BMW Marine N54 Top Mount Single Precision Turbo Kit Instructions

June 3, 2024
BMW Marine

BMW Marine N54 Top Mount Single Precision Turbo Kit

BMW-Marine-N54-Top-Mount-Single-Precision-Turbo-
PRODUCT

REMOVING AND INSTALLING OR REPLACING ALTERNATOR (N54, N54T, N55)[REP-REP- RAE9212N54-1231020 – V.7]

Repair instruction

Removing and installing or replacing alternator (N54, N54T, N55)

12 31 020 REP-REP-RAES9212N54-1231020-V.7

1231 020 Removing and installing or replacing alternator (N54, N54T,

N55)

Necessary preliminary tasks

  • Switch off the ignition.
  • Disconnect battery negative lead.
  • Remove charge air duct.
  • Remove the alternator drive belt.

Note: In order to remove the alternator, it is necessary to remove the air-conditioning compressor for the air conditioning system.

In so doing

  • Do not draw off air conditioning refrigerant.
  • Do not detach refrigerant lines from A/C compressor.
  • Do not remove A/C compressor; instead, remove from bracket only and place to one side.
  • Remove A/C compressor from bracket.

Note: For purposes of improved clarity, illustrations and description show A/C compressor removed.

  • Release bolts a few turns until bracket () is loose. not remove bracket (1).
  • Tightening torque 64 52 5AZ.
  • Unlock connector (1) and remove.
  • Remove protective cap and release nut underneath.

Tightening torque

12 42 1AZ

|

Type

|

Thread

| Tightening specifications|

Dimension

---|---|---|---|---
1AZ Alternator

cable to alternator

| N54 / N54T

/ N55

|

M8

|  | 19

Nm

  • Remove the positive battery cable (2).
  • Release screws.
  • Remove bracket (1) and alternator (2).

Tightening torque

12 31 1AZ

|

Type

|

Thread

| Tightening specifications|

Dimension

---|---|---|---|---
1AZ Alternator to

crankcase, top

| N54 / N54T

/ N55

| M8 x 85|  | 19

Nm

  • Assemble engine.

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