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Hatz 1D90Z Engine

General Technical Data

Engine Specifications

Engine Model ............... Hatz 1D90Z
Engine Type ............... 4-stroke air-cooled single-cylinder direct-injection vertical-shaft diesel
Number of Cylinders ............... 1
Cylinder Arrangement ............... Vertical single-cylinder
Engine Bore, in (mm) ............... 4.09 (104.0)
Engine Stroke, in (mm) ............... 3.35 (85.0)
Displacement, cu.in (L) ............... 44.06 (0.722)
Rated Engine Power, hp (kW) ............... 7.8-15.0 (5.8-11.2)
Rated Engine Speed, rpm ............... 1500-3600
Peak Torque ............... 30.02 lb-ft (40.7 Nm) at 1500 rpm
Idle Speed, rpm ............... 850-1000
Aspiration Type ............... Naturally Aspirated
Operating Speed, rpm ............... 1500-3600
Compression Ratio ............... 20.0:1-21.5:1
Cylinder Block Type ............... High-strength die-cast aluminum alloy with cast iron liner
Cylinder Head Type ............... Light alloy cast construction with specialized cooling fins
Lubrication System ............... Forced lubrication pressure circuit with dedicated gear pump
Oil Pump Type ............... Positive-displacement gear pump driven by crankshaft gear mesh
Oil Filter Type ............... Cleanable micro-mesh screen insert with full-flow filtration
Cooling System ............... Forced-air cooled via flywheel blower wheel integrated fan layout
Water Pump Type ............... None (Air-cooled configuration)
Air Cleaner Type ............... Dry-type dual-element or optional heavy-duty oil-bath filter system
Starting System ............... Electric starter motor or manual crankhandle start mechanism
Electrical System ............... 12V or 24V direct current charging circuit options

Fuel System

Injection Pump Type ............... Integrated high-pressure mechanical unit injection pump assembly
Injection Pump Drive ............... Camshaft lobe operated via heavy mechanical roller tappet arrangement
Injector Type ............... Multi-hole direct injection nozzle layout
Injection Pressure, psi (bar) ............... 3625.94-3916.02 (250.0-270.0)
Governor Type ............... Mechanical centrifugal multi-speed governor assembly with speed control lever
Fuel Feed Pump Type ............... Mechanical diaphragm lift pump or alternative 12V electric feed system
Fuel Filter Type ............... Spin-on high-efficiency cartridge filter or integrated tank outlet screen element
Recommended Fuel Standard ............... EN 590, BS 2869 A1/A2, ASTM D 975-09a 1-D S15/2-D S15
Fuel Tank Capacity, gal (L) ............... 1.85 (7.0)
Fuel Return System ............... Low-pressure excess line routing bypass back to main storage cell
Venting Device Type ............... Automatic bleeding system or manually operated bleed screw config

Dimensions and Weight

Overall Length, in (mm) ............... 15.6 (395)
Overall Width, in (mm) ............... 20.6 (525)
Overall Height, in (mm) ............... 22.2 (565)
Dry Weight, lbs (kg) ............... 241 (109)

Maintenance Data

Service Information

Compression Pressure Minimum, psi (bar) ............... 406 (28.0)
Oil Pressure at Low Idle, psi (bar) ............... 8.7-11.6 (0.6-0.8)
Oil Pressure at Rated Speed, psi (bar) ............... 36.2-43.5 (2.5-3.0)
Lubricating Oil Temperature, F (C) ............... 266 (130)
Intake Valve Clearance (Cold), in (mm) ............... 0.0118 (0.30)
Exhaust Valve Clearance (Cold), in (mm) ............... 0.0118 (0.30)

Engine Oil

Engine Oil Type .................. SAE 5W-30, SAE 10W-30, 10W-40
API Service Classifications ......................... CK-4 or CJ-4
Engine Oil Capacity (Maximum Level), qt (L) ............... 1.69 (1.60)
Engine Oil Capacity (Minimum Level), qt (L) ............... 0.95 (0.90)

Service Intervals

Change engine oil ............... Every 250 hours
Clean oil filter ............... Every 250 hours
Replace fuel filter ............... Every 500 hours
Service air filter ............... Every 500 hours
Valve-lash adjustment ............... Every 250 hours
Check fuel system ............... Every 500 hours
Compression test ............... Every 1000 hours
Replace breather valve ............... Every 1000 hours
Belt inspection ............... Every 100 hours

Service Specifications

Cylinder Bore Inside Diameter, in (mm) ............... 4.0945-4.0953 (104.000-104.020)
Cylinder Bore Maximum Taper in (mm) ............... 0.0019 (0.05)
Cylinder Bore Maximum Out of Roundness, in (mm) ............... 0.0059 (0.150)
Connecting Rod Big End Journal Clearance, in (mm) ............... 0.0016-0.0031 (0.040-0.080)
Main Bearing Journal Clearance, in (mm) ............... 0.0020-0.0035 (0.050-0.090)
Main Bearing Journal Outside Diameter, in (mm) ............... 2.7559-2.7565 (70.000-70.015)
Crankshaft Crankpin Journal Diameter, in (mm) ............... 2.3622-2.3628 (60.000-60.015)
Crankshaft Axial End Play, in (mm) ............... 0.0039-0.0079 (0.100-0.200)
Piston Skirt Outside Diameter, in (mm) ............... 4.0905-4.0913 (103.900-103.920)
Piston to Cylinder Wall Clearance, in (mm) ............... 0.0031-0.0045 (0.080-0.115)
Piston Pin Bore Inside Diameter, in (mm) ............... 1.2598-1.2602 (32.000-32.010)
Piston Pin Outside Diameter, in (mm) ............... 1.2594-1.2596 (31.990-31.995)
Piston Pin to Small End Bushing Clearance, in (mm) ............... 0.0004-0.0009 (0.010-0.023)
Top Ring Groove Side Clearance, in (mm) ............... 0.0024-0.0039 (0.060-0.100)
Second Ring Groove Side Clearance, in (mm) ............... 0.0016-0.0031 (0.040-0.080)
Oil Ring Groove Side Clearance, in (mm) ............... 0.0012-0.0028 (0.030-0.070)
Top Ring End Gap, in (mm) ............... 0.0118-0.0197 (0.300-0.500)
Second Ring End Gap, in (mm) ............... 0.0118-0.0197 (0.300-0.500)
Oil Ring End Gap Limit, in (mm) ............... 0.0098-0.0177 (0.250-0.450)
Intake Valve Stem Outside Diameter, in (mm) ............... 0.3543-0.3549 (9.000-9.015)
Exhaust Valve Stem Outside Diameter, in (mm) ............... 0.3539-0.3545 (8.990-9.005)
Intake Valve Guide Inner Diameter, in (mm) ............... 0.3555-0.3563 (9.030-9.050)
Exhaust Valve Guide Inner Diameter, in (mm) ............... 0.3555-0.3563 (9.030-9.050)
Intake Valve Stem to Guide Clearance, in (mm) ............... 0.0006-0.0020 (0.015-0.050)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0010-0.0024 (0.025-0.060)
Intake Valve Head Recession, in (mm) ............... 0.0275-0.0433 (0.700-1.100)
Exhaust Valve Head Recession, in (mm) ............... 0.0275-0.0433 (0.700-1.100)
Valve Spring Free Length in (mm) ............... 1.9685 (50.000)
Camshaft Journal Clearance, in (mm) ............... 0.0012-0.0028 (0.030-0.070)
Camshaft Journal Diameter, in (mm) ............... 1.9685-1.9691 (50.000-50.015)

Tightening Torques

Cylinder Head Nuts (1-Step), lb-ft (Nm) ............... 22.1 (30.0)
Cylinder Head Nuts (2-Step), lb-ft (Nm) ............... 44.2 (60.0)
Cylinder Head Nuts (3-Step), lb-ft (Nm) ............... 66.4 (90.0)
Connecting Rod Cap Bolts (1-Step), lb-ft (Nm) ............... 14.7 (20.0)
Connecting Rod Cap Bolts (2-Step), lb-ft (Nm) ............... 36.9 (50.0)
Flywheel Retaining Central Nut, lb-ft (Nm) ............... 258.1 (350.0)
Crankcase Split-Line Perimeter Bolts, lb-ft (Nm) ............... 16.2 (22.0)
Crankcase Main Support Tie Bolts, lb-ft (Nm) ............... 33.2 (45.0)
Engine Oil Drain Plug, lb-ft (Nm) ............... 36.9 (50.0)
Engine Oil Pressure Sensor Switch, lb-ft (Nm) ............... 14.7 (20.0)
Injection Pump Flange Nut, lb-ft (Nm) ............... 18.4 (25.0)
Injection Nozzle Hold-Down Bracket Bolt, lb-ft (Nm) ............... 20.6 (28.0)
Injection High Pressure Line Union Nuts, lb-ft (Nm) ............... 22.1 (30.0)
Cylinder Head Valve Cover Capscrews, lb-ft (Nm) ............... 7.4 (10.0)
Timing Gear Housing Cover Fasteners, lb-ft (Nm) ............... 8.8 (12.0)
Rocker Shaft Support Mounting Bolt, lb-ft (Nm) ............... 29.5 (40.0)
Camshaft Retaining Thrust Flange Screws, lb-ft (Nm) ............... 8.8 (12.0)
Governor Housing Cover Retention Screws, lb-ft (Nm) ............... 7.4 (10.0)
Fuel Feed Diaphragm Pump Flange Nuts, lb-ft (Nm) ............... 16.2 (22.0)
Fuel Tank Base Cradle Mounting Bolts, lb-ft (Nm) ............... 18.4 (25.0)
Exhaust Silencer Cowling Mounting Nuts, lb-ft (Nm) ............... 24.3 (33.0)
Air Intake Manifold Port Connection Bolts, lb-ft (Nm) ............... 8.8 (12.0)
Dry Air Cleaner Housing Frame Bolts, lb-ft (Nm) ............... 16.2 (22.0)
Electric Starter Motor Flange Mounting Studs, lb-ft (Nm) ............... 33.2 (45.0)
Flywheel Charging Alternator Stator Fasteners, lb-ft (Nm) ............... 7.4 (10.0)
Speed Control Adjustment Lever Pivot Nut, lb-ft (Nm) ............... 11.1 (15.0)
Oil Pump Casing Counter-sunk Screws, lb-ft (Nm) ............... 7.4 (10.0)
Engine Support Base Mounting Foot Bolts, lb-ft (Nm) ............... 62.7 (85.0)
Breather Valve Assemblies Retention Covers, lb-ft (Nm) ............... 4.4 (6.0)
Decompression Axle Lever Pivot Lock Nut, lb-ft (Nm) ............... 8.8 (12.0)
Auxiliary Side Power Take Off Flange Screws, lb-ft (Nm) ............... 16.2 (22.0)
Oil Filter Spin-On Adaptor Spindle Fitting, lb-ft (Nm) ............... 25.8 (35.0)

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• Hatz Engines Specs
  
• Hatz 1D90 Specs
  
• Hatz 1D90E Specs
  
• Hatz 1D90V Specs
  

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