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Document Information

Condition: Permanent and/or upon inspection

Measure

McLaren deploy 3 Spring and Damper Solutions across our product:

1. CVSA2: Stand-alone Spring/Damper unit with Front and Rear Anti Roll Bars
for Roll control. Fitted to the following vehicles:

P13: 540C, 5708S, 570S Spider, 570GT, 600LT, 600LT Spider

P22: GT

2. Kinetic: Interconnected Spring/Damper units with Hydraulic Roll Control
and Rear Z-Bar for Pitch Control. Fitted to the following vehicles:
P11:12C, 12C Spider, 625C, 650S, 650S Spider, 675LT, 675LT Spider

P14: 720S, 7208S Spider

3. K-Damper: Interconnected Damper units with Hydraulic Roll and Heave
control. Fitted to the following vehicles:

P12: P1
P15: Senna

The following section details the hydraulic interfaces along with the process to be
followed if a component failure is expected.
Known locations for component quality occurrences are identified below.

1. Rod Seal Leak

Leak propagates from the seal pack and runs down the rod before gathering
at the lower spring coils. Usually identifiable by a spring that displays dirt
contamination on its lower coils but is clean above this point.

2. Nose Lift Collar Leak

a. Upper Seal - Leak propagates from the upper seal and runs down the
outer lift gaiter. Usually identifiable by oil residue on the lift gaiter.

b. Lower Seal - Leak propagates from the seal pack and runs down the
damper body. Usually identifiable by oil residue on the damper gaiter.

2c

a. Clear, well-lit and in-focus images of the before and after condition.

Kinetic Damper

Known locations for component quality occurrences are identified below.

a Rod Seal Leak

Leak propagates from the seal pack and runs down the rod before gathering
at the lower spring coils. Usually identifiable by a spring that displays dirt
contamination on its lower coils but is clean above this point.

2. Kinetic Line Leak

Residue between the O-Rings (2a) and Backing Plate (2b) can run down the
machined surface on the damper forging. This can be wiped clean and will not
return.

3. Pressure Sensor Leak

If pressure sensor is only hand tight a leak can be present. If pressure sensor
torque is to target, oil residue is usually a result of a weep from the Kinetic
Lines (see point 2).

4. Accumulator Leak

Oil present around either the top surface of the accumulator (4a) or around
the interface with the Valve Housing forging (4b).

5. Nose Lift Collar Leak

a. Upper Seal - Leak propagates from the upper seal and runs down the
outer lift gaiter. Usually identifiable by oil residue on the lift gaiter.

b. Lower Seal - Leak propagates from the seal pack and runs down the
damper body. Usually identifiable by oil residue on the damper gaiter.

c. Banjo Fitting - Leak propagates from the banjo/lift block interface.
Usually identifiable by oil residue running down the front of the lift
gaiter from the banjo fitting.

a. Clear, well-lit and in-focus images of the before and after
condition.

Kinetic Damper overview image

K-Damper

Known locations for component quality occurrences are identified below.

1. Rod Seal Leak
Leak propagates from the seal pack and runs down the heave body. Usually
identifiable by a discolouration of the heave body.

2. Kinetic Line Leak

Residue between the O-Rings (2a) and Backing Plate (2b) can run down the
machined surface on the damper forging. This can be wiped clean and will not
return.

3. Pressure Sensor Leak

If pressure sensor is only hand tight a leak can be present. If pressure sensor
torque is to target, oil residue is usually a result of a weep from the Kinetic
Lines (see point 2).

4. Accumulator Leak

Oil present around either the top surface of the accumulator (4a) or around
the interface with the Valve Housing forging (4b).

Heave Circuit Banjo Fitting.

6. Oilleak from the banjo connections, usually a function of an incorrectly
torque fastener.

4b

a. Clear, well-lit and in-focus images of the before and after
condition.

K-Damper overview image

Parts Information
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Attachments
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KA Update Information
11/05/2021 - KA Review

21/07/2021 - KA Review Q2