Gearbox disassembly
Clean the gearbox, drain the oil from the gearbox crankcase and install it on a stand for disassembly.
Loosen the mounting bolts and remove the rear cover of the gearbox, remove the adjusting ring of the rear bearing of the secondary hall and the sealing gasket.
Move with care. 3rd and 4th shift fork shaft in the direction of 3rd gear until the lock is released. Remove the lock, then set the fork stem to the neutral position.
Warning. Pull the 3rd and 4th shift fork rod only to the required amount so that the synchronizer crackers do not fall out. When they fall out, the fork stem will not be able to be set to the neutral position without removing the nut from the end of the secondary shaft.
Engage reverse and 1st gear to block the input and output shafts, and unscrew the nut from the end of the output shaft.
Install the mounting cross to the clutch housing.
Screw the bolt all the way into the input shaft shank.
Remove the circlip and thrust washer from the input shaft
Press the input shaft ball bearing out of the clutch housing.
Remove the gearbox housing together with the shafts and knock out the dowel pins.
Clamp the gearbox housing with shafts in a vise with soft metal linings.
Knock out the spring cotter pin from the shift fork of III and IV gears. while holding the fork stem with a hammer in order to damage the hole for the fork stem in the wall.
Pull out the 3rd and 4th gear shift fork shaft. so that the fork of III and IV gears can be removed. Then move the fork rod to the neutral position.
Remove input shaft from gearbox housing.
Knock out the axle and remove the reverse idler gear.
Knock out the spring pin from the leash of the 1st and 2nd gear shift fork rod using a drift and remove the leash from the fork rod.
Press the output shaft out of the gearbox housing.
Warning. When you press the secondary shaft, make sure that the fork of 1st and 2nd gears is not blocked. If it is stuck, lightly tap the fork to release it.
Loosen the differential output shaft mounting bolts, holding the shaft with a mandrel.
Loosen the differential cover bolts.
Remove the differential cover using two mounting blades.
Remove differential.
Details of the four-speed gearbox housing: 1 - clutch housing; 2 - plug; 3 - breather; 4 - filler plug; 5 - drain plug; 6 - mounting pin; 7, 12 - sleeve; 8 - bottom cover of the clutch housing; 9 - gearbox housing; 10 - washer; 11 - bottom cover bolt; 13 - cork; 14 - gearbox cover; 15 - gasket; 16 - cork; 17 — a lining of a cover of a transmission; 18 - output shaft bearing; 19 - ring; 21 - hairpin; 22 — a hairpin of a cover of a box of differential; 23 - washer; 24 - nut; 25 - pin; 26 - hairpin.
Details of the four-speed gearbox: 1 - input shaft; 2 — a gear wheel of the III transfer; 3 - gear IV gear; 4 - clip; 5 - stuffing box; 6, 15, 24, 30 - needle bearings; 7, 16 - bearings; 8 - adjusting washer; 9, 36 - pins; 10, 18 - locking ring; 11 - sliding clutch of the synchronizer of III and IV gears; 12, 27 - synchronizer springs; 13, 29 - crackers; 14, 26 - blocking rings of synchronizers; 17 - lock washer; 19 - secondary shaft; 20, 41 - bearing with locking pin; 21 - gear IV gear; 22 - gear III gear; 23 - adjusting ring; 25 - gear wheel II gear; 31 - gear 1st gear; 32 - adjusting ring; 33 - thrust ring; 34 - rear bearing of the secondary shaft; 35, 40 - nuts; 37 — an axis of an intermediate gear wheel of a backing; 38 - intermediate reverse gear; 39 - bushing of the reverse axis; 41 - bearing fixing pin; 42 - speedometer drive; 43 - speedometer drive gear; 44, 45 - differential box cover with gasket; 46 - ring; 47 - drive gear of the speedometer drive; 48 - adjusting ring; 49 - the outer ring of the bearing of the differential box; 52 - the inner ring of the bearing; 51 — differential box; 52 - the axis of the satellites; 53 - driven gear of the main gear; 54 - stuffing box; 55 - differential output shaft; 56 - thrust washers; 57 - satellites; 58 - differential gears.
Visitor comments