Honda Bmw 5 Service Manual

11 3-27 
Cylinder Head Removal and Installation 
< Remove fuel rail mounting bolts  (arrows): 
- Carefully pry fuel rail  off manifold. 
Separate fuel line support bracket  at rear  of intake  mani- 
fold. 
Guide fuel 
line(s) out  of rear  of engine  compartment while 
lifting fuel rail  out. 
4 Remove intake manifold mountino hardware  (arrows). 
I from falling into the engine  intake. I 
4 Remove  cylinder head top  cover: 
- Remove plastic trim  caps (arrows). 
Remove cover  hold down fasteners  and...

I Cylinder Head Removal  and Installation 
4 Drain engine coolant and  remove coolant hoses: 
Remove  expansion tank cap on radiator. 
Place a 
3 gallon pail beneath  engine to capture coolant 
Remove  coolant drain plug  (arrow) located on exhaust 
side  of cylinder 
2 of  engine  block. 
4 Drain radiator into a 3 gallon pail  by removing plastic  drain 
plug  (arrow)  completely. 
Use  caution  when draining  and disposing  of engine  coolant. 
Coolant  is poisonous  andlethal to humans andpets. Pets...

Cylinder Head Removal and Installation 
4 If applicable,  remove secondary air injection  pump: 
Disconnect  hose at one-way valve 
(A). 
Remove  bolts at support  bracket on  strut tower  (arrows). 
Disconnect  electrical harness from bottom  of secondary 
air  injection  pump. 
Remove  mounting  bracket from strut  tower. 
4 Remove ignition coils: 
* Disconnect  ignition coil harness connectors. 
Remove  coil mounting  fasteners. 
Remove  coils. 
* Remove ground straps. 
CA UTIOI\C 
Note location  of...

Cylinder Head Removal and installation - - .- - - - - 
4 Disconnect electrical harness connections at  exhaust cam- 
shaft  position sensor and exhaust camshaft  VANOS control 
valve  (arrows). 
4 Remove  banjo bolt  from VANOS  unit oil pressure  line. Use 
banjo  bolt to attach 
BMW special tool 11 3 450  (compressed 
air fitting)  to VANOS  control unit. 
CAUTIOI\C 
Oil will  drain  from pressure  line. Have  a drain container  and 
rags  ready  Do not  allow oil to run  onto  drive  belts. 
4 Cover...

11 3-31 
Cylinder Head Removal  and Installation 
Remove sealing plug from  special tool bore on  lower left side 
of  engine block near flywheel.  Secure crankshaft  in TDC po- 
sition with 
BMW special tool l l 2 300 (arrow). 
4 Unscrew  and remove two cylinder  head cover studs 
(arrows) at rear  of cylinder  head. 
4 Secure  camshafts  in TDC  position using BMW special  tool 
set 
11 3 240. 
- Disconnect compressed air  line, leaving compressed  air fit 
ting attached  to VANOS  unit. 
4 Unscrew...

[Cylinderead Removal -. . and Installation -7 - . .. 
4 Oil will drain from  plugs (arrows) when  removed. Have a 
container  and rags  ready.  Do not allow oil to  run onto drive 
belts. 
Pull sealing caps straight out  of VANOS  unit using short  nee- 
dle nose pliers. 
NOTE- 
Additional  oil may  drain  from VANOS  unit. 
Remove set screws (left-hand thread)  on ends  of intake  and 
exhaust camshafts. 
CAUTION- 
Set screws have left-hand  threads. Loosen in clocltwise di- 
rection.   

- - 
-- .- Cylinder ~ead~ernoval and Installation I - -. 
Remove VANOS unit: 
Remove engine lifting  eye. 
- Remove VANOS mounting nuts  (arrows) and pull VANOS 
unit  and  metal  gasket off. 
CAUTION- 
Do not crank  the engine with  VANOS unit removed. Pis- 
tonhalve inteiference may result. 
NOTE- 
The  VANOS  unit will contain  a small  quantity  of oil. Place 
shop  towel to catch oil  as unit  is removed or tilted. 
CAUTION- 
If the  VANOS  adjustment unit  is replaced, or if operations  are...

- - 
I Cylinder Head  emo oval and Installation - 
< Remove exhaust camshaft impulse wheel mounting  nuts 
(arrows).  Remove impulse wheel 
(A). 
4 Remove spring plate (A). 
4 Remove intake  camshaft sprocltet mounting  nuts (arrows) 
and  remove  spring plate (labelled 
FRONT). 
< Remove torx screws from  exhaust camshaft sprocket 
(arrows).   

11 3-35 
- cylinder Head Removal and  Installation] - 
< Lift off exhaust  and intake  sprocltets  together with secondary 
chain, thrust spacer 
(A), and  splined  shafl (B). 
CAUTION- 
Splined shafts share  the same  part number  for both  intake 
and  exhaust  camshafts.  Used splined  shafts must be 
rein- 
stalled  in their original positions. 
Remove exhaust  camshaft splined  sleeve 
(A) and shaft (B). 
Remove  secondary chain tensloner mounting bolts (arrows) 
and remove  tensioner with...

1 13-36 
Cylinder Head Removal and Installation 
4 Remove sprocket  mounting studs (arrows) from exhaust 
camshaft. 
Lift  primary chain  sprocltet off exhaust camshaft. 
sprocket from chain. 
4 Place timing  chain on end of exhaust camshaft  Remove 
4 Spline  retaining screws (arrows) should 
not be removed 
from  camshaft.