Workshop Manuals Factory service & repair Land Rover
01 Discovery Series II - Workshop Manual - 1999MY ON - 6th Edition - NAS02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 INTRODUCTION32 33 GENERAL INFORMATION34 35 GENERAL DATA36 IDENTIFICATION NUMBERS37 38 TORQUE WRENCH SETTINGS39 40 LIFTING AND TOWING41 CAPACITIES, FLUIDS, LUBRICANTS AND SEALANTS42 43 44 MAINTENANCE45 46 ENGINE - V847 48 EMISSION CONTROL - V849 50 ENGINE MANAGEMENT SYSTEM - V851 FUEL DELIVERY SYSTEM - V852 53 COOLING SYSTEM - V854 55 MANIFOLDS AND EXHAUST SYSTEMS - V856 57 58 59 CLUTCH - V860 61 MANUAL GEARBOX - R38062 63 TRANSFER BOX - LT230SE64 65 66 AUTOMATIC GEARBOX - ZF4HP22 - 2467 PROPELLER SHAFTS68 69 REAR AXLE70 71 72 73 74 75 FRONT AXLE76 77 78 79 STEERING80 FRONT SUSPENSION81 82 83 REAR SUSPENSION84 85 86 87 BRAKES88 RESTRAINT SYSTEMS89 90 DOORS91 EXTERIOR FITTINGS92 93 INTERIOR TRIM COMPONENTS94 SCREENS95 96 97 SEATS98 99 SUNROOF100 CHASSIS AND BODY DIMENSIONS101 102 103 104 PANEL REPAIRS105 106 107 108 BODY SEALING MATERIALS109 110 111 112 113 CORROSION PREVENTION AND SEALING114 PAINTING115 HEATING AND VENTILATION116 117 AIR CONDITIONING118 119 WIPERS AND WASHERS120 CHARGING AND STARTING121 122 LIGHTING123 BODY CONTROL UNIT124 125 126 ALARM SYSTEM AND HORN127 128 WINDOWS129 IN CAR ENTERTAINMENT130 HARNESSES131 DRIVING AIDS132 NAVIGATION SYSTEM133 INSTRUMENTS
Land Rover Discovery II80 · FRONT SUSPENSION
80 · Steering & suspension

Description - ACE (FRONT SUSPENSION) (page 5 of 13)

Make
Land Rover
Model
Discovery II
Section
DESCRIPTION AND OPERATION
FRONT SUSPENSIONDescription - ACE · page 5 of 13
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FRONT SUSPENSION

DESCRIPTION AND OPERATION

60-13

The above sequence is applied to each of the six pistons for every revolution of the central shaft and cam. When the 
engine is running the sequence occurs rapidly creating a constant flow of fluid. The fluid flow varies with the engine 
speed and the rotational speed of the central shaft. The pressure felt at the actuator, created by the flow from the 
pump, is controlled by the pressure control valve in the valve block.

The pump has a displacement of 8.5 cm

3

/rev and an operational pressure of 135 bar (1958 lbf.in

2

). The pump output 

flow ranges from 7.0 l/min (1.85 US Gallons/min) at 775 rev/min to 9.25 l/min (2.44 US Gallons/min) at 7625 rev/min.

System pipes
Fluid is moved through the ACE system via a series of pipes and hoses. The pipes are mounted on brackets at 
strategic points to assure quiet operation of the system.

The pipes from the pump to the valve block and from the valve block to the reservoir are one piece items which are 
fitted at the factory before the body is attached to the chassis. If these pipes require replacement in service, the pipes 
must be cut to facilitate their removal. 'In service' replacement pipes are available in two parts with a connector to seal 
the joint.

The flexible hose which supplies pressure from the pump to the supply pipe attached to the front cross member is 
fitted with an attenuator. The attenuator comprises a bullet shaped valve which is located between two spiral wound 
springs held at each end of the flexible hose. This valve operates as a restrictor to damp pressure waves of hydraulic 
fluid from the pump, reducing noise and strain on components downstream. The attenuator is integral with the supply 
hose and pipe and cannot be serviced separately.

Parts & tools for this job For Land Rover Discovery

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