Section 7. Maintenance Procedures
Belarus 80.1/80.2/82.1/82.2/82
Р — Operation and Service Manual
78
7.2. MAINTENANCE SERVICE SCHEDULES
Table 8
It
e
m
No
.
in
di
a
gra
m
Scope of operations performed
Maintenance intervals,
hr
Technical requirements
10
125
500 1000
Check and adjust, if required:
1
fan driving belt tension
Х
Belt sagging on «alternator pulley
-crankcase pulley» leg
— 15-22
mm, at 40 N (4 kgf) applied
2
inflation pressure of tyres and
tyre condition
х
Inflation pressure in tyres accord-
ing to values specified in Table 4.
3
clutch pedal free travel
х
40...50 mm against pedal pad
4
overall travel of service brake
pedals
х
70-90 mm (110-120 mm for trac-
tors with unitized cab, at 125 N
(12,5
кгс)
5
parking brake lever throw
х
Under 200 N (20 kgf) applied to
lever, the cog should move and
lock in 3
rd
or 4
th
tooth space of the
sector
6
steering wheel backlash
х
Up to 25°, max., with the diesel-
engine running
7
air pressure and pressure drop in
the pneumatic system
х
6,5-8,0 kgf/cm
2
(0,65-0,80 MPa);
pressure drop not more than 2,0
кг/см
2
(0,2 MPa) in 30 min.
8
front wheel toe-in
Х
0-8 mm;
9
valve-to-rock arm clearances
х
0,25
+0,05
mm on a cold diesel-
engine, for
впускных и выпуск-
ных клапанов
10
cylinder head bolts tightening,
with further adjustment of valve-
to-rock arm clearances
х
Tightening torque of 19 to 21
kgf
•m (190-210 N•m). Tightening
pattern, refer to Fig. 36.
11
rear P.T.O. shaft planetary re-
ducing gear control mechanism
х
When shifting, the effort at the
control lever should be 12-15 kgf
(120-150 N); shifting from disen-
gaged to engaged position should
be positive.
12
steering rod joints
Х
No gaps can be admitted in joints.
13
FDA planetary-and-spur reduc-
ing gear bearings
х
Knuckle turning effort as applied
to wheel attachment bracket
should be within 6...8 kgf.
14
tightening of intermediate bear-
ing safety clutch nut
х
Clutch should transfer a torque of
40-80 kgf
•m (400-800 N•m).
