1 Series E87 120i (N46) 5-door
11 25 530
Removing and installing/replacing all pistons
(N40 / N42 / N45 / N46)
Special tools required:
•
00 9 120
•
11 2 050
•
11 8 141
•
11 8 330
Necessary preliminary tasks:
•
Remove engine.
•
Mount engine on assembly stand.
•
Remove cylinder head.
•
Remove oil dipstick guide tube.
•
Remove oil sump.
•
Remove intake air manifold.
Important!
Oil pump and balancing shafts form a single unit and must not
be separated.
Remove oil pump balancing shaft unit.
Removal:
Removal of pistons is described separately from installation.
Assembly sequence for removal and installation is different.
Important!
When reusing pistons, install conrods and bearing shells at
the same point in the same installation position.
Individual conrod replacement is not permitted, replace
conrods in sets only.
Conrods and conrod bearing caps are denoted with the same
pairing letters, do not mix them up.
RA Removing and installing/replacing all pistons (N40 / N42 / N45 / N46)
BMW AG - TIS
24.01.2013 04:27
Issue status (12/2007) Valid only until next DVD is issued
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