Timing Gear Cover; Fuel Pump; Piston; Connecting Rod - BMW D7 Workshop Manual

Fuel Regulator / Gear on the Crankshaft
Timing gear cover / Fuel pump
Set the engine block into the horizontal position
-
- Insert regulator lever and regulator spring
- Insert clamping sleeve into the regulating spring
with pointed pliers
Install start filling sealing ring and tighten M20
-
hex nut
- Install eccentric bolt with cap, plate and sealing
ring.
Insert regulator shaft and tighten both M10 hex
-
nuts.
- Insert stop pin into the regulator lever and
tighten hex nut.
Install gear on the crankshaft
- Before assembly, heat the cog for the
crankshaft on a heating plate or in an oil bath to
o
approx 80 C and assemble with tool No 74 64 1
333 526
When mounting the cog onto the crankshaft,
-
take care that the marking on the cog opposite
the key groove points to the outside
Turn engine block onto flywheel side.
-
When mounting the timing gear cover, adjust the
cog on the camshaft and the cog on the
crankshaft so that their markings are opposite
each other.
Check upper dead center and overlapping.
- Mount the timing gear gear cover with light taps
of a hammer and tighten both M16 hex nuts
NOTE
It is imperative that copper washers be used for the
timing cover screws
- Insert pump tappet and mount fuel feed pump
- Before assembling the pistons, heat them on a
hot plate. Insert gudgeon pin and the gudgeon
circlips.
- Turn the piston ring gaps of the two piston rings
and of the oil scavenge ring 120
Lightly oil the threads and the screw head
-
inserts of the connecting rod parts
- Insert the connecting rod bearing half with the
hole into the connecting rod cap
Insert the connecting rod bearing half without
-
the hole into the connecting rod
- Assemble the connecting rod. Tighten the
connecting rod screws with torque wrench and
6mm socket No 74 64 1 333 541 to torque of 40
Nm (4 kpm)
Install Regulator lever, regulator spring
Mount Regulator shaft, cog on crankshaft

Connecting Rod

Crankcase cover / dipstick / bearing cover
Install connecting rod in such a manner that the
scoop is filled through the scoop opening when
dipping into the lubricating oil. Scoop opening
must point in running direction. The lubricating
system is based on the centrifugal principle.
Set the cylinder slowly with great care onto the
piston so that no piston ring is broken or damaged.
Observe that the opening in the combustion
chamber located in the piston crown points towards
the flywheel side.
- Install crankcase cover with seal into the
underside of the engine block
- Insert dipstick
- Turn engine block to the horizontal
Assemble starting crank mechanism with
-
extractor tool No 666 332 00
- Screw on the cover to the timing gear cover
- Mount bearing cover
In order to avoid damage to the bearing cover during
assembly, use auxiliary bushing No 74 64 1 333 518
Fill the groove in the bearing cover between
-
packing washer and dust lip with ball bearing
grease
- Mount the sealing ring on the inside of the
holder, onto the holder with grease in order to
prevent slipping during assembly.
- Insert the thrust ring into the dry bushing with
the graphite coated side towards the outside.
Mount the cog onto the camshaft without
-
Woodruff key and tighten
The marking of the cog on the camshaft must align
o
to each other with the Woodruff key groove.
Coat the sliding surface of the dry bushing with
-
molykote grease
- Insert the cog with needle bearing into the dry
bushing
- Fill the housing with approx 100g of hot bearing
grease e.g. "Calypsol WDT" or equivalent
quality and assemble with gasket.
Timing gear cover, connecting rod
Cover on crankcase, starting crank device,
cog on camshaft
CAUTION
CAUTION
NOTE
21