PERFORMANCE Transmission Roamerdrive Overdrive Units Defender DA9017 Overdrive Unit DA9017 DA9019 Replacement Rubber Gaiter Defender - up to 2007 The distinctive third lever on the centre console of a Defender identifies it as a vehicle equipped with a Roamerdrive overdrive. This rugged, bolt on accessory has been proven in hundreds of installations and tested under the most demanding expedition conditions. No other modification improves the performance and economy of your Land Rover like a Roamerdrive. The DS model overdrive is an auxiliary gearbox that is easily fitted to a Defender 90 or 110 with standard five speed transmission. The unit adds an optional 28% to the ratio of the drive train giving improved fuel economy. Reduced engine speed contributes to quieter more comfortable travel under motorway conditions and reduces wear and tear on mechanical components. The Roamerdrive is a completely mechanical device built in the tradition of rugged dependability that has made Land Rover the world’s favourite expedition vehicle. These overdrives have no electronic or hydraulic components. They are controlled by moving the convenient hand lever. Unlike a high ratio transfer case that will permanently detract from the versatility of the gearbox, the Roamerdrive does not alter the vehicle’s designed gear ratios. Off road performance is enhanced as the overdrive ratio can be added to any gear in high or low range. The Roamerdrive uses the same epicyclical gear technology as a modern automatic transmission and runs quietly. This is particularly evident at high speeds and makes driving a Defender for long distances a pleasurable experience. On long journeys Roamerdrive users have reported fuel savings of up to 18% - not surprising when you consider that the engine lopes along the highway at about 2,000rpm - a favourable spot on the diesel torque band. Although precise fuel savings will depend on your driving habits. DA1285 DA9016 DA9018 DA9017 DA9029 Transfer Case Dipstick Kit Reduced engine speed Series 1, 2, 2A & 3 contributes to quieter more If you do not own a Roamerdrive (DA9015), you can buy a handy dipstick kit that will comfortable travel under enable you to check the oil level in your motorway conditions and transfer case by simply lifting out the centre reduces wear & tear seat. The kit consists of a dip-stick tube that DA9018 screws into the level plug and a replacement Transfer Case Sump Cover top cover with a filler plug. Fits models fitted with 230 type transfer case. Defender - up to 2007, Discovery 1 & Range Rover diesel. Billettransfer case sump oil coolers are designed to replace the flimsy sump covers supplied as standard equipment. These covers are stronger DA9029 than the originals and have cooling fins to keep the oil in your transfer case cool in harsh conditions. The sump cover is supplied with a new gasket, and the existing bolts are used for installation. The sump cover is significantly stronger than the original and adds about ½ litre to oil capacity. Existing ground clearance is not compromised. A plugged port is supplied so that DA1285 oil temperature gauge can be fitted. It is possible to fit this sump cover to V8 models but check first that there is good clearance between the cover and existing exhaust pipes. DA1285Oil Temperature Gauge This oil temperature gauge is a high precision mechanical temperature gauge with a full 270 degree sweep. The unit is designed to compliment DA9018 transfer case sump cover and fits directly to a pre-drilled port in the sump cover. The unit fits into a standard two inch mounting hole and operates completely independently of electrical power. A 12 volt light supplies illumination. The gauges are far more accurate than common electrical types using thermistor senders. These gauges can also be used to measure cooling water temperature or engine oil temperature in commercial or marine applications. The sending tube is 1,800mm long, and contains pressurised fluid so it cannot be shortened - but you can coil surplus tube behind your dash. Series DA9015 DA9015 Overdrive Unit The distinctive extra lever on the right hand side of the transmission tunnel on a Series 1, 2 or 3 shows that it is equipped with a Roamerdrive. Since 2002 the majority of new overdrives fitted to these timeless vehicles have been simple rugged units. Proven in hundreds of installations worldwide, this rugged and well engineered product will improve the performance and economy of your collectable Land Rover. The SS model Roamerdrive is an auxiliary gearbox that is easily fitted to a Series 1, 2 or 3 with a 4 or 6 cylinder engine. The unit adds an additional 28% to the ratio of the transmission giving improved fuel economy. Reduced engine speed contributes to quieter more comfortable travel at motorway speeds and extends the life of drive train components. The Roamerdrive is a completely mechanical device built in the same tradition of rugged dependability that has made Land Rover the world’s favourite expedition vehicle. These overdrives have no electronic or hydraulic components. They are engaged or disengaged by moving a convenient lever. Unlike a high ratio transfer case that will permanently detract from the versatility of the gearbox, the Roamerdrive does not affect the vehicle’s designed gear ratios. The unit provides useful ‘splitter’ gears such as a gear ratio midway between conventional third and fourth. The Roamerdrive uses the same epicyclical gear technology as a modern automatic transmission and is very quiet running. This is particularly evident at DA9015 higher speeds and makes driving a Series Land Rover for long distances a more pleasurable experience. Fuel savings will depend on your driving habits. On long journeys Roamerdrive users have reported fuel savings of up to 18%. DA9016 Transfer Case Sump Cover Fits all Land Rover Series 1, 2, 2A and 3 models (except V8) Billet transfer case sump oil coolers are designed to replace the flimsy sump covers supplied as standard equipment. These covers are stronger than the originals and have cooling fins to keep the oil in your transfer case cool in harsh conditions. This Series model is supplied with a new gasket and replacement fastening bolt to replace the brittle standard studs. Being solid aluminium, the cover completely eliminates leaks caused by differential expansion. If your vehicle is pre 1980 you can use your existing drain plug and washer. Owners of Later Series Vehicles with Metric fasteners should purchase a plug (Land Rover part 235592) to fit the threads in this casting. As the cover expands at the same rate as the aluminium transfer case the stubborn oil leaks associated with the original steel cover are completely eliminated. Photo by Sourav Mishra 160