Honda Bmw 5 Service Manual

11 7-55 
Camshaft Timing Chain 
< Set timing chain on exhaust camshaft end 
< Working in cylinder head  cavity, remove  timing chain cover 
bolts 
(arrows). 
< Remove  secondary chain  lower guide bolts (arrows). Re- 
move chain  guide. 
NOTE- 
Bolt on intake camshaft side  is long  and extends  into timing 
chain  cover. 
- Remove  crankshaft loclting tool from  transmission bellhous- 
ing.   

~ ~~ ~ 
I Camshaft Timing Chain I -- 
lnstall crankshaft  holding tool (BMW special  tool 11 8 190/11 
8 200). Make sure cut outs  in  tool engages  openings  in 
damper  assembly.  While counterholding  crankshaft with 
special  tool, remove crankshaft  center  bolt  (A). 
CAUTION- 
Do not use flywheel locking tool to hold crankshaft stationary 
NOTE- 
The crankshaft hub  centerbolt is tightened to  a torque of 410 
Nm (300 ft-lb). 
4 Install crankshaft  damper  puller (BMW special  tool 11 8 210) 
to...

... -. 
rpp- --- Camshaft Timing Chain1 
Timing chains,  installing 
(M52 TU and M54 engines) 
CAUTIOI\C 
The procedure outlined  below assumes  that the camshaits 
are lockedin  the 
TDC installation position with speciallocling 
tools as shown earliel: 
- inspect timing chain  sprockets. Inspect guide  rail  and ten- 
sioner rail  for damage.  Replace any part  that is worn 
or dam- 
aged. 
NOTE- 
If  any  sprockets  are being replaced  due to wear,  the chain 
should  also be replaced. 
4 Primary...

(camshaft Timing  Chain 
- To install lower timing case  cover: 
- Clean cover and cylinder  block sealing surfaces 
Use new 
gaskets and  coolant pipe O-ring. 
Remove  timing chain  cover dowel pins from engine  block. 
Drive timing cover  dowels in until they just protrude slightly 
from sealing  surface. 
Apply a  small bead  of silicon sealer  (Three Bond 1209 
63 
or equivalent) to corners  of cylinder head where timing 
cover  meets cylinder head  and engine  block. 
Tap  cover  into position...

Camshaft Timing chain/ 
Fit top sprocltet to primary  timing chain and  install on exhaust 
camshaft so  that  pointer (arrow) on sprocltet lines  up with 
cylinder head sealing  surface. 
Position sprocket  so that chain slack is on tensioner rail side. 
4 Insert BMW special tool 11 4 220 in  cylinder  head and  screw 
in  adjustment  screw 
by hand just until  it contacts tensioning 
rail  and  chain slack  is removed. 
NOTE- 
BMW special  tool 71 4 220 is an adjustable  primary chain 
tensioner  that...

11 7-60 
Camshaft Timing Chain 
< Install and tighten down  threaded locating studs  (arrows) in 
end  of exhaust  camshaft. 
Tightening torque  Exhaust camshaft  locating 
stud 20 Nrn (15 ft-lb) 
4 Install secondary  chain tensioner  on cylinder  head. 
- Make sure tensioner  is locked  in compressed  position as 
described  earlier. 
Fit exhaust  camshaft splined sleeve, aligning gap  in sleeve 
splines with  corresponding  gap on 
camshaft splines 
(arrows).   

- Camshaft Timing chain] 
< Slide splined shaft onto  exhaust camshaft, aligning larger 
tooth with corresponding  gap of splined  sleeve (arrows). 
Slide splined shaft  in further until 
3 small  or elongated  slots 
in  splined  sleeve are centered to 
3 threaded holes in 
sprocket. 
4 Place intake and exhaust  sprocltets in BMW special tool 11 6 
180.  Position  spline gap on intalte sprocket  (arrow) as shown 
and place secondary chain  on sprocltets. 
< Carefully  remove chain and sprockets  from...

1 17-62 
Camshaft Timing Chain 
4 Install intake camshaft spring plate  so that FRONT  mark is 
visible. Install mounting nuts (arrows)  finger tight. 
4 Worlting at exhaust side, insert  sprocket mounting Torx 
screws into threaded lioles (arrows). 
Initially tighten screws  to approx. 
5 Nm (44 in-lb), then back 
off one-half  turn. 
4 Fit thrust spacer (A) on exhaust camshaft.   

Camshaft Timing chain1 
4 lnstall spring plate (A) to exhaust  camshaft.  Make sure  that 
F mark is visible. 
NOTE- 
If F mark is no  longer  visible,  install spring  plate as shown 
Install  exhaust  camshaft impulse  wheel, aligning 
mark (B) 
with top  edge of cylinder head (A). Install mounting  nuts (ar- 
rows) 
finger  tight. 
4 Pull out  exhaust  splined shaft until it stops 
- Press  down on secondary chain tensioner  and remove ten- 
sioner lock-down  tool.   

~~~ ~ 
Camshaft Timing Chain - 
< Preload primary  chain: 
Tighten  adjusting screw  on BMW special tool 
11 4 220  to 
specified torque. 
Tightening torque 
Primary chain tensioner preload 0.7 Nm (6 in-lb) 
< Preload  exhaust camshaft spring  plate by  pressing on im- 
pulse wheel while  tightening mounting nuts 
(arrows) finger 
tight. 
4 Install  BMW special tool 11 6 150 (VANOS setup  bracket)  to 
front  of 
cyl~nder head  timing case. 
Tighten tool  mounting nuts 
(arrows) by hand, then tighten...