Tractor T-15.01

Engine YaMZ-238 ND4-1

Eight-cylinder V-shaped (camber angle 90°) four-stroke liquid-cooled diesel engine with turbocharging and air-to-air charge air cooling YaMZ-238 ND4-1 Yaroslavl Motor Plant.

Technical characteristics of YaMZ-238 ND4-1
Cylinder diameter and piston stroke, mm	130 x 140
engine's type	4 stroke
Cylinder arrangement	V8
Engine displacement, l	14,86
Fuel injection	Direct
Cooling	Liquid
Power, kW (hp)	173 (235)
Crankshaft rotation speed, min−1	1700
Maximum torque, N•m (kgf•m)	1108 (113)
Engine speed at max. torque, min−1	1100-1400
Minimum specific fuel consumption, g/kW•h (G/hp•h)	220(162)
Overall dimensions, mm (length x width x height)	1345 x 1045 x 1070
Weight, kg	1135
Generator, model	5702.3701-30
injection pump	805.1111007-40

Tractor engine T-1501

The tractor can be equipped with 2 different engines: YaMZ-238ND4-1 - Yaroslavl Motor Plant and QSC8.3-C245 produced by Cummins.

YaMZ-238ND4-1	QSC8.3-C245
Number of cylinders	8	6
Cylinder arrangement	V-shaped	Row
Turbocharging	No	Yes
Cylinder diameter	130 mm	114 mm
Piston stroke	140 mm	135 mm
Engine capacity	14.86 l	8.3 l
Engine power	238 hp (175 kW) at 1900 rpm	245 hp (180 kW) at 2000 rpm
Torque (maximum)	1108 Nm (at 1150 ... 1350 rpm)	1085 Nm (at 1300 ... 1600 rpm)

Engine QSC8.3-C245 "Cummins"

Six-cylinder four-stroke liquid-cooled diesel engine with turbocharging and air-to-air charge air cooling QSC8.3-245. Engine QSC8.3-C245 “Cummins”

Technical characteristics of QSC8.3-C245 "Cummins"
Engine displacement	8.3 l
Bore and stroke	114 mm x 135 mm
Maximum torque	1085 Nm at 1300…1600 rpm
Operating power	180 kW (245 hp) at 2000 rpm

The engine is equipped with the “Bosch” + “Quantum” system, which contains electronic fuel injection, diagnostics, engine protection and engine control systems. Oil purification system with full flow filter. Liquid-oil heat exchanger for cooling engine oil.

Engine of the bulldozer Chetra T-15

Eight-cylinder V-shaped (camber angle 90°) four-stroke diesel engine without turbocharging, liquid cooling YaMZ-238ND4-1 from the Yaroslavl Motor Plant.

Cylinder diameter and piston stroke - 130 mm x 140 mm;
Engine displacement - 14.86 l;
Operating power - 175 kW (238 hp) at 1900 rpm;
Maximum torque - no less than 1108 Nm at 1150...1350 rpm.

Six-cylinder four-stroke diesel engine with turbocharging and air-to-air charge air cooling, liquid cooling QSC8.3-C245.

The cylinder arrangement is in-line;
Cylinder diameter and piston stroke - 114 mm x 135 mm;
Engine displacement - 8.3 l;
Operating power - 180 kW (245 hp) at 2000 rpm;
Maximum torque - 1085 Nm at 1300...1600 rpm.

Engine with the Quantum system, containing electronic fuel injection, diagnostics, engine protection and engine management systems.

Oil purification system with full flow filter. Liquid-oil heat exchanger for cooling engine oil.

Transmission

The planetary gearbox of the bulldozer T-15.01M, CHETRA T-15M, switchable under load, with clutches with a diameter of 415 mm, operating in oil and having a high torque transmission capacity, provides three forward gears and three reverse gears. The modulating gearbox system allows you to smoothly change gears under load. Changing gears and driving directions is carried out with one lever. The gearbox is combined with a matching gearbox and main gear into a single power unit, which is installed in the bore of the rear axle.

Three-element, single-stage torque converter with an active diameter of 410 mm, maximum transformation ratio Ko = 2.9 with a pump drive gearbox, connected to the gearbox with a splined clutch, installed on the front wall of the rear axle. The torque converter is connected to an elastic coupling mounted on the engine by a cardan transmission.

Gearbox characteristics
Broadcast	Forward travel	Reverse
1	3.9	5.1
2	6.9	9.0
3	11.1	14.2

Bulldozer gearbox

Broadcast	Forward travel	Reverse
1	3,9	6.2
2	7,1	9.1
3	11.1	14,7

Planetary power shift gearbox with 415 mm diameter oil-fed clutches with high torque transmission capability, providing three forward and three reverse gears. The modulating system allows you to smoothly change speeds under load. Changing gears and driving directions is carried out with one lever. Structurally, it is combined with a matching gearbox and main gear into a single power unit installed in the bore of the rear axle. Three-element, single-stage torque converter with an active diameter of 410 mm, maximum transformation ratio Ko = 2.9 with a pump drive gearbox, connected to the gearbox with a splined clutch, installed on the front wall of the rear axle. The torque converter is connected to an elastic coupling mounted on the engine by a cardan transmission.

Final drive

The final drive is two-stage, the 1st stage is external gears, the 2nd stage is planetary according to the “to +1” scheme (with a stopped ring gear). To facilitate replacement in the field, the drive sprocket is made of five sectors that are secured with bolts.

Chassis

Suspension:

three-point semi-rigid with a remote swing axis of the bogies provides high traction and grip properties, reduced shock loads on the chassis system, and improved working conditions. Support, support rollers and idler wheels with one-time lubrication for the entire service life with self-clamping “double cone” seals.

Number of road wheels (on each side) - 7;
Number of support rollers (on each side) - 2;
The tension wheel is micro-sprung.

Caterpillars:

prefabricated with one lug and a seal to hold liquid lubricant in the hinge. Track tension is easily adjusted with a grease gun.

Link pitch - 215.9 mm;
Number of shoes (on each side) - 40;
The height of the lugs is 70 mm;
Shoe width - 560 mm;
Support surface area - 3.26 m2;
Ground pressure - 0.87 kgf/cm2.

Hydraulic system

Hydraulic system characteristics:

gear pump S1A6155, capacity 235 l/min at 1750 engine rpm
four-section valve, consisting of one valve and three spool sections
maximum response pressure of the safety valve 20 MPa (200 kgf/cm²)
hydraulic tank capacity (welded tank, adapted for mechanical cleaning of internal surfaces) - 130 l

Spool sections	Distributor spool position	Number of cylinders	Cylinder diameter x Stroke, mm x mm
Blade lift	lift, neutral (hold), lower, float	2	110 x 1200
Blade misalignment	right, neutral, left	1	160 x 310
Raising the ripper	lift, neutral, lower	2	160 x 530

Gearbox of the T-1501 tractor

Gearbox type	Planetary
Coupling diameter	415 mm
Checkpoint operating environment	oil
Transformer	three-element, single stage
Transformation ratio	2,9

Gear ratios

Broadcast	Forward travel	Reverse
1	3,9	6,2
2	7,1	9,1
3	11,1	14,7

Chassis system

The suspension of the CHETRA T-15.01M bulldozer is three-point, semi-rigid with a remote bogie swing axis. Such a suspension provides high traction and grip properties, reduces shock loads on the chassis system, and improves working conditions. Support, support rollers and idler wheels with one-time lubrication and self-clamping double cone seals.

Number of road wheels	8
Number of support rollers	2

Chassis of the T-15.01 tractor

Suspension

Type	three-point, semi-rigid
Number of support rollers	2 (each side)
Number of road wheels	7 (each side)
Idler wheel	with microsprung

The suspension provides high traction properties. Impact loads on the chassis are minimal. Idler wheels, support rollers, and suspension rollers are lubricated for a lifetime.

Caterpillars

Surface area	3.26 m2
Ground pressure	0.87 kgf/cm2
Link pitch	215.9 mm
Number of shoes	40 (each side)
Shoe width	560 mm
Height of lugs	70 mm

Caterpillar

The tracks of the bulldozer T-1501M, CHETRA T-15.01M are prefabricated with one grouser and a seal to hold liquid lubricant in the hinge. Track tension is easily adjusted with a grease gun.

Characteristics of the T-15.01M caterpillar
Link pitch, mm	215,9
Number of shoes	44
Height of lugs, mm	70
Shoe width, mm	810
Support surface area, m²	5,44
Ground pressure, kgf/cm²	0,56

Ripping equipment

Depending on the operation of the CHETRA T-15M, T-15.01M bulldozer, one, two or three teeth can be mounted on the ripper, which allows for high productivity.

Ripper type	Non-adjustable, multi-tooth
Number of teeth	1 / 3
Weight, kg	2268 / 2475
Max. lifting height, mm	738 / 555
Max. depth, mm	830 / 770
Max. pullout force, T	21,0 / 21,2
Max. penetration force, T	9,6 / 9,6

Ripping equipment of the bulldozer Chetra T-15

Depending on the operating conditions of the ripper, one, two or three teeth can be mounted, which allows for high productivity.

Ripper type	Number of teeth	Weight, kg	Max. lifting height, mm	Max. depth, mm	Max. pullout force, T	Max. penetration force, T
Non-adjustable, multi-tooth	3	2475	555*	700*	21,2	9,6
Non-adjustable, single-prong	1	2268	738*	830*	21,0	9,6

* - with submerged lugs.

Bulldozer equipment

The large capacity of the hemispherical blade of the CHETRA T-15.01 bulldozer ensures increased productivity, and the use of diagonal traction when transmitting lateral forces from the blade to the left spar of the bulldozer frame ensures maximum proximity of the blade to the hood of the bulldozer and maximum pressure force on the blade blade.

Blade	SU blade
Blade length x height, mm	4100 x 1524
Dump capacity, m²	9,2
Lifting height, mm	1250
Depth, mm	475
Max. misalignment, hail	±14°
Blade weight, kg	3610

Bulldozer equipment T-15.01

SU blade	U blade	Straight blade
Blade length	3820 mm	4180 mm	4050 mm
Blade height	1520 mm	1650 mm	1490 mm
Blade volume	6.8 m3	8.5 m3	5.8 m3
Lifting height above ground	1150 mm	1150 mm	1150 mm
Deepening	555 mm	555 mm	555 mm
Tilt adjustment	+/- 10 degrees	+/- 10 degrees	+/- 10 degrees
Weight	2805 kg	3345 kg	2980 kg

dimensions

The dimensions of the bulldozer CHETRA T-15M, T-15.01M are presented by the following characteristics:

Dimensions CHETRA T-15.01M
Length, mm	7624
Width with blade, mm	4100
Height, mm	3760

Overall dimensions of CHETRA T-15.01M.

Modifications and equipment

CHETRA T-15M, T-15.01M bulldozers are supplied in the following modifications and configurations:

Modification	Equipment	Engine power, kW/hp	Weight, kg
T-15.01YAMB-1	YaMZ-238ND4-1, hemispherical blade, low pressure. On the ground	175/238	28209
T-15.01YAMBR-1	YaMZ-238ND4-1, hemispherical blade, low pressure. On the ground, ripper 1 tooth	175/238	30500
T-15.01YAMBR-1-01	YaMZ-238ND4-1, hemispherical blade, low pressure. On the ground, ripper 3 teeth	175/238	30500

Standard Equipment

The standard equipment of the CHETRA T-15.01M bulldozer includes:

Adjustable operator's seat with soft cushion
Air purifier
Cab heating fan
Decelerator
Sound signal
Front tow hook
Motor protection
Hydraulic device for track tensioner
Lighting system
Multi-layer protection
Muffler
Parking brake
Power train protection
Replaceable ring gear segments
ROPS/FOPS protective structure
Safety belt
External power socket 24 V
24 V power socket
Alternator 75 A
Rechargeable batteries (2), 12 V, 190 A*h (on-board voltage 24 V)
Cigarette lighter
Starter
Electric hour meter

On the instrument panel:

tachometer
coolant temperature gauge
engine oil pressure gauge
engine oil temperature gauge
onboard voltage indicator
fuel level indicator
transmission oil temperature gauge

Indicators on the instrument panel:

emergency engine oil pressure
engine coolant overheating
lack of battery charge
air filter clogged
clogged filter in the hydraulic tank
overheating of oil in the hydraulic tank
clogging of the transmission filter
minimum transmission oil temperature
overheating of transmission oil
clogged engine oil filter
emergency transmission oil pressure

Equipment for working in arctic conditions

To operate in arctic climatic conditions, the CHETRA T-15.01M bulldozer is additionally equipped with:

Pre-starting liquid heater PZD 30L, HYDRONIC M-II, HYDRONIC 35

Heating capacity, kcal/hour	30 000
Fuel consumption, kg/hour	4,95

Independent cabin air heater AIRTRONIK-2D

Heating capacity, W	2 200
Fuel consumption, kg/hour	0,28

Cabin heater powered by engine coolant
Insulating cover
Engine radiator shutters

Bulldozer T-1501