Jeep Grand Cherokee

1993-1999 of release

Repair and car operation

Procedure and order of a tightening of carving connections

The tightening of the most part of carving connections should be made with the efforts defined by requirements of Specifications, given in the beginning of each Chapter of this Management (it is necessary to understand as effort of a tightening of fixture enclosed to it at a tightening a torque). Below the effort of a tightening will be called also as the moment of an inhaling of fixture. The tightening with excessive effort can lead to violation of integrity of fixture whereas the nedotyagivaniye conducts it to unreliability of connection of interfaced components. Bolts, screws and hairpins, depending on a material of which they are made also diameter of a carving part, usually have strictly certain admissible moments of an inhaling, many of which as it was already mentioned above, are provided in Specifications at the beginning of each Chapter. Strictly adhere to the provided recommendations about the moments of an inhaling of fixture applied on the car. For a tightening of the fixture which has not been mentioned in Specifications it is necessary to use the card of the admissible moments of rotation given below. The values given in the table are focused on fixture of classes of durability 2 and 3 (more high-class fixture allows a tightening with big effort), besides, it is meant that the tightening dry (with an ungreased carving) fixture in steel or cast (not aluminum) a detail is made.

Any fixture located on a perimeter detail (such as bolts of a head of cylinders, the pallet of a case and various covers), in order to avoid deformation of a detail should be given and be tightened in strictly certain order. The order of a tightening and an otdavaniye of such fixture is given in the corresponding Heads of the Management. If the special order is not stipulated, in order to avoid a curvature of a component it is necessary to adhere described below procedure.

At the first stage all bolts or nuts should be tightened by hand. Further, each of them should be in turn held on on one complete revolution, and transition of odes of one bolt/nut to another should be carried out in a diagonal order (cross-wise). Further, having returned to the first to a bolt/nut, it is necessary to repeat procedure in the same order, tightening fixture for a half of turn. Continue to act in the same manner, tightening everyone a bolt/nut this time already on a turn quarter for one approach until all of them will not appear tightened with demanded effort. At a fixture otdavaniye as it is necessary to adhere to the described procedure, but operating upside-down.