Honda Bmw 5 Service Manual

							
< 6-cylinder models: Remove intake manifold to access  oil 
pressure  switch 
(arrow). 
V-8 models: Oil  pressure warning switch (arrow) is located 
under oil filter housing mounted  to left  inner fender panel. 
NOTE- 
Any time the oilpressure  warning switch  is removed,  be sure 
to  replace  the sealing  washer. 
Tightening torque  Oil 
~ressure switch  to oil  filter  housins 27 Nrn (20 ft-lb) 
Oil level warning switch, replacing 
(6-cylinder and 
V-8) 
4 Oil  level  warning switch is located  at bottom  of the  engine  oil 
pan. 
Drain  engine  oil before attempting  to remove  level warning 
switch. 
Be sure  to refill engine  and check for leaks after work  is 
completed. 
NOTE- 
Any  time the  oil level  warning switch  is removed,  be sure  to 
replace  the sealing  O-ring between switch  and oil pan.   
						

							
/Lubrication System 
Oil pump, removing and installing 
(&cylinder) 
Oil pump  assembly 
(6-cylinder  from 9/98) 
CAUTIOI\C 
Oil pump sproclcet nut has left-hand  threads. Turn clockwise 
to loosen. 
4 Version 1, M52 oil pump  assembly. 
1. Oil pump pressure  relief control  valve 
2.  Oil pump suction tube 
3. Suction tube support bracket 
4. Oil pump assembly 
5.  Oil pump drive  sprocltet 
6. Oil pump drive chain 
7. Oil pump drive sprocket nut (left hand threads) 
4 Version 2, M52  TU oil pump  assembly. 
1. Oil pump pressure  relief control  valve assembly 
2.  Oil pump suction pick-up and seal 
3. Oil pump 
4. Oil pump drive  sprocket 
5.  Oil pump shaft locking  nut (left-hand thread) 
6. Oil pump drive chain 
Version 
3, M54 oil pump  assembly, 
1. Drive chain 
2. 
MlO x 1 nut 
Tighten to 25  Nm (18 ft-lb) 
3. Oil pump sprocket 
4. Inner pump rotor 
5.  Outer pump rotor 
6.  Oil pressure  relief valve assembly 
7. M8 bolt. 
Tighten  to 23 Nm 
(17 it-lb) 
8.  Oil pump housing 
9.  Locating dowels 
10. Pickup  tube sealing O-ring 
11. Pickup  tube 
12.  M6 pickup tube mounting bolts 
Tighten  to 
10 Nm (89 in-lb)   
						

							
Lubrication System 
- Lower front suspension and remove oil pan,  as described 
earlier, to  gain access  to  oil pump. 
Remove  oil pump 
sprocket mounting  nut (left-hand  thread) 
(arrow). Lift sprocket off  together with  drive chain. 
Engines  produced  to 9/98: Remove  oil pump with  pick-up 
tube.  Pick-up tube  is bolted to  side of oil pump. 
Engines  produced  from 9/98 to 01/00:  Remove  pick-up 
tube, scraper tray  and oil pump  as a unit. 
Engines  produced  from 01/00:  Remove  oil pump pick-up 
tube  bolts  and remove  pick-up tube  before removing pump. 
Remove  mounting bolts from oil pump. Withdraw  pump. 
NOTE- 
Record location  of any  spacers between  pump and engine 
bloclc Note  positions  of locating  dowels. 
- Remove  cover from oil  pump and  check for wear  or scoring. 
Spin  oil pump  shaft and 
check that gears turn  smoothly. Re- 
place pump  if gears spin with  difficulty 
orany wear is present. 
- Inspect oil pressure relief valve  as described later. 
- Installation is  reverse of removal, noting the following: 
Replace  pick-up tube O-ring  (if applicable). 
- Align sprocket  splines to oil  pump  shaft spl~nes before 
tightening  sprocket  nut. 
- After adding engine  oil, start and run  engine. Raise engine 
speed  to 2,500  rpm until  oil pressure  warning  light goes  out 
(about 5 seconds). 
Tightening torques Oil  drain  plug to oil  pan  25 
Nm (18 ft-lb) 
Oil  pan  to engine 
bloclc 
M6  (8.8  grade) 
M6  (10.9 grade) 
M8 (8.8 grade) 
10 Nm  (89 in-lb) 
12 
Nrn (9  ft-lb) 
22 Nm  (16 ft-lb) 
Oil  pump  sprocket  to oil  pump  shait 
(M10 x 1) (left hand thread) 
25 Nm  (1 8 it-lb) 
Oil  pump  to  crankcase (ME) 22 Nm (1 6 it-lb) 
Oil  pump pickup tube  to cranltcase (M6) 10 Nm  (89 in-lb)   
						

							
11 9-24 
Lubrication System 
Oil pump, removing and installing (V-8) 
CAUTION- 
V8 engines: The oil pump  fasteners (including  the sprocket 
retaining  nut) are known  to vibrate  loose. This can  result in oil 
starvation  and engine  failure. Be sure  to 
checlc oil bolts  and 
nut  tighness whenever  the oil pump  is accessible.  If any  fas- 
teners  are found  to be  loose,  remove  them and reinstall  with 
Loctite 
8 and  torque  to specifications. 
- Remove  upper oil pan,  as described  earlier, to gain  access to 
oil  pump. 
4 If fitted, remove oil pump  sprocket cover fasteners  (arrows). 
Remove  cover. 
* Unclip oil return line (A). 
4 Remove oil pump sprocket  nut (arrow)  and sprocket  together 
with drive  chain. 
Unbolt oil pump mounting  fasteners (arrows) and remove 
pump. 
Remove  oil pressure  relief valve  and inspect  as described 
later.   
						

							
Lubrication System 
4 Replace O-ring seals (arrows) on engine  oil pipes. Oil seals 
lightly. 
CAUTIO& 
During  reinstallation,  do not  damage O-rings  on sharp  edges 
of  engine 
blocl
						

							
11 9-26 
/Lubrication System 
< Use Allen  wrench  to adjust chain slaclc (B) by turning thread- 
ed  spacer 
(A). 
Oil pump  chain adjustment 
Slack 
10 52 mrn  (0.394i0.079  in) 
- Coat remaining oil  pump mounting  fastener with Loctite 03. In- 
stall and  tighten. 
- Remainder  of assembly is  reverse of disassembly. 
- After  adding engine  oil, start and  run engine.  Raise engine 
speed  to 
2,500 rpm until oil pressure warning  light goes out 
(about 
5 seconds). 
Tightening  torques 
Lower  oil  pan  to upper  oil  pan 
M6  (8.8  grade)  10 
Nm  (89 in-ib) 
M6  (10.9  grade)  12 
Nm  (9 ft-lb) 
M8 (8.8  grade)  22 
Nrn (1 6 ft-lb) 
Oil  drain  plug to oil  pan (M12) 25 Nm (I8 ft-lb) 
Oil  pump cover  to oil  pump 
(M6) 10 Nrn  (89 in-lb) 
Oilpump sprocket  to shaft TKO) 45 Nm  (33 it-lb) 
Oil pump to engine bloclc 
M8 (8.8  grade)  22  Nrn (16 ft-lb) 
Oil pressure relief valve (&cylinder) 
Remove oil 
pump as described  earlier. The oil pump pressure 
relief  valve is  held in the side  of the 
oil pump  with a circlip. 
< Inspect oil pump  relief valve  components and  bore for scor- 
4. Sleeve 
5. Circlip 
- Install using  a new circlip. 
Oil 
pressure  relief valve assembly 
,- ..., !~. -.-~. - ~- -~!~~-% h. .- .,, /to-cy~~noer engrnej ing or other  damage. 
1. Control plunger 
2. Spring 
3. Sealing O-ring   
						

							
11 9-27 
Lubrication System 
Oil pressure relief valve (V-8) 
4 Remove oil pressure  relief  valve retaining circlip. 
Use  a suitable drift to  remove relief valve assembly from 
pump. 
CAUTION-- 
There  is high  spring pressure  in the relief valve. 
4 Inspect oil  pump relief valve components  and bore  lor scor- 
ing  or other damage. 
1. Control  plunger 
2. Spring 
3. Sleeve 
4. Circlip 
- Install using a new  circlip.   
						

							
120 lgnition System 
...................... General 
Special tools ................... 
Warnings and cautions ........... 
Engine management ............. 
................. lgnition system 
Ignition  system.  troubleshooting 
.... 
... Oscilloscope diagnostic  diagrams 
................ Misfire detection 
............. Ignition System Service 120-9 
.................... Ignition firing order  120-9 
.............. Disabling ignition system  120-10 
................... Checking for spark  120-1 0 
lgnition coil  assembly. 
................. testing and  replacing  120-1 0 
.............. Crankshaftspeedsensor  120-12 
............. Camshaft position sensors  120-1 4 
...................... Knocksensors  120-16   
						

							
Ignition System 
This repair group covers component troubleshooting and  re- 
placement information for the ignition system. 
When diagnosing  engine management problems, including 
on-board diagnostics (OBD 
11) fault code analysis,  also refer 
to  these repair groups: 
* 130 Fuel  Injection 
* ELE Electrical  Wiring Diagrams 
OED On-Board Diagnostics 
Special tools 
System diagnosis  and testing of the ignition system requires 
special test  equipment. 
4 LED test light 
(Tool No.  Baum 
1 1 15) 
4 Automotive  digital multimeter 
4 Primary voltage test harness 
(Tool  No. BMW  12 
7 020) 
- 
4 Secondary  voltage test  harness 
(Tool No.  BMW 12 
7 030)