gf3330p1002a

Basic function of front axle differential

Typ gf · téma 33.30 · verze 0101 · 2020-07-07

Platí pro: Model all with transmission 725.0/1 with code M005 (Vehicles with 4MATIC/all-wheel drive)

Není k dispozici v jazyce „cs“; zobrazeno v jazyce Angličtina.

Zařazení

Funkční skupina 2 Podvozek › 33 Přední náprava › 33.30 Pohon, mezinápravový diferenciál, hnací hřídel — Řada 900 (modely 9**) · Řada 902 (modely 9**) · Řada 904 (modely 918, 919, 924, 925, 938, 943, 957) · Řada 906 (modely 917, 918, 924, 953)

Platí také pro motory/převodovky: 139 ***, 254 ***, 256 ***, 272 ***, 276 ***, 282 ***, 457 9**, 541 9**, 542 9**, 608 ***, 700 4**, 700 420, 700 421, 700 422, 700 423, 715 3**, 715 5**, 722 6**, 722 9**, 724 ***, 724 0**, 724 033, 724 044, 724 045, 724 1**, 724 103, 724 114, 724 115, 724 120, 725 ***, 725 0**, 725 035, 725 037, 725 038, 725 085, 725 1**, 739 390, 739 391, 739 395, 739 396, 739 397, 739 398, 739 399, 740 698, 743 3**, 743 4**, 743 498, 746 971, 924 9**, 924 910, 925 9**, 926 9**

GF33.30-P-1002A

Basic function of front axle differential

22.06.2020

Model

all with transmission 725.0/1

with code M005 (Vehicles with 4MATIC/all-wheel drive)

Overview

This document contains information on:

General

Function requirements

Function

General

The front axle differential distributes the torque provided by the transfer case to the left and right front drive wheels.

Function requirements

Drive train operational

Engine in operation

ESP® activated

Function

Basic function of front axle differential

Example illustration of front axle differential

1

Front axle differential carrier

2

Intermediate shaft (for left front axle shaft)

3

Ring gear

4

Differential

5

Right front axle shaft

6

Drive pinion

7

Propeller shaft flange

P33.30-2195-76

The front axle differential distributes the torque from the automatic transmission to the drive wheels of front axle. At the same time, the front axle differential is necessary to compensate for rpm differences, e.g. between the inner wheel and the outer wheel when cornering.

When driving straight ahead, the differential cage is driven via the drive pinion and crown gear. The differential cage carries the center bolt with the differential pinions mounted on it.

The differential side gears are located inside the differential cage. The differential side gears are interference fit with the front axle shafts. Between the differential side gears, the differential pinions are pivoted on the center bolt. The center bolt forms the connection between the differential housing and the differential pinions.

The differential cage is mounted in the front-axle housing with angular contact bearings in an X arrangement.

In the differential pinions for heavy-duty operations, a differential spider with four differential pinions is installed between the differential side gears instead of the center bolt.

The front axle transmission is designed as a single-speed differential with fuel-efficient technology (fuel economy). The housing of the front axle differential is bolted to the oil pan via a carrier (1). The drive pinion (6) is at an angle of 83°☐ to the crown gear (3) so as to compensate for the angled path of the propeller shaft to the front axle differential. The ring gear (3) is attached on the engine side and bolted to the differential cage of the differential (4). This location of components of the front axle transmission causes the change in direction of rotation, which occurs due to the single-speed output in the transfer case, to reverse again.