Nissan Patrol, Ford Maverick

1988-1997 of release

Repair and car operation

Transfer case

Carburetor models of 4.2 l and 3.0 l

All models are equipped with the transfer case ТХ12А established in a back part of transmission and allowing the driver to carry out a direct drive on forward wheels of the car in modes of raising or lowering transfers. The choice is carried out by means of the lever located on a wall of transmission and connected to a control lever of a transfer case by means of a rod of switching. For permission of functioning of the block of selection of capacity (RTO) (if that is provided) the lever of the selector can be transferred to the situation "N".

Assembly of a transfer case consists of forward, central and back cases and comprises rotating in roller bearings entrance, conducted and forward day off shaft. In order to avoid losses of greasing liquid cases are equipped with epiploons.

Components of a transfer case

1 — a driving chain 2 — the bearing 3 — a conducted shaft 4 — switching rods 5 — switching forks 6 — the holder 7 — an entrance shaft 8 — an intermediate shaft 9 — a forward target shaft

Rotation is transferred from a back part of a conducted shaft of a transmission on a shlitsa of an entrance shaft. The mode of raising transfer joins by shift of the sliding coupling equipped with shlitsa forward that leads to direct input in gearing of an entrance shaft with the conducted. Coupling shift deduces shaft from direct gearing back and carries out their joint through a gear wheel of lowering transfer. Thus rotation is transferred from an entrance shaft to a gear wheel of lowering transfer by means of an intermediate shaft. The intermediate shaft since both ends is equipped with podpruzhinenny gear rings for a choice люфта.

The drive on forward wheels is carried out by introduction in gearing of a driving asterisk and a gear wheel of coupling of a conducted shaft by means of internal шлицов couplings of the synchronizer, jointing synchronizer teeth with a coupling gear wheel. Synchronization is carried out at contact of a ring of the synchronizer to a cone on a wall of a gear wheel of coupling. Thus speeds of rotation of a driving asterisk and a gear wheel are compared and smoothness of switching is reached. The driving chain is used for rotation transfer from a driving asterisk on a forward target shaft.

Models of 4.2 l of EFI

The transfer case differs from considered above ТХ12А lack of a podpruzhinenny gear ring, a tarelchaty spring and a remote ring on the back end of an intermediate shaft. On release models since December, 1992 there is no also lock a ring and a remote ring on the forward end of an intermediate shaft (see an accompanying illustration) - the components eliminated from 10.91 are marked *, eliminated from 12.91 - #.

1 — a gear ring 1* — a gear ring 2 — a remote ring 2# — a remote ring 2* — a remote ring 3# — a lock ring	4 — the bearing 5 — a tarelchaty spring 5* — a tarelchaty spring 6 — an intermediate shaft 7 — an adjusting washer

Since August, 1995 were eliminated a pro-rate on the forward end of an entrance shaft and a remote ring near the central bearing of a conducted shaft.

Procedures of service of a transfer case are identical to all models.