Belarus 1523, Operating Manual

Page: 87 / 312

BELARUS-1523/1523 В /1523.3 /1523В.3 Construction and Operation
82
Gearbox Control Mechanism
The mechanism of gearbox control con-
sists of a gearshift mechanism, together
with synchronizers, and a range-
selection mechanism. The gearshift
mechanism is mounted in the cover (9)
and in the fork box (13) (see Figure
“Gearbox (16F+8R)”). The cover (9)
houses the fork (16a), lever (11a), dog
(19) and lever (8a); the latter is fixed on
the dog (19) by means of bolt and key.
The fork box (13) (see Figure “Gearbox
(16F+8R)”) houses the dogs (12, 16) with
the forks (10) fixed thereto. The locking
balls (17) are provided for preventing the
simultaneous engagement of two ranges.
The range selection mechanism consists
of a fork (16), lever (11), dog (20) and
levers (8), installed in the gearbox cover
(9) as well as other parts installed in the
gearbox housing. The toothed couplings
(22, 53, 34) (see Figure “Gearbox
(16F+8R)”) are displaced by forks fixed
on dogs (fork (78), other parts are not
shown). The toothed couplings (22, 53,
34) (see Figure “Gearbox (16F+8R)”) are
locked in the neutral and engaged posi-
tions by means of the parts (6, 7а, 11).
The locking balls (6) (see Figure “Engine
Start Interlock”) are installed in the holes
in the gearbox housing for preventing the
simultaneous engagement of the toothed
couplings (34) and (53) (see Figure
“Gearbox (16F+8R)”).
Attention! To throw in gear, shift the
shifter lever smoothly (without sharp
jerks) in accordance with the shift pat-
tern diagram; then keep the lever un-
der slight pressure until the gear is en-
gaged in full.
1 – limiter; 2 – key; 3 – ball; 4 – nut; 5 – bolt; 6 – spring; 7 – bushing; 8, 8a – lever; 9 – cover; 10 – hous-
ing; 11, 11a – lever; 12 – pin; 13 – spring; 14 – sphere; 15 – boot; 16, 16a – fork; 17 – cover; 18 – pin; 19,
20 – dogs; 21 – link.