Release and position rear drive module

AR01.00-P-3050MEV

Release and position rear drive module

21.11.2019

Engine

780.009 in model 451.391/491

1

Screw

6

Electrical connector

13

Transmission

2

Screw

7

Electrical line

M5

Electric drive motor

3

Lowering bolts

8

Ball head

N116/5

PDU high-voltage distributor control unit

4

Lowering bolts

9

Thrust bearing

10

Nut

15

Charge current line

X99/3

Vehicle wiring harness electrical connector

11

Folding clamp

16

Cable tie

X99/4

Vehicle wiring harness electrical connector

12

Brake booster vacuum line

13

Transmission

14

Shim

M5

Electric drive motor

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.

AS00.00-Z-0035-01A

Topical note

General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system

AH00.00-Z-0300-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on battery

AH54.10-P-0001-01A

 

Remove/install

1

Remove transmitter key and mains plug

2

Perform enable for the high voltage on-board electrical system

AR54.10-P-1160MEV

3

Remove interior flap above engine

AR88.40-P-1100-03MCC

4

Remove fender liners in left and right fenders

Engine 780.009 in model 451.391/491
except code 494 (US version)

AR88.10-P-1400MCC

Engine 780.009 in model 451.391/491
with code 494 (US version)

AR88.10-P-1400MCU

5

Remove cable ties (16) from charging current line (15)

6

Remove screw/bolts (arrows A) on left and right from rear apron

7

Unclip rear apron from brackets (arrows B) on left and right

8

Unhook ball head (8) on parking lock cable on transmission

9

Unhook counter bearing (9) on parking lock cable from transmission

10

Unscrew nuts (10) and remove folding clamp (11) with brake lines from the screw bolt

11

Remove cable tie (arrow D) in the area of the brake booster vacuum line (12)

 The cable tie (arrow D) includes the battery wiring harness, the ground line and the engine wiring harness.

 Installation: Replace cable tie (arrow S).

Lower, position

12

Position major assembly lifting platform below electric motor drive (M5) and transmission (13) and support electric motor drive (M5) with suitable base (14)



000 588 03 62 00 Lifting platform

WS01.00-P-0091A

13

Replace screw/bolts (1) by lowering bolts (4) and screw/bolts (2) by lowering bolts (3)



WF58.50-P-0350-01MEV


Only use lowering bolts (3,4) in combination with spacer sleeves.
If spacer sleeves are not used, the high-voltage battery on the electrical line connecting point (arrow C) can be damaged.

 Before screwing in lowering bolts (3), push spacer sleeves onto lowering bolts (3).

 Observe installation location of screw/bolts (1, 2).

 Screw/bolt, integral carrier to body

*BA35.10-P-1001-01F

 Record release bolt

*450589006200

14

Lower rear drive module carefully


When lowering the rear drive module check for unobstructed movement of the electrical lines and hoses.
Otherwise they may be damaged.

 When lowering, ensure that there is unobstructed movement between the rear drive module and the vehicle high-voltage battery on the electrical line connecting point (arrow C). Check unobstructed movement with aid of second person when lowering.

 When lifting rear drive module, ensure that the pull rod of the hand brake cable is routed in the guide in the undercarriage. Before tightening screw/bolts (1, 2) ensure that the parking brake functions properly by actuating the parking brake lever several times.

15

Remove lifting platform major assembly below electric motor drive (M5) and transmission (13)

16

Install in the reverse order

 Rear axle carrier

Number

Designation

Model 451.3/4

BA35.10-P-1001-01F

Screw/bolt, integral carrier to body

Nm

125