Tightening torque BMW 528i 1997 E39 Service Manual

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Cylinder Head and Valvetrain .-
4 While maintaining tension on timing chain, rotate crankshaft
at vibration dampener from
30" before TDC in direction of ro-
tation (clockwise) until number
1 cylinder is at TDC position
with line between the OIT mark (arrow) on front pulley
aligned with boss on lower timing chain cover.
4 Secure crankshaft in TDC position with BMW special tool
11 2 300 (arrow).
Slide impulse wheel on intake camshaft, aligning boss with
raised portion on camshaft (arrow).
Fit thrust spacer
(A) to intalte camshaft and tighten down with
threaded locating studs (arrows). Place longer threaded por-
tion of studs into camshaft.
Tightening torque
Impulse wheel studs to intake camshaft (M7)
20 Nm (15 ft-lb)

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11 6-31
Cylinder Head and Valvetrain
< Install primary timing chain on timing chain sprocket and
place on exhaust camshaft so that pointer on sprocket
(arrow) lines up with cylinder head sealing surface.
4 Insert BMW special tool 11 4 220 into timing chain tensioner
bore and bring center spindle into contact with tensioning rail.
Tighten until slack is removed, but do not pretension timing
chain.
NOTE-
BMW special tool 11 4 220 is an adjustable primary chain
tensioner and simulates the function of the tensioner.
- Recheck arrow on primary sprocket is aligned with upper
edge of cylinder head. Reposition sprocket if necessary.
4 Insert and tighten threaded locat~ng studs (arrows) in ex-
haust camshaft.
Tightening
torques
Exhaust camshaft locating stud 20 Nm (15 ft-lb)

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. .
Cylinder Head and Valvetrain
Install exhaust camshaft impulse wheel, aligning pointer (B)
with top edge of cylinder head (A). Install mounting nuts (ar-
rows) finger tight.
4 Pull out exhaust camshaft splined shaft to stop.
- Press down on secondary chain tensioner and remove ten-
sioner lock-down tool.
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)

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1 16-36
I Cylinder Head and Valvetrain
4 Preload exhaust camshaft spring plate by pressing on im-
pulse wheel while tightening mounting nuts (arrows)
fingel
tight.
4 Install BMW special tool 11 6 150 (VANOS setup bracket) to
front of cylinder head timing case. Install nuts (arrows) finger
tight, then tighten down uniformly until special tool is in full
contact with cylinder head.
CAUTION--
Male sure aNgas1ef material Is removed from face of cyiin-
der head. Clean sealing face and keep free of oil.
4 Secure camshaft sprockets and impulse wheels:
Tighten mounting screws (A) on exhaust camshaft impulse
wheel to approx.
5 Nm (44 in-lb).
Tighten mounting nuts (B) on exhaust and intake sprocket
assemblies to approx.
5 Nm (44 in-lb).
Torque down mounting screws (A) and nuts (B) to final
specifications.
Tightening torques Sprocket assembly to camshaft initial torque
5 Nm (44 in-lb)
Sprocket assembly wheel to carnshaft
M7 tom screws (A) 20 Nm (15 ft-lb)
M6 mounting sciew (6) I0 Nm (8 ft-lb) - - -
- - Remove crankshaft locking tool from crankcase.
- Remove camshaft locking tools from cylinder head.

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I Cylinder Head and Valvetrain
- Remove adjustable primary timing chain tensioner tool and
reinstall primary chain tensioner cylinder to cylinder head.
Tightening torque
Primary chain tensioner cylinder
to 70 Nm (52 ft-lb)
cylinder head
- Remove flywheel locking tool from crankcase. Replace spe-
cial tool bore sealing plug.
- Remove camshaft locking tools from cylinder head
Install intake camshaft cover and cylinder head cover.
Check for correct seating of half-moon seals (A) in back of
cylinder head cover.
Use a small amount of Three Bond
8 1209 or equivalent
sealing compound at corners
(B) of half-moon cutouts.
Seat gasket and seal corners at VANOS unit with Three
Bond
@ 1209.
Tightening torque Cylinder head cover to cylinder head
(M6) 10 Nm (89 in-lb)
- Installation of the remaininq parts is reverse or removal, not- -
ing the following:
Change engine
011 and f~lter as descr~bed in 020 Mainte-
nance.
Reconnect battery.
To prevent damaging the engine electronic systems, install
all ground wire previously removed, including the ground
wires for the ignition coils.
Tightening torque
-
Radiator cooling fan to coolant pump 40 Nm
(30 ft-ib)
Spark plug to cylinder head
25 Nm (18 ft-ib)

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1 Cvlinder Head and valvetrain1
Evenly tighten down bearing cap nuts in 'I? turn steps start-
ing at number
1.
Tightening torque
Camshaft bearing cap 14 Nm (10 ft-lb)
BMW special tool 11 3 430 on camshaft.
4 Rotate camshafts until marker bores (arrows) point up-
wards.

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- -
Cylinder Head and valvetrain1
4 Bearing caps are marked with a code for location.
NOTE-
The camshaft caps are stamped with a code letter - "E for
the intake side and
'HA" for the exhaust side. Number code is
for position on head, with number
1 being the front bearing
cap.
CA UTIOI\C
Do not mix up camshaft bearing caps.
Install and evenly tighten down bearing cap nuts in
'I2 turn
steps starting at number
1.
Tightening torque
Camshaft bearing cap 14 Nrn (10 ft-lb)
4 Install BMW special tool 11 3 430 on camshaft.

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Cylinder Head and valvetrain'
Fit sensor gear with mark (arrow) pointing upwards. Install
bolts and finger tighten.
4 Attach BMW special tool 11 7 380 to right cylinder head in
place of upper timing case cover.
Install BMW special tool
11 3 390 into 11 7 380.
Using BMW special tool 00 9 250, tighten adjustable ten-
sioner screw on
11 3 390 to 0.7 Nm (6.3 in-lb).
- T~ghten camshaft sprocket bolts in the following order:
1. Exhaust camshaft, left head.
2. Exhaust camshaft, right head.
3. Intake camshaft, left head.
4. Intake camshaft, right head.
Tightening torques Sprocket
to camshaft flange 15 Nm (I 1 ft-lb)
- Remove camshaft locking tools from both cylinder heads.
- Remove crankshaft locking tool.
4 lnstall oil lines to left and right cylinder heads.
- Remove adjustable timing chain tensioner tool and setup
block from right cylinder head.

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11 6-54
Cylinder Head and Valvetrain
Replace primary timing chain tensioner O-ring (arrow) in
right cylinder head.
- lnstall right upper timing cover to engine:
Remove old gasket from right timing cover.
Clean gasket groove and install new gasket.
Apply Three Bond
12098sealant to joint between cylinder
head and timing cover. Install remaining timing cover bolts
finger tight.
lnstall left upper timing chain cover to engine:
Remove old gasket from right timing chain cover.
Clean gasket groove and install new gasket.
Insert lower cover timing chain cover retaining bolt (arrow)
to cover, then fit cover to cylinder head.
Apply Three Bond 12098 sealant to joint between cylinder
head and timing chain cover. lnstall upper timing cover
bolts finger tight.
4 Remove cylinder head cover sealing gaskets from right cyl-
inder head cover. lnstall BMW special tool 11
1 41 1 into gas-
ket groove of cylinder head cover.
lnstall right cylinder head cover with BMW special tool
11
1 41 1 to right cylinder head. Fit cylinder head cover retain-
ing nuts to cylinder head cover studs at cylinders
1 and 2
(first two cylinders on right cylinder head).
Tighten nuts uniformly in
'I2 turn steps.
NOTE-
BMW special tool 11 1 41 1 presses upper timing chain cover
to level of cylinder head.
Tightening torque Cylinder head cover nuts
10 Nm (7.5 n-lb)
- Tighten right upper timing cover retaining bolts in two passes.
Tightening torque
Timing chain cover to head
10 Nm (7.5 ft-lb)

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11 6-55
Cvlinder Head and valvetrain1
4 Remove cylinder head cover sealing gasltets from left cylin-
der head cover. Install BMW special tool 11 1 412 into gasket
groove of cylinder head cover.
Install left cylinder head cover. Fit cylinder head cover re-
taining nuts to cylinder head cover studs at cylinders
5 and
6 (first two cylinders on left side cylinder bank).
* Tighten nuts uniformly in 'I? turn steps.
NOTE-
BMW special tool 11 1 4 12presses upper timing chain cover
to level of cylinder head.
Tightening torque Cylinder head cover
nuts 10 Nm (7.5 it-lb)
- Tighten left upper timing chain cover retaining bolts in two
passes.
Tightening torque
Timing chain cover to head
10 Nm (7.5 ft-lb)
- Remove cylinder head covers and remove BMW special
tools 11 4 41 11412 from cylinder head covers.
- Fit new gasket to cylinder head cover without strain.
- Apply Three Bond@ 1209 sealant to joints between cylinder
head and timing cover.
4 Malte sure half-moon cutouts (A) at rear of cylinder heads fit
correctly to cylinder head sealing surface. Apply Three
Bond@ 1209 sealant at corners of half-moon cutouts (B).
- Remainder of installation is reverse of removal.