Remove/install balance shaft

AR03.20-D-1000SF

Remove/install balance shaft

18.02.2020

Engine

642 in model 470, 471

Engine

642.896/898/992/993 in model 906

Modification notes

27.02.2018

Clean sealing surfaces on cap and crankcase, new addition

Operation step 9

Shown on engine 642 in model 906

1

Balance shaft

5

Hole

9

Screw

2

Cap

6

Correctional weight

10

Crankshaft

3

Crankcase

7

Drill bit Ø 8.5 mm

11

Timing chain

4

Screw

8

Bracket

12

Cable tie

Topical note

Notes on threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Remove engine.

Model 470, 471

AR01.10-S-2400PS

2

Attach engine to assembly stand.

Model 470, 471



000 588 00 31 00 Assembly stand for cars

WS01.00-N-3028B

3.1

Remove flywheel.

MODEL 906 with transmission 711

AR03.30-D-8002SF

3.2

Remove drive plate.

Model 470, 471, model 906 with transmission 722

Model 470, 471

AR03.30-S-8003PS

MODEL 906 with transmission 722

AR03.30-S-8003SE

4

Remove engine crane with load tilter from engine.

Model 470, 471



000 588 00 62 00 Load tilter

WS01.00-P-0102B

5

Remove cap (2).

 Installation: Replace cap (2).

 Screw, balance shaft cap to rear crankcase

*BA03.20-N-1002-02A

Sealant, Loctite 5970, 50 ml

*BR00.45-Z-1013-01A

6

Remove right-hand camshaft sprocket.

Model 470, 471

AR05.20-S-6040PS

Model 906

AR05.20-D-6040SF

 Fix timing chain (11) on cylinder head and do not lower in timing chain chamber.

7

Remove timing case cover.

Model 470, 471

AR01.40-S-8000PS

Model 906

AR01.40-S-8000SE

8

Attach timing chain (12) to crankshaft (11) using a cable tie (10) and detach on cylinder head.

 Installation: The marking (arrow) on balance shaft (1) must point vertically upwards then lay timing chain (11) on balance shaft (1).

If the camshafts or the crankshaft (10) were turned,



Check basic position of balance shaft (1).

AR03.20-D-3637SF

9

Clean sealing surfaces on cap (2) and the crankcase (3).

AR01.00-P-0050-01A

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A

Loctite 7200

*BR00.45-Z-1038-04A

10

Insert a drill bit  Ø 8,5 mm (7) with the shaft at the front into bore (5).

 Drill bit Ø 8.5 mm (7) serves as an arrestor for releasing and tightening screw (4) of balance weight (6).

11

Unscrew screw (4) and remove balance weight (6).

 Screw, balance weight to rear balance shaft

*BA03.20-N-1001-02A

12

Pull 8.5 mm dia. drill bit (7) out of the bore (5).

13

Remove screw (9) and remove bracket (8).

 Bolt to crankcase at front to secure balance shaft

*BA03.20-N-1003-02A

14

Pull balance shaft (1) out of crankcase (3) to the front.

15

Install in the reverse order.

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

16

Perform engine test run and check engine for leak tightness.

 Balance shaft

Number

Designation

Engine 642

BA03.20-N-1001-02A

Screw, balance weight to rear balance shaft

Stage 1

Nm

20

Stage 2

°

90

 Balance shaft

Number

Designation

Engine 642

BA03.20-N-1002-02A

Screw, balance shaft cap to rear crankcase

Nm

8

 Balance shaft

Number

Designation

Engine 642

BA03.20-N-1003-02A

Bolt to crankcase at front to secure balance shaft

Nm

9

Repair materials

Number

Designation

Order number

BR00.45-Z-1013-01A

Sealant, Loctite 5970, 50 ml

A 003 989 98 20 10

BR00.45-Z-1038-04A

Loctite 7200

Henkel AG & Co. KGaA
http://www.loctite.de

BR00.45-Z-1046-04A

Loctite 7063 (400 ml) cleaning spray

A 001 986 71 71 09