Assembling The Crankcase Halves

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Fig 1: Identifying Special Tool

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SPECIAL TOOLS

Item

Designation

Special tool

Explanation

A⁽¹⁾

Surface seal Loctite 5900 or Drei Bond Type 1209

B⁽¹⁾

Metering pistol

Recommended for processing the surface seal Loctite 5900

⁽¹⁾	For explanation see Fig 1.

NOTE:

Only Drei Bond Silicon Type 1209 and Loctite 5900 should be used for surface sealing.
After application of surface seals (silicone bead), screw together within five minutes.
Observe the expiry date of the surface seal.

At the processing nozzle, cut off the first metering step at an angle.

Fig 2: Cutting Off Nozzle Tip
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NOTE:
- Do not process the sealant too generously.
- No sealant should be pressed into the crankcase when screwing.
Fig 3: Applying Uniform Bead Of Silicone On Crankcase
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Apply a uniform bead of silicone approximately 1.5 mm wide to the cleaned sealing surface of the crankcase half of cylinder bank 4 to 6. The silicone bead should be applied as shown in the following illustration.
Position the crankcase halves carefully and evenly. The sealant bead must not be damaged during this procedure.
Screw the crankcase into place. Mount the crankcase with new screws. The tightening torque is 13 Nm (9.5 ft.lb). Observe the tightening sequence.

Fig 4: Screwing Crankcase Into Place - View From Oil Pan Side
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Fig 5: Screwing Crankcase Into Place - View From Starter Side
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Fig 6: Screwing Crankcase Into Place - View From Belt Pulley Side
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Fig 7: Screwing Crankcase Into Place - View From Flywheel Side
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After tightening the crankcase halves, fasten the third fastening point between the crankcase half (cylinders 4 - 6) and special tool engine holder 9589.

Fig 8: Fastening Third Fastening Point
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