Hoses And Lines; Ignition Cables And Caps; Nuts And Bolts - BMW 745i Repair Instructions

2.2 Hoses and Lines
All air-carrying connections as well as vacuum and pressure lines must be mounted according to the spe-
cifications.
73013086
73013087
WRONG CORRECT
Only use specified connecting hoses and lines!
Absolute cleanliness is essential when detaching any air-carrying part (plug openings).
If dirt is allowed to enter the exhaust gas turbocharger, the blades will be destroyed by the very high
speed when operated.
After assembling components in the repair sector it will be necessary to check all air-carrying connec-
tions as well as vacuum and pressure lines for leaks!
LEAKY OR DISCONNECTED HOSES CAN CAUSE ENGINE DAMAGE OR A DROP IN POWER
OUTPUT!
2.3 Ignition Cables and Caps
The ignition cables and caps employed on the supercharged engine are made of a high temperature
resistant materiall.
Only the specified ignition cables and caps may be used for the supercharged engine!
2.4 Nuts and 80
1
lts
Since very high temperatures will be experienced at the exhaust end, special high temperature resistant
nuts from the aircraft construction industry are apphed for the installation of attachments. These are
self-locking, twelve-sided nuts with a collar for temperatures up to 650
0
C (1200
0
F) according to Avia-
tion Standard LN 9339.
Only these nuts may be used for the exhaust manifold, bypass valve as well as exhaust assembly to the
manifold or bypass valve!
Tighten nuts to the specified torque!
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