The vacuum for the operation of the brake servo unit is supplied by a separate exhauster pump (vacuum pump).Ī five-speed manual or an automatic transmission can be fitted to the vehicles covered in this manual. Two types of Lucas calipers or Teves/ATE calipers were used during production and irrespective of the models in question will be covered in the relevant section. Disc brakes at the front wheels and rear wheels are fitted and a brake servo unit as standard fitment, make up the brake system, but not all models have the same front disc brake assemblies. The connection to the rear drive shafts takes place at the inside of each rear wheel hub carrier.Ī rack and pinion steering, fitted with servo-assistance, is used. The wheel hub carrier is bolted to the outside of the suspension arm. The suspension arms are rubber-mounted on the chassis. The rear suspension consists of suspension arms with coil springs and hydraulic shock absorbers and a stabiliser (antiroll) bar.

All parts of the front suspension are mounted to a strong crossmember, which can be removed as a complete unit in order to remove the individual units, if major repairs are necessary. The individual parts of the front suspension can be removed from the vehicle without dismantling the complete assembly. The front suspension consists of an upper and lower wishbones, torsion bars and a stabiliser bar (anti-roll bar), together with double-acting, hydraulic shock absorbers. A catalytic converter, exhaust gas recirculation, a turbo charger and a charge air intercooler are used in these vehicles. All engines operate with direct fuel injection (TDI engine). The latest engines have the code letters AXG, AXL and AYC. The engine performance is given in Section 1.0. August 1995 a new engine with a capacity of 2.5 litres has been fitted to T4 models, but the engine types have been changed since introduction. The engine has a performance of 55 kW at 3700 rpm ( AAB engine 57 kW at 3700 rpm.) The engine is of the conventional type with indirect diesel fuel injection.įrom approx. The 2.4 litre diesel engine is a five-cylinder engine and has now the type designation AJA, replacing the previously used AAB engine. Either a diesel or turbo diesel engine is fitted. Earlier engines of the same capacity were rated at 45 kW at the same speed. The engine has a performance of 50 kW at 3700 rpm. The 1.9 litre diesel engine is a four-cylinder engine and has the type designation ABL, replacing the engine type 1X. The following engines are covered in this manual: This Manual covers the models in the Volkswagen Transporter range from the end of 1999, generally referred to as Type T4 vehicles, with a choice of three diesel engines.

Vw transporter t4 manual pdf