Check/adjust axial play at stator of electric machine - AR08.10-P-1012-01EH

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TRANSMISSION 724.2

MODIFICATION NOTES

09.01.2014

Special tool 724 589 03 63 00, removal and installation tool added

AS 1, 2, 5

ELECTRIC MACHINE

Number	Designation		Transmission 724.2
BE08.10-P-1001-01A	Axial play on electrical machine stator	mm	0, 3...0, 6

ELECTRIC MACHINE

Number	Designation			Transmission 724.2
BE08.10-P-1002-01A	Preload force on ring package	-	N	10000
BE08.10-P-1002-01A		equivalent to	Nm	40

Fig 1: Identifying Removal And Installation Tool (724 589 03 63 00)

Courtesy of MERCEDES-BENZ USA

Check axial play

Fig 2: Thrust Ring, Spindle And Weld Ring

Courtesy of MERCEDES-BENZ USA

Screw thrust ring (8.3) onto the spindle (8.1) with a reversible ratchet until the thrust ring (8.3) lies on the weld ring (10.2) of the ring package () (arrow A).
Turn down the spindle (8.1) using a torque wrench until the required preload force has been reached on the ring package.

Fig 3: Digital Vernier Caliper, Electrical Machine And Weld Ring

Courtesy of MERCEDES-BENZ USA

Lay digital vernier caliper (1), as shown, onto the sealing surface on the housing of the electrical machine (2), lay measuring rod for the digital vernier caliper (1) on the weld ring (10.2) and set digital depth gauge (1) to zero.
Remove digital vernier caliper (1).

Fig 4: Thrust Ring, Spindle And Weld Ring

Courtesy of MERCEDES-BENZ USA

Turn up the spindle (8.1) until the thrust ring (8.3) no longer touches the weld ring (10.2) (arrows A).

Fig 5: Electrical Machine, Retaining Ring And Digital Vernier Caliper

Courtesy of MERCEDES-BENZ USA

Measure the dimension between the sealing surfaces on the housing for the electrical machine (2) and retaining ring (10.1) using the digital vernier caliper (1), as shown.
The determined dimension represents the ACTUAL dimension of the axial play on the stator. If the display on the digital vernier caliper (1) shows -0.5 mm, for example, that means that the axial play is 0.5 mm.

Adjust axial play

Set axial play by exchanging the retaining ring (10.1).
Retaining rings (10.1) are available in thicknesses of 3.0, 3.4 and 3.8 mm.
Repeat checking procedure; correct axial play if necessary.