Jeep Grand Cherokee

1993-1999 of release

Repair and car operation

Trailer towage

General information

Strictly adhere to the schedule of routine maintenance of the car (see. Head of Control and routine maintenance). Do not forget that when using vehicle many procedures should be made for trailer towage more often.

At all do not exceed norm of loading of the car. Except the maximum permissible load on bridges (GAWR), also such characteristics, as weight load of the hook-on device, and also mass of all luggage placed in the car and the additional equipment should be considered. Remember that any weight, placed on the trailer as a result conducts to increase of load of the car.

Do not forget that the violation of the rules of towage of the trailer can lead to the most serious consequences. Try to adhere stated below recommendations:

• Watch, that the center of gravity of the cargo placed in the trailer was displaced a little forward (so that it was the share of the hook-on device of the car near (10 ÷ 15) to % of full weight gross the trailer. Violation of this requirement usually leads to violation of course stability of a hitch at the expense of oscillatory lateral movings of the trailer during movement.
• Do not connect a hydraulic drive of brake mechanisms of the trailer to a brake contour of the car.
• The equipment of trailers in weight over 907 kg brakes is an indispensable condition of towage.
• Do not connect electroconducting of signal running lights of the trailer to the main plait of electroconducting of the car. Connection should be made with application of a standard plait for the equipment of hook-on devices. Violation of this requirement can lead to electric equipment failure, and also receiving serious traumas.
• Do not overload the car and/or the trailer over admissible norms is can lead to loss of control of management, decrease in efficiency of functioning of brakes, an overload of bridges, components of the transmission line, a steering, a suspension bracket and bearing body elements.
• Watch that the cargo placed in the trailer was reliably fixed.
• Use for the car equipment only firm hook-on devices which installation should be charged to specialists of dealer office of the Chrysler company.

Admissible weight characteristics of the trailer

Into full weight gross the trailer (GTW) enter weight actually the trailer, plus weight of the cargo placed in it and the hinged equipment. The most exact way of definition of GTW is the placement of completely loaded trailer on automobile scales.

Try, that 60 % of weight of cargo were the share of a forward part of the trailer that provides implementation of the requirement about that it was the share of the hook-on device about (10 ÷15) to GTW %.

At towage of trailers with load of the hook-on device over 160 kg or when GTW exceeds 1600 kg a hitch it should be equipped with the device twist - control and turnbuckle balancing.

Hook-on devices

Hook-on devices of the Class I are intended for towage of trailers with GTW on more than 907 kg. The device always can be got in dealer offices of the Chrysler company.

Devices of the Class III allow towage of trailers in weight gross (GTW) to 2 268 kg.

The car equipped with the hook-on device of the Class IV can be used for towage of trailers with GTW to 2 948 kg.

The weight loading falling on the hook-on device should make not less than 10 %, but no more than 15 % of GTW and not to exceed at all 340 kg.

Devices of the increased durability

Class III devices

As it was already mentioned above, hook-on devices of the Class III are intended for towage of trailers in weight gross GTW) no more than 2 268 kg. For successful towage of such trailers it is necessary to use only the models meeting the following requirements:

Class IV devices

These devices allow to make towage of trailers in weight to 2 948 kg. Should be established on the following models:

Councils on providing optimum operating conditions of system of cooling during trailer towage

In order to avoid overheats of the engine and transmission try to adhere to the following recommendations:

• During a stop in the conditions of a city cycle transfer transmission to neutral situation and lift engine turns.
• At movement on the highway speed should be slightly lower, than at car operation without the trailer.
  c) temporarily disconnect К/В.
• In time carry out procedures of service of system of cooling (see. Head of Control and routine maintenance).

In order to avoid a potential overheat of AT disconnect raising transfer (About/D OFF) at movement on the hilly district, or on the most intense sites transfer AT to situation 2. In order to avoid superfluous switchings of transmission move on lowered on one step передаче.15 At frequent towage of the trailer by the car equipped with AT (in particular in the mountain district or in hot weather originators of this Management recommend to make ATF change through each 24 000 km (15 000 miles) run and also to equip transmission by a maslookhladitel (if that is not established fabrichno).

The main requirements shown to the car at its use for towage of the trailer

1) Towing loading of the car should be lowered at the expense of weight load of a turnbuckle for the purpose of maintenance of load of the back bridge (GAWR) within 1 338 kg.
2) GCWR = Full combined mass of a hitch.
* Use of hook-on devices of Classes III and IV assumes application on the car of the special steering pump and the steering mechanism with heat resisting epiploons.