Manual transmission: 1 - axle gear shank; 2 - speed sensor; 3 - clutch housing; 4 - primary shaft; 5 - clutch release bearing; 6 - clutch release fork; 7 - clutch release cable sheath stop; 8 - back cover; 9 - gearbox housing; 10 - oil filler plug; 11 - oil drain plug; 12 - gear shift mechanism; 13 - differential right axle gear tailstock seal
Figure 4.14. Sectional view of a manual gearbox
The identification number plate (1) is located on the gearbox housing, see figure.
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Gearbox identification data: 1 - gearbox type; 2 - gearbox modification; 3 - gearbox serial number; 4 - manufacturer's code
The JB1 model has a five-speed manual transmission, all forward gears are synchronized. The main gear and differential mechanism are integrated into the transmission.
Gearbox specification:
- Filling capacity - 3.4 liters
- Oil level - up to the filler hole edge
- Transmission oil type - TRX 75W, 80W
Single use details:
- Seals.
- Rubber sealing rings.
- Thrust bearing guides.
- Nuts for fastening the primary and secondary shafts.
- Speedometer drive shaft and gear.
- Guide pins.
Table. Gear ratios
| Engine | Differential | Speedometer drive | Broadcast | Reverse | ||||
| 1st | 2nd | 3rd | 4th | 5th | ||||
| K4J | 15/61 | 21/19 | 11/37 | 22/41 | 28/37 | 34/35 | 39/31 | 11/39 |
| K7J | 14/63 | 21/19 | 11/41 | 21/43 | 28/37 | 30/29 | 41/31 | 11/39 |
Table. Lubricants, sealants and adhesives
| Name | Purpose |
| MOLYKOTE BR2 | Lubrication of sun gear splines. Lubrication of clutch components. |
| LOCTITE 518 | Gearbox housing seal |
| RHODORSEAL 5661 | Sealing of plugs and switches. Sealing of bearing caps. |
| LOCTITE FRENBLOC | Fixing the nuts of the primary and secondary shafts. Fixing the 5th gear hub. Fixing the differential locking drive studs. |
Gearbox housings and covers
Gearbox gears. 1 - Oil deflector, 2 - Roller bearing, 3 - Roller, 4 - Roller spring, 5 - 1st gear pinion, 6 - Secondary shaft, 7 - Slotted washer, 8 - 2nd gear pinion, 9 - Retaining ring, 10 - 3rd and 4th gear hub and sliding sleeve, 11 - Washer, 12 - 5th gear pinion retaining ring, 13 - Flange washer, 14 - Lock bolt and washer, 15 - 5th gear pinion tip located on secondary shaft, 16 - Thrust washer, 17 - 5th gear pinion (secondary shaft), 18 - Ball bearing, 19 - Primary shaft, 20 - Retaining ring, 21 - Washer, 22 - 4th gear pinion, 23 - Synchronizer locking ring, 24 - 3rd gear pinion, 25 - Reverse gear with axle assembly, 26 - 1st gear pinion, 27 - 5th gear pinion nut, 28 - 5th gear hub and sliding sleeve, 29 - 5th gear pinion sleeve, 30 - 5th gear pinion (primary shaft), 31 - Needle bearing, 32 - 5th gear bushing, 33 - Washer.
Differential made on ball bearings. 1 - Thrust washer, 2 - Spring, 3 - Speedometer sensor toothed ring, 4 - Satellite washers, 5 - Satellites, 6 - Half-shaft gear with shank, 7 - Satellite shaft, 8 - Elastic pin, 9 - Half-shaft gear of three-pin joint, 10 - Gasket thickness, 11 - Spring snap ring, 12 - Spacer sleeve, 13 - Differential, 14 - Spring washer, 15 - Ball bearing, 16 - Speedometer drive pinion, 17 - Bearing snap ring, 18 - Ball bearing, 19 - Half-shaft gear snap ring with shank, 20 - Sealing cuff, 21 - Sealing ring.
You can find the original at this link: renaultbook.ru
Differential made on roller bearings. 1 - Differential, 2 - Half-axle pinion with tailpiece, 3 - Satellite washers, 4 - Satellites, 5 - Spacer sleeve, 6 - Elastic pin, 7 - Half-axle pinion of three-pin joint, 8 - Gasket thickness, 9 - Spring snap ring, 10 - Satellite shaft, 11 - Tapered bearing, 12 - Speedometer drive pinion, 13 - Tapered bearing, 14 - Adjusting washer, 15 - Differential nut, 16 - Sealing cuff, 17 - Sealing ring.
Gear shift mechanism. 1 - Sealing sleeve, 2 - Gear shift lever, 3 - 1st and 2nd gear, 3rd and 4th gear rod lock cracker, 4 - Shift fork, 5 - 1st and 2nd gear rod lock cracker, 6 - 1st and 2nd gear and reverse gear rod lock pin, 7 - 1st and 2nd gear rod, 8 - 3rd and 4th gear rod shift fork, 9 - 3rd and 4th gear rod, 10 - 5th gear rod (five-speed gearbox), 11 - 5th gear engagement fork (five-speed gearbox), 12 - U-shaped holder of the reverse gear lock, 13 - 5th gear stop (five-speed gearbox), 14 - 5th gear stop adjusting washer, 15 - 5th gear stop (five-speed gearbox), 16 - Threaded stop, 17 - 5th gear rod lock cracker (five-speed gearbox), 18 - Retaining ring, 19 - Rod support, 20 - Primary shaft, 21 - Rod.
The gearbox is installed in the engine compartment transversely to the longitudinal axis of the engine and is attached to it with bolts. The advantage of this arrangement is that it provides the shortest possible (from possible) transmission paths to the front wheels. In addition, this allows for optimized cooling due to the fact that the gearbox is located in the air flow moving through the engine compartment.
The torque from the crankshaft is transmitted through the clutch to the input shaft of the gearbox.
Manual transmission control drive: 1 - gearbox control drive rod mounting clamp; 2 - gearbox control drive rod; 3 - gearbox control lever; 4, 6 - nuts; 5 - gearbox control lever linkage; 7 - washer
The gear shift drive is designed to allow the driver to control the gearbox from inside the vehicle.
The gear selection is performed by means of a gearshift lever mounted on the floor of the passenger compartment, which is connected to the gearbox by a gear engagement rod. The rod actuates a series of forks located inside the gearbox, which are mounted in the cutouts of the sliding synchronizer clutches. The clutches are locked on the gearbox shafts, but can slide along them in the axial direction due to the presence of ground hubs that press against the locking rings, bringing them into contact with the corresponding gears. The conical surface of the locking ring and gear plays the role of a friction clutch, which gradually equalizes the speed of the sliding synchronizer clutch (and, therefore, the gearbox shaft) and the gear speed. The locking pin, which enters the shaped cutout of the locking ring, prevents the synchronizer clutch ring from engaging with the gear until their speeds become equal. This ensures smooth gear shifting and reduces noise and wear caused by rapid gear changes. Torque is transmitted to the driven gear of the main gear, which transmits rotation through the planetary gear satellites to the differential gears and drive shafts. The rotation of the satellites on their axes allows the inner wheel of the car to rotate at a lower speed than the outer one when turning. The main gear and differential are installed in the same housing in such a way that disassembling one unit inevitably leads to disruption of the other unit. Adjustment and repair of the main gear require the use of a number of special tools and devices.