Vehicles before change point in 1982
REMOVING AND INSTALLING CYLINDER HEAD
Disconnect ground wire at battery.
Remove air cleaner housing 13 71 000.
Drain coolant.
Installation: Bleed cooling system 17 00 039.
Detach warm water hoses (1 and 2).
Pull off wires on temperature transmitter.
Disconnect plug (3).


Siehe auch 13 71 000
Siehe auch 17 00 039
63311427 - click to zoom
 
Up to 1980 Models:
Detach exhaust pipes from reactor.
Detach exhaust support on transmission.
Installation: Install support to be without stress.
Check gaskets, replacing if necessary.

63018024 - click to zoom
 
Detach pipe lines and pull off from exhaust filter.

63011321 - click to zoom
 
Remove cylinder head cover 11 12 000.
Pull off plug connectors and remove distributor cap.
Pull off plugs from fuel injectors 1 ... 6 and plug (2).
Disconnect ground wire (3).
Remove accelerator linkage (4).
Pull off vacuum hoses from throttle housing and EGR line.
Installation: Adjust accelerator cable 35 41 421.


Siehe auch 11 12 000
Siehe auch * See Specifications
73311145 - click to zoom
 
Detach water hose (5) on throttle housing.
Loosen clamp (6).
Pull off wires from oil pressure switch.
Version with Auxiliary Air Valve:
Pull off wires from auxiliary air valve.

63011314 - click to zoom
 
Loosen holder (9) and clamp (10).
Pull off vacuum hoses (11 ... 14).
Installation:
11 red from EGR valve/red elec. switch valve
12 blue from EGR valve/pressure converter
13 white from collector/white elec. switch valve
Also refer to hose routing plan.
Detach vacuum hose (15).
Pull off plug (16) from cold start valve.
Version with Automatic Transmission:
Detach accelerator cable and take off holder from
collector.

63011316 - click to zoom
 
Detach fuel hoses (23 and 24).
Installation: Hose (23) from fuel filter to ring line.
Hose (24) from pressure regulator to return line.
For BMW 633 CSi:
Detach fuel feed and return lines from pressure
regulator and/or pipe.

63011320 - click to zoom
 
Pull off plugs (20 ... 22).
Lift out wire harness from clamps.

63011318 - click to zoom
 
Pull out wire harness through opening in intake
neck upward.

63011319 - click to zoom
 
From 1980 Models:
Remove heat shield and catalytic converter
18 00 020.
Only 1980 Models:
Remove water tank.
Pull off plug (1).
Pull off plugs on resistors and detach wire harness.


Siehe auch 18 00 020
63311428 - click to zoom
 
Disconnect ground wire (1).
Pull off plugs (1 ... 6) from fuel injectors and
disconnect wire harness.

63311435 - click to zoom
 
Pull off wire (1).
Pull off wires on oil pressure switch.
Detach vacuum hoses (2 and 3).
Loosen clamps (4) and take off fuel lines (5) as
well as the wire harness.

63311434 - click to zoom
 
Disconnect accelerator linkage.
Automatic Transmission:
Detach accelerator cable (1).
Tempomat Speed Cruise Control:
Disconnect accelerator cable (2).
Installation:
Adjust accelerator linkage 35 41 421.
Adjust accelerator cable 24 00 004.


Siehe auch * See Specifications
Siehe auch 24 00 004
63311433 - click to zoom
 
Detach hose (3).
Pull off wires on throttle switch.

63311432 - click to zoom
 
Remove intake pipe of cylinder no. 6.
Place wire harness aside.

73011204 - click to zoom
 
Installation:
Replace gasket, cutting off gasket behind the
staybolt.

73011205 - click to zoom
 
All Models:
Detach coolant hoses (17 ... 19).
Installation: Be careful not to mix up hoses.
Bottom hose (18) from cylinder head.
Top hose (19) to return line.

63011317 - click to zoom
 
Remove upper timing case cover 11 14 100.
Remove chain tensioner piston 11 31 090.
Open lockplates.
Take off sprocket.


Siehe auch 11 14 100
Siehe auch 11 31 090
63011119 - click to zoom
 
Installation: Install chain that dowel pin (1) is
located at bottom left.
Bore in sprocket must align with tapped bore
and cast tab.

63011120 - click to zoom
 
Loosen cylinder head bolts one after the other.
Unscrew and remove 4 cylinder head bolts.
Install locating pins to prevent movement or
turning of rocker arm shafts.
Take off cylinder head.

63011322 - click to zoom
 
Installation: Make sure there is no oil in cavities,
since otherwise bolts would not exert sufficient
force on cylinder head even when tightened to
specified torque. In addition, crankcase could be
cracked.
Clean cylinder head bolts and apply a light coat of
oil on threads and bearing surface of bolts´ heads.
Always replace cylinder head gasket.
Tighten bolts in order of 1 through 14 to specified
torque¹).


Siehe auch ¹) See Specifications
73311175 - click to zoom
 
Tighten bolts in three steps:
Step 1 - 34 to 44 Nm (25 to 32 ft.lbs.)
Step 2 - 67 to 71 Nm (49 to 51 ft.lbs.)
Step 3 - 75 to 81 Nm (54 to 59 ft.lbs.)
Run engine to operating temperature.
Tighten bolts by torque angle of 25±5°, regardless
of engine temperature.
Cylinder head is not tightened again after driving
car 1,000 km (600 miles).
Adjust valve play 11 34 004.
Adjust ignition timing 12 11 004.
Adjust engine idle speed and CO level 13 00 054.
Important: Valves must be adjusted additionally
if cylinder head or valves had been replaced, valves
or valve seats had been machined.


Siehe auch 11 34 004
Siehe auch 12 11 004
Siehe auch 13 00 054
73011216 - click to zoom
 
Vehicles after change point in 1982
REMOVING AND INSTALLING
CYLINDER HEAD
Unscrew exhaust pipes on manifolds and pipe clamp on transmission.
Installation:
Check gaskets, replacing if necessary.
Coat studs with copper paste "CRC"**.
Replace self-locking nuts.
Tightening torque*.


Siehe auch ** Source: HWB
Siehe auch * See Specifications
2811139 - click to zoom
 
Unscrew plug and drain coolant.
Disconnect battery ground lead.
Installtion:
Add coolant*** and bleed cooling system 17 00 039.
Replace engine oil***.


Siehe auch 17 00 039
Siehe auch *** See Service Information of Gr. 00
2811004 - click to zoom
 
Disconnect accelerator cable (7), cruise control cable (8) and throttle cable (9).
Installation:
Adjust accelerator cable - see 35 41 421.
Adjust cruise cable - see Group 65.
Adjust throttle cable - see Gr. 24.


Siehe auch 35 41 421
2811188 - click to zoom
 
M 30 B 32:
Pull off plug (2) and lift out wires.
Pull out hoses (3 and 4).
Loosen hose clamp (5).
Disconnect wire.
Unscrew nuts (6) and remove air cleaner with air flow sensor.

2811189 - click to zoom
 
Pull off plug (1) and lift out relay.
Disconnect wire harness.

2811207 - click to zoom
 
Pull off plugs.
Disconnect fuel return line (8) and water hoses (10).

2811208 - click to zoom
 
M 30 B 34:
Pull off plug (2) and lift out wires.
Pull off plug (3) and unscrew nut (4).
Pull of hoses (5 ... 8).
Disconnect wire (9).
Open clamp (10).
Loosen hose clamp (11).
Unscrew nuts (12) and remove air cleaner with air flow sensor.

2811332 - click to zoom
 
Unscrew engine wire harness (10) on positive pole.
Pull off plug (11).
Lift out relays (12 ... 14).
Lift out diagnosis socket (15).
Unscrew clamp (16).
Disconnect wire harness.

2811333 - click to zoom
 
Pull off plugs.
Disconnect fuel return line (17) and water hoses (18 and 19).

2811334 - click to zoom
 
All Models:
Disconnect fuel feed line and heater hoses (8 and 9).
Disconnect water hoses for expansion tank.
Pull of vacuum hose.

2811203 - click to zoom
 
Remove screw (13).
Disconnect wires (14 and 15) on alternator and starter.
Lift out and disconnect plug (16).

2811026 - click to zoom
 
Unscrew ignition lead tube (10) and distributor cap.
Disconnect diagnosis socket.
Remove screes (11).
Disconnect DME plugs (13 and 17).
Pull off hose (15) and take off cylinder head cover.
Installation:
Make sure gasket fits correctly.

2811204 - click to zoom
 
Connect DME plugs for reference mark and speed sensor signals, that gray
plug (17) is connected with that plug which is marked with a ring.

2811181 - click to zoom
 
Pull off plugs on fuel injectors (1 ... 6), cold start valve (7), idle positioner (8),
oil pressure switch (9) and throttle (10).
Unscrew clamp (11) and ground lead (12).
Disconnect engine wire harness and place aside to the right.

2811182 - click to zoom
 
Remove upper timing case cover 11 14 100.
Remove chain tensioner piston 11 31 000.
Open lockplates.
Unscrew sprocket.
Note:
Lockplates are not used again.
Tightening torque*.


Siehe auch 11 14 100
Siehe auch 11 31 000
Siehe auch * See Specifications
2811304 - click to zoom
 
Installation:
Install timing chain that dowel pin (1) is at bottom left when tapped bores are
perpendicilar to the engine.

2811030 - click to zoom
 
Unscrew cylinder head bolts in order of 14 through 1.
Insert Special Tools 11 1 063 as shown in picture, to prevent moving or turning
of rocker arm shafts.
Lift off cylinder head.

2811345 - click to zoom
 
Installation:
Keep oil out of cavities, since otherwise bolts would not exert sufficient pressure
on the cylinder head even though they are thightened to correct torque.
Engine block could also be cracked.
Clean cylinder head bolts.
Lubricate threads and bearing surfaces of bolt heads with a light coat of oil.
Replace cylinder head gasket - see 11 12 101.


Siehe auch 11 12 101
2811346 - click to zoom
 
Tighten bolts in order of 1 through 14 to correct torque* in three steps.
Important!
New cylinder head bolts without collar (better quality):
First tighten bolts 1 ... 6 with 60 ± 2 Nm (43.4 ± 1.4 ft. lbs.) - remove Special Tools
11 1 063 - then tighten bolts 7 ... 14 in first step.


Siehe auch * See Specifications
2811345 - click to zoom
 
Adjust valve clearance - see 11 34 004.
Only M 30 B 32:
Adjust engine idle speed/CO - see Group 13.
Tighten cylinder head bolts to torque angle* with Special Tool 11 2 110 regardless
of engine temperature in the third step (cylinder head cover removed again after
engine was run warm).


Siehe auch 11 34 004
Siehe auch * See Specifications
2811347 - click to zoom