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Home >> BMW >> 2009 >> 650i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1661 (Manual Transmission - Repair) >> Inner Gearshift Components >> 23 31 545 Replacing Both Locking Bolts For 6th/Reverse Gear (I Transmission) - Transmission Removed

23 31 545 Replacing Both Locking Bolts For 6th/Reverse Gear (I Transmission) - Transmission Removed

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Special tools required: 

IMPORTANT: In petrol engines, sealing caps 1 and 2 are located above the circlip. 1=Locking bolt for 6th gear 2=Locking bolt for reverse gear
Fig 1: Sealing Caps 1 And 2 Are Located Above Circlip (Gas Engine)
G00495578Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: In diesel engines, sealing caps 1 and 2 are located below the circlip. 1=Locking bolt for 6th gear 2=Locking bolt for reverse gear
Fig 2: Sealing Caps 1 And 2 Are Located Below Circlip (Diesel Engine)
G00495579Courtesy of BMW OF NORTH AMERICA, INC.

For diesel engines: Lever circlip (1) out of housing with a suitable tool. Installation note: Install circlip (1).

Fig 3: Lever Circlip (1) Out Of Housing With A Suitable Tool
G00495580Courtesy of BMW OF NORTH AMERICA, INC.

Using a suitable tool (1), drive hole into sealing cap (2) and lever out of housing. Important! Bore hole must not be damaged. A burr or a dent can cause the sealing cap to leak. Installation note: Replacing sealing cap (2). Note: Illustration shows: Sealing cap for reverse gear

Fig 4: Drive Hole Into Sealing Cap
G00495581Courtesy of BMW OF NORTH AMERICA, INC.

With petrol engines: Remove circlip (1) and washer (2). In diesel engines, no washer is fitted.

Fig 5: Remove Circlip (1) And Washer (2)
G00495582Courtesy of BMW OF NORTH AMERICA, INC.

Remove compression spring and locking bolt. Important! Compression springs and locking bolts for 6th gear and reverse gear must not be mixed up.

GEAR IDENTIFICATION

6th gear locking bolt Reverse gear locking bolt
Curved chamfer Straight chamfer
Weaker compression spring Stronger compression spring
NOTE: Graphic shows: Reverse gear locking bolt
Fig 6: Reverse Gear Locking Bolt
G00495583Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: 6th gear locking bolt: Bevel must point in bell housing downwards to reverse gear! Reverse gear locking bolt: Bevel must point in bell housing upwards to 6th gear!
Fig 7: Bevel Must Point In Bell Housing Downwards To Reverse Gear
G00495584Courtesy of BMW OF NORTH AMERICA, INC.

With petrol engines: Using special tool 23 4 023, drive locking bolt with compression spring, washer and circlip simultaneously into housing.

For diesel engines: Using special tool 23 4 023, drive locking bolt with compression spring, sealing cap and circlip simultaneously into housing.

Fig 8: Using Special Tool 23 4 023, Drive Locking Bolt With Compression Spring
G00495585Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: It is essential to ensure the circlip engages completely.

With petrol engines: Drive in sealing cap (1) with special tool 23 4 021.

Fig 9: Drive In Sealing Cap (1) With Special Tool 23 4 021
G00495586Courtesy of BMW OF NORTH AMERICA, INC.