Honda Bmw 5 Service Manual

Cylinder Head Removal -- and lnstallati~i 
4 Cylinder head  bolt loosening sequence. 
- Using BMW special tool 11 2 250 or an  equivalent  tool, loos- 
en cylinder head bolts  in sequence.  Discard head  bolts. 
- Separate the cylinder head  from the block and remove  head. 
Evaluate head  as described  in 
116 Cylinder Head and Val- 
vetrain. 
Cylinder head, installing, M52 engine 
If the camshafts  were removed and installed  while the cylin- 
der  head  was off, a minimum waiting  time is required...

I Cylinder Head Removal and Installation 
4 Check that two  locating dowels are correctly  positioned in 
block  and are not damaged. 
- Apply  permanently  elastic  sealing compound  Three Bond 
1209 8 to joints  where  cylinder  block joins timing case cover. 
- Place  new cylinder  head gasket  on cylinder block. 
NOTE- 
The  word OBEN or TOP: printed on  the gasket, should 
face  up. The cylinder head 
gasket will fit  correctly in only  one 
orientation. 
- With camshafts  locked in TDC oosition...

I Cylinder Head Removal  and Installation I 
< Use BMW  tool 11 2 110 or torque angle  gauge to tighten  cyl- 
inder head bolts in  sequence to stage 
2 and 3. 
Tightening  torques 
Cylinder  head to cast iron 
bloclc 
Staoe 1 
staie 2 
Stage 3 
Cyllnder head to aiumlnum block 
Stage 
1 40  Nm (30 it-lb) 
Stage 2 +90° 
Staoe 3 -80 
- Tighten cylinder head-to-lower timing chain  cover bolts. 
Tightening  torques 
cylinderhead to lower timing chain cover 10 Nm (89 in-lb) 
- Inspect secondary chain  guide...

-- 
Cylinder Head Removal and Installation 
NOTE- 
BMW special tool 11 4 220 is an  adjustable  primary chain 
tensioner  and simulates  the function  of the hydraulic 
tensioner. 
- Check that elongated holes  in primary  sprocket  are now  cen- 
tered  to bolt  holes in camshaft and chain  is free  of slack.  If 
not,  reposition sprocket to chain and  reinstall. 
- lnstall secondary timing chain guide and secondary chain 
tensioner.  Tighten mounting bolts (tensioner remains locked 
down for  now...

- -. 
Cylinder Head Removal and lnstallation 
NOTE- 
Be Sure  the secondary  timing chain tensioner  is locked  down 
and  the exhaust 
camshaif mounting bolts are  loose  before 
proceeding. 
- Install  VANOS  control unit. See  VANOS control unit, install- 
ing 
(M52 engine)  in 117 Camshaft  Timing Chain. 
CAUTION-- 
Incorrect installation ofthe VANOS control may result in dam- 
age  to the engine  valvefrain. 
- Install exhaust  manifolds using  new gaskets and nuts.  Coat 
manifold studs with...

1 13-22 
Cylinder Head Removal  and Installation 
CYLINDER HEAD REMOVAL AND 
~NSTALLATION (M52 TU AND N154 
ENGINES) 
WARNING - 
Due  to risk  ofpersonal injur)c be sure  the engine  is cold  be- 
fore 
beqinning the  removal  procedure. 
Cylinder head removal and installation is a time consuming 
repair procedure requiring multiple special service  tools. 
Read the entire procedure before beginning the repair. 
This topic includes  the following procedures: 
* Cylinder  head, removing, M52 TU and M54...

- -- 
Cylinder Head Removal  and Installation 1 -- 
< Remove  complete  air filter housing  assembly  with mass  air 
flow  sensor: 
Loosen 
intalte duct  hose  clamp  (A) at throttle  assembly. 
Loosen  clamp and remove  idle control line from intake duct 
(B) and  disconnect  idle  speed control  valve electrical har- 
ness  connector. 
Disconnect electrical harness connector 
(C) from mass air 
flow sensor. 
Remove air filter  housing mounting screw 
(D). 
Disconnect vent  tube (E). 
. Loosen air...

. .- - 
Cylinder Head Removal and Installation 
- Working at side  of intake  manifold near left strut  tower, dis- 
connect intake manifold resonance  valve electrical harness 
connector. 
4 Disconnect fuel injector electrical harness connectors  from 
injectors. 
- Use small screwdriver to pry  out wire lock clip on fuel injec- 
tor 
1 connector. 
Repeat  for remaining injectors. 
Release harness conduit  fasteners from injector  rail. 
- Disconnect intake air temperature  sensor electrical har- 
ness...

11 3-25 
Cylinder Head Removal and Installation 
4 Working  beneath car (on left side  under driver seat),  remove 
fuel  filter  cover  and clamp 
off fuel hose(s). 
NOTE- 
M54 engines  use a single fuel line to  the non-return fuel rail. 
Disconnect  fuel  lines by pressing  in on  spring  lock (arrows). 
CAUTION-- 
Fuel  may be expelled  underpressure. Do not smoke or worlc 
near heaters or other fire hazards.  Keep a fire extinguisher 
handy  Before disconnecting fuel hoses, wrap  a cloth  around...

. - -- 
j Cylinder Head Removal and Installation 
4 Working at throttle  housing, unscrew  and disconnect electri- 
cal harness  plug 
(arrow). 
4 Disconnect electrical harness connector  at fuel tank venting 
valve 
(A) and  vent  hose  at quick disconnect fitting (arrow). 
- Working  under intake manifold, disconnect  the following: 
Engine  oil dipstick tube support. 
Oil  separator  return line from dipstick tube. 
Knock sensor  harness connector from  support. 
4 Working  underneath  car, remove...