Jaguar AJV8 engine / 5HP24 transmission. Manual - part 9

Engine

AJ-V8/5HP24

37

EGR System

The EGR system is controlled by the ECM and
consists of an EGR valve and a transfer pipe.
The EGR valve is a 4 pole stepper motor installed
on the rear of the induction elbow. The valve is
cooled by the coolant return from the electronic
throttle.
The transfer pipe connects the right exhaust
manifold to the EGR valve.

EGR VALVE AND TRANSFER PIPE

303-048

Engine

AJ-V8/5HP24

38

Engine Accessories

All engine accessories are rigidly mounted to
improve refinement, ie. there are no shock
mounts.
Accessory mounting brackets on the left and
right sides of the engine support the A/C
compressor/ PAS pump and the generator
respectively. Dowels between the accessory
mounting brackets and the engine ensure the
accessory pulleys are accurately aligned with the
accessory drive belt (for further details of the
accessories see Technical Guide, XK8
Introduction).

ACCESSORY MOUNTING BRACKETS

303-019

Engine

AJ-V8/5HP24

39

Replace Belt

New Belt Maximum Length

New Belt Minimum Length

Belt Wear

Indicator

AUTOMATIC TENSIONER

Accessory Drive

A single seven ribbed belt drives all the engine
mounted accessories. The torsional vibration
damper on the front of the crankshaft drives the
belt. An automatic tensioner, located on the left
accessory mounting bracket, keeps the belt at
the correct tension. An idler pulley on the right
accessory mounting bracket increases the wrap
angle around the generator pulley.
The torsional vibration damper incorporates
compressed rubber between its inner and outer
diameters to absorb vibration and shock loads.
The automatic tensioner consists of an idler
pulley on the end of a spring loaded pivot arm.
The pivot arm can be turned counter-clockwise
(viewed from the front of the engine) for removal
and installation of the belt. A belt wear indicator
is incorporated on the rear of the pivot arm.

PAS Pump

A/C 
Compressor

Generator

303-018

ENGINE ACCESSORIES AND DRIVE BELT

303-020

Engine

AJ-V8/5HP24

40

3

4

5

2

6

1

20

19

18

7

8

9

10

11

12

13

14

15

16

17

Connectors
1.

PI032, B Bank VVT solenoid

2.

PI027, B Bank Knock Sensor

3.

PI004, Engine Coolant Temperature Sensor

4.

PI026, A Bank Knock Sensor

5.

PI031, A Bank Valve Timing Solenoid

6.

PI035, MAFS (On vehicle)

7.

PI050, Generator

8.

PI040, Oil Pressure Switch

9.

PI018-PI021, A Bank Ignition Coils 1-4
PI022-PI025, B Bank Ignition Coils 1-4

10. PI006, Throttle Position Sensor

ENGINE HARNESS

11. PI002, Engine Management Harness (On vehicle)
12. PI001, Engine Management Harness (On vehicle)
13. PI033, Throttle Valve Motor
14. PI034, EGR Valve
15. PI015, Camshaft Position Sensor
16. PI042, Accelerator Pedal and Mechanical Guard

Position Sensors

17. PI007-PI010, A Bank Injectors 1-4

PI011-PI014, B Bank Injectors 1-4

18. PI037, A/C Compressor Lock Sensor
19. PI036, A/C Compressor Clutch
20. PI017, Engine Speed Sensor

303-057