Campaign number E765

Field campaign
Topic

V8T cold start valve coolant leak (SC 12/05)

Market area

Worldwide Bentley (1 WBE)

Brand

Bentley

Transaction No.

2030588/1

Campaign number E765
Note
Type
US code

Vehicle data

VST
Sales types
Type

MY Brand Designation Engine code Gearbox code Final drive code

3932* 2012 E

*

*

*

3932* 2013 E

*

*

*

3942* 2012 E

*

*

*

3942* 2013 E

*

*

*

Chassis numbers
Manufacturer Filler Type Filler MY Factory
SCB

***

**

*

c

c

SCB

***

**

*

D

c

From

To

Prod from Prod to

Documents
Document name
master.xml
master.doc

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Campaign number E765

Notes
Technical background
A seal in the coolant warm up valve may have not seated correctly during assembly. On assemblies
where this is the case a minor coolant leak will be evident in early life

Remedy
The coolant warm up valve on all affected vehicles must be checked for evidence of coolant leakage
then, once the coolant residue has been removed, the valve should be repeatedly cycled using the
process detailed in this document. This operation has been proven to correctly seat the seal in the
majority of cases whilst identifying the few valves that are not serviceable.

Customer notification
Please ensure

that~

affected vehicles are checked and repaired before delivery to customers.

This campaign is not applicable to cars that have been handed over to customers
You should also inform your new car sales department so that the vehicles affected can be checked
and repaired immediately (and not just before sale).

Warranty accounting instructions

Check only including 50 engine cycles
Warranty type

710 or 910

Labour Operation Code

19 84 01 20

Damage Service Number

E765

Damage Code
Time
Criteria ID

0066
80TU
01

Remove and replace - Coolant warm up valve
Warranty type

710 or 910

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Campaign number E765

Labour Operation Code

19 84 19 20

Damage Service Number

E765

Damage Code

0066

Time

640TU

Criteria ID

01

Genuine parts
Parts only required if leak is present after carrying out flow chart process

New Part Number

Description

Old Part Number

079 121 678 G +

coolant warm up valve 079 121 678 G

Quantity
1

green or yellow
identification spot in
the centre of the valve
housing (see figure 1
D)

Parts supply
If required replacement parts should be ordered from Bentley Motors Limited Crewe or through your
regional Bentley parts distribution centre

Parts despatch control

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Campaign number E765

Repair instructions
Technical background
A seal in the coolant warm up valve may have not seated correctly during assembly. On assemblies
where this is the case a minor coolant leak will be evident in early life

Check
If the vehicle is not already listed as repaired in the "Repair history" (in Elsa Pro), check the vehicle for
the campaig n identification mark , either a green or yellow mark on the valve housing (see position 'D'
Figure 1) or a green mark on the charge air cooler fastener (see Figure 5) if one of these marks is not
visible on an applicable vehicle then carry out the required work in accordance with these instructions

Genuine parts
Parts only required if leak is present after carrying out flow chart process

New Part Number

Description

Old Part Number

079 121 678 G +

coolant warm up valve 079 121 678 G

Quantity
1

green or yellow
identification spot in
the centre of the valve
housing (see fi gure 1
D)

Work

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Campaign number E765

Figure 1
1. Locate the coolant warm up valve assembly (B). It is incorporated into the main engine coolant
system and positioned adjacent to the crankshaft pulley, it is fitted with a distinctive bar code label
(see Figure 1)

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Campaign number E765

Figure 2
2. If the seal is leaking it will discharge a small amount of coolant from the valve spindle (A) into the
actuating arm housing , this will subsequently be visible on the outside lower edge of the housing
cover at point 'C'. Figure 2 shows the actuating arm housing cover removed . This is to aid
understand ing and clearly describe the leak path.

It is not a requirement of this procedure to

remove this cover. Note: the valve body in figure 2 is not fully representative of the series
production part.

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Campaign number E765

Figure 3
3. The in itial inspection is carried out using a mirror. Note: no parts have to be removed for the
inspection . Position the mirror so as to enable the underside of the lower edge of the housing
cover (B) to be viewed at point 'C'. Check for the presence of coolant on this face (see Figure 2
and 3)
4 . If there is any evidence of this component leaking coolant then spray the area with cleaning fluid to
remove the coolant residue before carrying out the repeated cycle procedure detailed in the flow
chart. If no coolant leak is evident on first inspection the flow chart procedure must still be
performed . This test will initially expose the valve to the condition in which a valve with the
incorrectly fi tted seal will leak, then by continued cycling in a controlled environment will correctly
position a misplaced seal , resulting in a seNiceable component.

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Campaign number E765

Figure 4
5. If any coo la nt leak is visible at the end of the above procedure then the valve must be replaced
Refer to workshop manual Rep Gp19 Engine coolant warm -up valve - To remove and refit.
6. If no coolant leak is evident on completion of the above procedure then the valve is serviceable and
therefore does not require replacement
7. On completion apply a green paint campaign mark to the charge air cooler fastener (see Figure 5)

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Campaign number E765

Identification

Figure 5

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