
70
The indicator flashes when low speed is switched on. When switching on neutral, the indi-
cator with
symbol flashes. When releasing the button, solenoid valves switch off, and the actu-
ated gear is maintained with spring ball clamper13 (see figure 51).
Neutral is switched on, when both solenoid valves “B” and “C” are actuated (see figure 52)
and neutral piston 9 moves (see figure 51) against stop to the bushing rim 7, and piston 22 moves
against stop of piston 10 to the neutral piston 9. Low speed is switched on when the piston 10
moves against stop to the part 25. High speed is switched on when the piston 22 moves against
stop of the piston 10 to the neutral piston 9.
On the trucks equipped with the additional power takeoff neutral speed is switched on after
switching on the power takeoff only. For that press the clutch pedal on a stopped truck before
switching on and wait for 5 seconds until the transfer box main shaft is stopped, press the button
of the additional power takeoff, move the transfer box gears switch to neutral position. For the
neutral to be switched on, press the transfer box switch button and hold it for 5...7 seconds until
the indicator
slashes. The additional power takeoff is switched off only after the transfer box
gear shift to high or low speed.
If there is no pressure in the truck pneumatic system, the previous transfer box gear is con-
stantly switched on, and the differential is unlocked. When high speed is switched on, neutral of
low speed can be actuated by rotating the bolt 5 (see figure 51) counter-clockwise. The bushing
installed in the lid, moving slidingly, sets neutral in the transfer box defined by rotating the cou-
pling shaft manually, when the gearbox control lever is in neutral position. If continue rotating the
bolt, low speed is switched on. The differential is locked in the same way by rotating the bolt 57.
When pressing the switch in the driver's cab (the transfer box control panel, see figures 25
and 32) of the transfer box differential lock with «
» symbol, solenoid valve A is actuated; of
power takeoff with «
» symbol, solenoid valve E is actuated; of the additional power takeoff
with «
» symbol, solenoid valve E is actuated; of the cross-axle differential lock with «
»
symbol, solenoid valve G is actuated. The solenoid valves supply air to the transfer box differen-
tial lock mechanism, the additional power takeoff, the power takeoff, the intermediate and rear
axle mechanisms, herein indicators flash on, and they are switched.
When disassembling clean all the parts of electric and pneumatic control from dust and dirt,
wash them in kerosene. Wear work faces of gear switch mechanism, the transfer box differential
lock, the additional power takeoff and power takeoff, the cross-axle differential lock mechanism
oil with ЦИАТИМ-201 lubricant before assembling, fill in the internals of the seals with the same
lubricant. Seal all cone threads with АН-8К TS 6-02-6-88, АН-17М TS 6-01-2-728-86 or LOC-
TITE 577, oil sealing discs with КЛТ-75ТМ TS 2513-069-00151963-2000.
Pay special attention to air tightness of connecting tubes and flexible hoses during operation
and when assembling the control system. Place of strong leakage is audible; weak leakage is de-
tected with soapy emulsion. Air leakage is not allowed.
Содержание 4320M
Страница 1: ...URAL 4320М TRUCK and its Modifications ...
Страница 34: ...33 Figure 17 Truck Ural 43206 0551 71 Figure 18 Truck Ural 43206 3111 79 Figure 19 Truck Ural 43206 3511 79 ...
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Страница 159: ...156 Figure 123 Engine Electronic Control Unit Wiring Scheme ...
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Страница 177: ...Figure 140 Installation of left and right side safety devices 171 ...
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