.944 in MODEL NMB613.358 /367 /388

A05.00-0001-11

1 Screw

2 Rocker arm assembly

3 Valve bridge

L Length of shank

 	Remove/Install
1.1	Open left rear service flap	Model 671.015/020/021/030/042/332/333
1.2.1	Open rear lid	Model 613.358/367/368/388
1.2.2	Remove interior compartment flap above engine	Model 613.358/388	AR88.40-T-1100-03BA
		On model 613.367/368, see owner's manual.
2	Remove cylinder head cover	Model 613.358/367/388	AR01.20-T-5014BA
		Model 613.368	AR01.20-T-5014CA
		Model671.015/020/021/030/042/332/333	AR01.20-T-5014AA
		 Installation: Before installation adjust valve clearance of cylinder head cover.
	Set valve clearance	On model 613.358/388, model 671	AP05.30-T-0560BB
		Model 613.367/368	AP05.30-T-0560CA
3	Remove bolts (1)	Inspect length of shank of bolts (1).	*BE05.30-N-1001-04F
4	Detach rocker arm assembly (2) from cylinder head	 Installation: Check push rods for correct seating in the plungers. Oil push rod sockets with engine oil. Check rocker arm assembly for wear, if necessary:
		Disassemble rocker arm assembly (2) and replace worn parts.	AR05.00-T-5541BB
			*BA05.00-N-1001-01G
5	Detach valve bridges (3)	Check valve bridges (3) for wear, if necessary: 
		Replace valve bridges.
6	Install in the reverse order

Inspection data of valve timing

 Engine timing - general

Number	Designation			Engine 457.9


BA05.00-N-1001-01G	Bolt of rocker arm pedestal to cylinder head	1st stage	Nm	60
		2nd stage	°	90