Fig. 3.77. Removing the assembly "ring, hub and third gear"
Using a press, remove the assembly "ring, hub and third gear pinion". While doing this, lean on the teeth of the third gear pinion clutch (Fig. 3.77).
Fig. 3.78. Removing the assembly "1st and 2nd gear bushings and pinions, hub, toothed clutch"
Using a press, remove the assembly "1st and 2nd gear bushings and pinions, hub, toothed clutch". Lean on the first gear pinion (Fig. 3.78).
Checking the details
The teeth of the gears and couplings must not be too worn and must not have any nicks.
Also, make sure that there are no signs of friction or excessive wear on the shaft surfaces and the inner surfaces of the gears.
It is recommended to mark the position of the gear couplings relative to the hubs.
Installing a group of gears
For assembly, it is necessary to use a heating plate with a mode of 150°C.
Fig. 3.79. Heating the bushings
Place the new bushings on a cold heating plate. Warm them up for 15 minutes with the thermostat set to 150°C (Fig. 3.79).
Installation of bushings
Remove the bushing from the heating plate with pliers and install it on the shaft using a bushing with an internal diameter of 33 mm. Push it until it rests against the hub.
Fig. 3.80. Alignment of synchronizer ring projections with hub and gear grooves
Note: The 1/2 gear synchronizer is a double cone type; align the projections of the synchronizer rings with the grooves of the hubs and gears (Fig. 3.80).