Nissan Patrol, Ford Maverick

1988-1997 of release

Repair and car operation

Forward and back bridges, running gear and steering

Peredny Bridge and suspension bracket

General information

Peredny Bridge is equipped with a banjo type case in which gipoidny assembly of the main transfer and completely unloaded power shafts is located. Differential assembly on models with type bodies Hardtop (Hardtop) and the Versatile person (Station Wagon) contains two satellites in an integral box, on models with bodies such as Utilitya (Van) (Utility) and the Mini-truck (Cab Chassis) is applied 4-саттелитный differential with a box consisting of two half.

Components of assembly of lobbies of the bridge and suspension bracket (and accompanying them) models Hardtop and the Versatile person

The transfer number of the main transfer of all models makes 4.111:1 exception make the Patrol ST and Ti models with manual transmission, models of 3.0 l and Maverick XL. The transfer number of models of 3.0 l makes 4.375:1, and the ST models, XL and Ti - 3.900:1.

Assembly of a conducted gear wheel of the main transfer with differential is established in two konusny roller bearings, and radial люфт and a pretightness are regulated by means of special nuts.

The leading gear wheel is established also in two konusny roller bearings which pretightness is defined by selection of the adjusting washer of the demanded thickness established between them. Depth of landing of a leading gear wheel is corrected by selection of the adjusting washer established between a gear wheel and a cone of the internal bearing.

Power shafts since the external ends are equipped with not folding hinges of equal angular speeds Birfild's (CV JOINT). In case of failure the CV JOINT is replaced assembled with a power shaft. The external end of a power shaft is established in the needle roller bearing concluded to a rotary pin. The axial emphasis is carried out by means of the brass washer established between the CV JOINT and a rotary pin, and adjustment axial люфта is made by selection of a fixing lock ring of the demanded thickness.

The rotary fist is established on a pin of a case of the bridge in two conic roller bearings. The pretightness is carried out by selection of bearings established between covers and a fist of adjusting washers of the demanded thickness. Power shafts transfer the rotation to naves of forward wheels by means of a being disconnected drive.

Being disconnected drive allow to make a detachment of power shafts from naves of wheels when there is no need for use of an all-wheel drive mode. All models, except for Nissan Patrol Ti, are equipped with naves with manual shutdown of a drive. Shutdown is made by rotation of the selector handle. In blocked (LOCK) situation frictional шестеренчатая assembly of a being disconnected drive is entered into gearing with a gear wheel of coupling which шлицов is connected by means from the end of a power shaft.

The Nissan Patrol Ti models are equipped with an automatic drive of shutdown of naves of forward wheels. Shutdown can be also duplicated and manually by means of a wrench. In the situation LOCK the automatic drive functions also as well as manual. In the situation AUTO at the chosen 4WD mode rotation of a power shaft causes cam lifting in stupichny assembly up on directing on internal brake assembly. Thus there is a shift of the sliding gear wheel equipped with shlitsa on a power shaft and its introduction in gearing to the leading gear wheel located in stupichny assembly. Car movement in an opposite direction causes an instant conclusion of a drive from gearing till cam lifting on the opposite directing.

At refusal of operation of a being disconnected drive it is necessary to replace it assembled. However, it is necessary to notice that the drive with manual switching can be partially disassembled for the purpose of performance of procedures of regular service, besides, the gear wheel of coupling belongs to replaceable details.

For maintenance of greasing of components of the forward bridge at demanded level, it is necessary to carry out monthly car run on distance not less than 16 km with the drive of naves of forward wheels included in the provision LOCK.
The forward suspension bracket can be executed both on springs, and on screw springs.

In the first case the leading forward bridge of the car is suspended on semi-elliptic sheet springs (springs) and equipped with shock-absorbers of bilateral action. Springs are established on rubber pillows, their forward party is fixed by earring means, back - an anchor finger.

Shock-absorbers are established also on rubber pillows. From below the shock-absorber fastens to a basic plate of a step-ladder of a spring while its top part is attached to a frame of the chassis of the car.

Components of a forward suspension bracket of spring type

Peredny Bridge leans on springs and is fixed on them by the central bolt. Fastening of the bridge is carried out by means of U-shaped bolts of step-ladders.

The stabilizer of cross-section stability is fixed on a case of the forward bridge by means of two basic arms equipped with rezinometallichesky plugs while its external ends fasten by means of racks and rubber plugs to chassis arms.

In case of a spring suspension bracket the leading forward bridge is hung out by means of longitudinal levers and a cross-section jet bar. The long course of screw springs is supervised by hydraulic shock-absorbers of bilateral action. On some models the stabilizer of cross-section stability connects longitudinal levers of a suspension bracket to the car chassis, facilitating driving at the expense of restriction of process of rocking of a body during movement. The role of axial support of components is carried out by rubber plugs not needing service that essentially reduces level of noise published by a suspension bracket. In the top part of support of screw springs rubber limiters of a course the compression preventing direct contact of metal components at complete compression of springs are established.

The damper of a steering drive can be fixed both on a cross-section jet bar of a suspension bracket, and on a chassis frame (see an accompanying illustration).

The suspension bracket design on the screw springs, established as an additional complete set on model of 4.2 l of EFI with bodies such as Utilitya (Van) and the Mini-truck of late years of release (since 1992), is similar that for models Hardtop and the Versatile person. The order of all described below procedures remains invariable, behind that exception that the effort of a tightening of a nut of fastening of a cross-section jet bar to a case of the forward bridge on release models since October, 1994 makes 91 ÷ 121 Nanometers.