BMW 7 Series: Removing Hydraulic Chain Tensioner For Timing Chains On Left Side (N63)
Notes
WARNING: Chain tensioner is pre-tensioned.
Release lock pin only in installed state.
Danger of injury!
IMPORTANT: Risk of damage! The engine must not be cranked when the chain tensioner is removed.
The timing chain may jump.
Necessary preliminary work
- Remove TIMING CASE COVER at top left
Crank engine back at central bolt (1) against direction of engine rotation by approx. 90º.
Fig. 268: Cranking Engine Back At Central Bolt Against Direction Of Engine
Rotation By Approx. 90º
IMPORTANT: The timing chain on the chain tensioner becomes the tight end on cranking back.
Do not crank engine without chain tensioner or special tool 11 9 900.
Piston (1) of chain tensioner must be pressed in against oil pressure in housing (see arrow).
Fig. 269: Identifying Piston Of Chain Tensioner Pressed In Against Oil
Pressure In Housing
If the chain tensioner piston is retracted over its full length, a 3.5 mm drill bit or a suitable lock pin must be positioned.
Fig. 270: Identifying Chain Tensioner Piston Retracted Over Its Full Length
Release screws (1).
Tightening torque 11 31 5AZ.
Remove chain tensioner (2).
Fig. 271: Identifying Chain Tensioner And Screws
IMPORTANT: Danger of injury! Chain tensioner is under high preload force.
Chain tensioner arrangement:
- Piston
- Expansion element
- Compression spring
- Housing
Fig. 272: Identifying Chain Tensioner Arrangement
Installation note:
Replace all gaskets and sealing rings
Assemble engine.
READ NEXT:
Removing Hydraulic Chain Tensioner For Timing Chains On Right Side
(N63)
Notes
WARNING: Chain tensioner is pre-tensioned.
Release lock pin only in installed state.
Danger of injury!
IMPORTANT: Risk of damage!
The engine must not be cranked when the chain tensioner is rem
Replacing Both Timing Chains (N63)
Notes
WARNING: Burning hazard! Wear gloves.
Necessary preliminary work
Remove lower TIMING CASE COVER
To facilitate removal and installation of timing chains, turn engine
over with special tool 0
Rocker Arm With Bearing Mount
REMOVING AND INSTALLING/RENEWING ROCKER ARMS ON RIGHT SIDE (N63)
Necessary preliminary work
(cylinder bank 1 to 4)
Remove INLET AND EXHAUST ADJUSTMENT UNIT on right side.
Remove right INLET CAMSHAF
SEE MORE:
Extension
Minimum set: Mechanical tools Extension MW
Note: (2 pieces) Pullout extension for 33 5 040, 33 5 050, 33 5 060.
Storage Location
A18
B18
SI number
01 21 06 (300)
Consisting of:
Fig. 19: Identifying Extension (335070)
1 = 0495592 Extension
NOTE: (Extension (1 piece) )
Extractor MW
Note: (Rillex extr
Tire pressure monitor- Actions in the event of a flat tire
Normal tires
Identify the damaged tire.
Check the tire inflation pressure in all four
tires, for instance using the tire pressure gage
of a flat tire kit.
For tires with special approval: when the tire
inflation pressure in all four tires is correct, the
Tire Pressure Monitor may not have b
