This Page copied with kind permission by James Dawe
The Land Rover Perentie Project
by Jim Doyle Bushguide@onaustralia.com.au
The Truck, Lightweight, Land Rover 110 4X4 and Truck, Light, Land Rover 110 6X6 families of vehicles were introduced into service in 1987 to replace the Toyota Land Cruiser, Land Rover Series 2A and Land Rover Series 3 fleets. Project PERENTIE was the main Project, however other Projects and Services purchased a number of vehicles. 3005 Land Rovers 110 4X4 vehicles and 660 Land Rover 6X6 are in service at this stage.
All in-service Land Rover variants are built for military use and are based on the Land Rover 110 series of civilian vehicles. The two basic variants being Truck, Lightweight, Land Rover 110 4X4 and Truck, Light, Land Rover 110 6X6. All variants have constant four-wheel drive and a vacuum operated inter-axle differential lock, fitted to the transmission. When actuated, the differential lock also engages six-wheel drive on Land Rover 6X6 variants. The 6X6 variants have an extended chassis and there are chassis modifications to 4X4 and 6X6 variants to allow helicopter slinging, shipping tie down and vehicle recovery.
The engine used in all variants is a 3.9 litre Isuzu 4 cylinder Diesel with direct fuel injection, with a turbo charger fitted to 6X6 variants. A heavy-duty four-speed gearbox, with two-speed integral transfer case, is fitted to all variants. There is a high proportion of common parts between the 4X4 and the 6X6 variants and civilian models. There are eight 4X4 and 8 6X6 variants currently in service deliver from Project PERENTIE. These are as follows:
The planned life of individual vehicles is ten years. The production of vehicles under Project PERENTIE was spread over five years. Based upon these figures the vehicles will have a Life of Type (LOT) of 15 years.
The first vehicle entered service on the February 6, 1987 which was ARN (Army Registration Number) 48-001. This vehicle will be familiar to those that watched The Bush Tucker Man programs, in the first series. This vehicle is still in service. The last vehicle to enter service under Project PERENTIE was ARN 200-264, on January 21, 1992.
The vehicle is powered by an Isuzu 4BD1, 3.9L, N Series, Water Cooled, Four Cycle, Four Cylinder in line, Naturally Aspirated, Direct Injection Diesel Engine, providing power of 66kW at 3200rpm and Max torque of 245Nm at 1900rpm. Changes to Engines fitted to Perenties consist of:
The four speed LT95A Transmission is fitted to all 4X4 Perentie Variants. The main gearbox is the same as the earlier civilian 110 gearbox, in that it has helical constant mesh gears and all forward gears are equipped with synchromesh. The Transfer case used on the Perentie vehicles is upgraded and incorporates an improved six bearing mounted transfer cluster, other differences between the civilian and Perentie being that in the centre differential, Niflor cross pins are used, bushes and thrust washers have been upgraded. The Transfer gear change linkage has been relocated simular to the five speed to allow the later transmission tunnel to be used. The Diff Lock Vacuum Switch has been upgraded and relocated to be fascia mounted. The Transfer gearing varies depending on the variant. All variants except the RFSV have a high range gear of 0.996:1 where the RFSV has a high range of 0.123:1 to give better torque in high range. All have constant four-wheel drive.
Perentie vehicles are fitted with a single right hand mid mounted (under the driver's seat) fuel tank with a capacity of 68 litres.
The rear axle is a GKN Salisbury 8HA type with a load rating of 1950 kg with a ratio of 3.54:1 and has two full floating axles (Half shafts).
The steerable front drive axle has a load rating of 1350 kg and bevel type differential with a ratio of 3.54:1, to transmit drive via enclosed constant velocity joints to the front wheels. The Panhard rod mounting are reinforced.
The standard Perentie is fitted with Gemmer Manual Steering; all Perenties are fitted with a Heavy Duty Track Rod.
The front suspension is similar to the civilian specification but has been upgraded. The Station Wagon utilises unlevelled suspension. Spring specifications are the same on all variants with the rear springs being identical from side to side.
The brake system is unchanged from the civilian build with the exception of the brake pad wear sensors fitted to the front discs and a PBR Master cylinder, which is dual system.
Whilst there are some common body panels, the body is specifically designed for the Perentie, such as door pockets, bonnet mounted "gardening tools", Lowered windscreen mounts, rear tool boxes. Hard Top and Station Wagon variants are fitted with a H/D reinforced fibreglass tropical roof and Soft Top variants are fitted with Roll Over Protection System (ROPS) which provide part of the canvas support structure. The Perentie chassis is significantly different from the civilian, comprising of Aust/UK sourced componentry being upgraded to accommodate the higher GVM. The chassis is hot dipped galvanised.
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