Checking operation of installed viscous clutch

1500

^ 1000 z

500

0

1

2

3

A (km/h)

5

7

8

9

A = Driving speed of front axle in kilometers per hour B = Pulling power of front wheels in Newton (N)

Test conditions:

To check, viscous clutch must be at room temperature

Test duration approx. 45 seconds (Determine measurement after 20 seconds)

Repeat measurement after viscous clutch has cooled off for 1 hour

1. Connect system tester and select „Actual values " menu (ABS speed) (Refer to Vol.

2. Place front wheels of vehicle onto brake

3. Switch off engine, engage parking brake and shift transmission into neutral position.

4. When the rollers have started, switch on ignition and press key > of system tester. The tester will then return to the point where diagnosis was interrupted.

5. Set front wheels into motion with dynamometer rollers (max. 5 mph) and determine tractive power of front wheels after 20 seconds.

Note

When measuring the wheels individually, add measurements obtained for both front wheels.

5. The viscous clutch is operative if the tractive power of the front wheels is within the boundary curves on the diagram. The driving speed of the front axle must be taken into account during these measurements (speed can be read off on System Tester 9288).

Example:

At a vehicle speed of 3 mph at the front axle, the tractive power must be between approx. 580 N and 1180 N if the viscous clutch is o.k. (cf. diagram).

39 40 19 Removing and installing differential lock

Tools

39 40 19 Removing and installing differential lock

No.

Designation

Removal

Installation

1

Hexagon head bolt

2

Tighten to 44 Nm (32 ftlb.)

2

Joint flange*

2

3

Hexagon head nut

11

Tighten to 23 Nm (17 ftlb.)

4

Washer

11

5

Holder

1

6

Cover

1

7

O-ring

1

Replace, oil lightly, do not twist

8

Differential or limited-slip differential

1

Readjust if required

9

Seal*

2

Pack space between dust and sealing lips with grease (e.g. Liqui Moly Pu 53). Use thrust piece 9252 to press in until it is seated against the stop

10

Bearing outer race

1

Pull out with suitable internal puller (e.g. Kukko 21 - 8)

Press in with suitable thrust piece

11

Bearing outer race

1

Pull out with suitable internal puller (e.g. Kukko 21 - 9)

Press in with suitable thrust piece

12

gear box

1

* The halfshaft flange and seal ring can also be removed and installed with the transmission installed.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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