MTZ 1220.1, Operator'S Manual

Page: 19 / 244

MTZ 1220.1/1220.3 Section С . Technical data
C7
Differential lock: Oil-actuated friction
clutch
Brakes
Service Brakes: on rear wheels: two-
disk or three-disk, dry with mechanical
servo drive. Disk diameter: 204 mm (or
eight-disk, operating in oil sump (op-
tion)
Parking brake: On rear wheels through
differential lock on final drives and rear-
axle drives. Dry-disk type with mechan-
ical hand control. Disk diameter: 180
mm (or 4-disk, operating in oil sump
(option))
Front driving axle
Type: two-point, beam-type
Main gear type: bevel gears with spiral
tooth.
Differential type: self-locking, exces-
sive friction
Final gears type: planetary
Drive gear type: built in GB single pa-
rallel-shaft reduction gear unit with hy-
draulically operated multiplate clutch;
cardan shaft.
Hydraulic distributor of FDA control:
hydraulically operated, spool-type, elec-
trically controlled
PTO drive
Type: independent, two-speed and
synchronous
Drive clutch: Planetary reduction gear
with band brakes
Drive: electrohydraulic
PTO end speed:
Independent drive
I — 540 rpm; N=60 kW,
II — 1000 rpm; N=90 kW.
Synchronous drive
4,18 rev/meter of travel when fitted with
tires 18,4R38.
PTO shaft end extension: SAE stan-
dard 6-spline for 540 rpm and 21-spline
for 1000 rpm.
Rotation: Clockwise
Steering
Type: hydrostatic (H.S.).
Feed pump: NSH14, gear-type, left-
handed rotation.
Volume constant — 14 с m
3
/rev.
Metering pump type — gerotor type
Volume constant – 160 с m
3
/rev.
Relief valve pressure— 14
М
Pa (140
kgf/ с m
2
).
Antishock valves pressure — 20 М Pa
(200 kgf/ с m
2
).
Actuating mechanism: one hydraulic
bilateral cylinders.
Bore — 63 mm,
Cylinder stroke— 200 mm
Steering wheel range of adjustment:
•
in angle of slope - from 25
°
to 40
°
with fixation in four positions,
•
in height – along steering shaft axle,
stepless 100 ±200 mm
Backlash in the steering wheel –
max. 25
°
, when feed pump is in opera-
tion
Hydraulic lift linkage (HLL)
Type: unit-principle with hydraulic lift
device (with two plunger cylinders) It