General view of the manual transmission
716.6 belongs to the class of fully synchronized 2-shaft 6-speed gearboxes with one reverse gear, which are widely used in rear-wheel drive cars (both petrol and diesel).
There are four versions of 6-speed gearboxes, designed for torque from 250 to 400 Nm.
6-speed manual transmission 716.6
1 - Gearbox input shaft; 2 - Synchronizing ring 5/6 gears; 3 - Shaft; 4 - Reverse bearing insert; 5 - Switching cam; 6 - Axis of inclusion; 7 - Flange of connection with cardan shaft
Elements of the manual transmission
1 - Input shaft; 2 - Main shaft; 3 - Intermediate shaft; 4 - Front crankcase; 5 - Rear crankcase; 6 - clutch release device; 7 - Multi-cone switching synchronizer 1/2; 8 - Multi-cone switching synchronizer 3/4; 9 - Gear 1st gear; 10 - Gear 2nd gear; 11 - Gear 3rd gear; 12 - Gear 4th gear; 13 - Gear wheel of the 5th gear; 14 - Gear 6th gear; 15 - Reverse gear; 16 - Central switching rod; 17 - Internal switching module; 18 - Intermediate reverse gear
Proper use of 6th gear allows you to achieve significant savings in fuel consumption by reducing the operating speed of the engine. Due to the design features.
6-speed gearboxes are heavier than 5-speed ones.
The box receives torque from the engine through a conventional dry-type clutch equipped with an automatic wear compensator. The gearbox has a sealed design and is filled with a transmission oil that does not need to be replaced.
The accuracy and ease of short-stroke transmission shifts is achieved by the following design features:
- Rod-cable version of the switching drive;
- The use of a central shift rod fixed in needle bearings;
- The use of multi-cone synchronizers for switching 1st, 2nd, 3rd and 4th gears;
- Full synchronous reverse gear.
Gear assemblies with shafts are placed between two bearing planes. The third bearing plane used in earlier 5-speed gearboxes has been eliminated in this design.
The two-section split crankcase is made of light alloy and sealed with a special liquid compound.
input shaft (1) fixed in the flywheel by means of a guide bearing, and in the transmission case by means of a deep groove ball bearing. Main (2) and input (1) the shafts are articulated with each other in the common plane of the transmission housing and secured by deep groove ball bearings.
intermediate shaft (3) It has a lightweight hollow design and is mounted in a roller clutch and a deep groove ball bearing.
Due to the minimum manufacturing tolerances of half-crankcases and gears, as well as due to the use of roller clutches, the need for adjusting the axial play of the shafts is eliminated.
The movements of the gear lever are transmitted through the rods to the box. The box can be removed without removing the engine. It is necessary to remove the box when removing the clutch, when replacing the box or repairing it. It is not recommended to repair the box at home. Manual transmission control is described in Chapter Manual.