FRONT SUSPENSION: DESCRIPTION AND OPERATION (page 2 of 3)

FRONT SUSPENSION

DESCRIPTION AND OPERATION

60-5

Coil springs
Coil springs are fitted to the front axle of the vehicle. The front springs differ between petrol and Diesel variants. Each 
spring is retained at its base by the lower spring seat. The top of each spring is located in the upper spring seat 
isolator. The upper spring seat is manufactured from natural rubber , with a bonded metal plate and four bonded studs 
which provide for the attachment of the damper turret. The rubber isolator reduces noise transmitted to the chassis 
and body from the suspension.

The coil springs must be installed correctly. The bottom coil of the spring locates in a recess in the lower spring seat. 
The top coil of the spring is ground flat to locate the upper spring seat isolator.

Coil Spring Specifications – Models up to 03 Model Year
The front springs on petrol variants are manufactured from carbon chrome 13.9 mm (0.55 in) diameter bar. The spring 
has 7.6 coils and a free length of 377 mm (14.8 in). The petrol front spring is identified by a pink and orange stripe 
painted on a number of coils.

The front springs on Diesel variants are manufactured from carbon chrome 13.9 mm (0.55 in) diameter bar. The spring 
has 7.6 coils and a free length of 383 mm (15.0 in). The Diesel front spring is identified by a white and purple stripe 
painted on a number of coils.

Coil Spring Specifications – Models from 03 Model Year
The introduction of the 03MY vehicle introduced a range of additional spring fitments. These were introduced to cover 
the introduction of the 4.6l V8 engine, the fitment of a front mounted winch and to optimise the vehicle trim heights.

The coil springs are manufactured from silicon manganese 13.8 mm or 13.9 mm (0.54 in or 0.55 in) diameter bar. The 
following spring data table shows the colour codes, number of coils and spring free length.

Spring Data

The following table shows spring fitment applicablity.

Spring Fitment Applicability

The following table shows standard springs and uprated springs required when a front winch is fitted.

Winch Fitment Spring Applicability

Colour Code

Total No. of Coils

Free Length

Red/Purple

7.4

371 mm (14.6 in)

Yellow/Purple

7.4

378.4 mm (14.9 in)

Blue/Purple

7.4

365 mm (14.4 in)

Grey/Purple

7.4

387 mm (15.2 in)

Purple/Purple

7.4

373.8 mm (14.7 in)

Yellow/Orange

7.4

394.6 mm (15.5 in)

Green/Orange

7.4

382.6 mm (15 in)

Pink/Brown

7.6

405.6 mm (15.9 in)

Left Hand Drive

Right Hand Drive

RH side

LH side

RH side

LH side

Red/Purple

Red/Purple

Yellow/Purple

Blue/Purple

Yellow/Purple

Yellow/Purple

Grey/Purple

Purple/Purple

Grey/Purple

Grey/Purple

Yellow/Orange

Green/Orange

Standard Spring

Winch Fitted Spring

RH Side

LH Side

Both Sides

Red/Purple

Red/Purple

Grey/Purple

Yellow/Purple

Blue/Purple

Yellow/Orange

Yellow/Purple

Yellow/Purple

Yellow/Orange

Grey/Purple

Purple/Purple

Green/Orange

Grey/Purple

Grey/Purple

Green/Orange

Yellow/Orange

Green/Orange

Pink/Brown