1. Diamond Power Systems Auxiliary Power Units April, 2008

2. Diamond Power APU

3. APU with access panels open

4. Driver’s Control Panel

5. HVAC Unit

6. HVAC Unit (open)

7. AC Condenser

8. APU Mounted on Frame Rail

9. HVAC Mounted Under Sleeper

10. Condenser Mounted Behind Sleeper

11. Driver’s Control Panel Mounted in Sleeper

12. Detail of Frame Rail Mounting

13. Specifications APU Specification Engine14.0 Hp, 2 Cylinder, Water cooled CoolingSelf-contained OR Truck Water Bore X Stroke2.64" X 2.68" Rated Power6.5 KW @ 2600RPM Fuel Consumption0.15 G/Hr (19.2 Ounces/Hr) at idle, 0.5 G/Hr (64 Ounces/Hr) at full speed Exhaust Temp860°F Engine Oil0.793G/3.0L You can use any API Service CF, CF-4, CG-4 or CH-4 oil Valve Clearance0.2~0.3mm Engine Compression300 psi (2.0 MPa) Starter160 Cranking Amps

14. Specifications (continued) Noise Level (dB)70 dB Alternator60 Amp @ 12 V DC Generator35 Amp @ 120V AC Oil Pressure Switch7.1~142.2 psi (0.5~10kgf/cm2) Overheat SwitchOpens at 203°F Intake & Ex. Valves 0.0057"~0.0073" (0.145~0.185mm) Belt Tension Alternator: 45~55 ft-lb (61~75 N-M) Generator: 70~80 ft-lb (95~108 N-M) Thermostat Starts to open at 160°F and fully open at 185°F Weight 185lb @ Engine 330lb @ APU Dimensions 26" L X 21" D X 29" H

15. Specifications (continued) HVAC Specification Air Conditioning10,000 BTU/hr System capacity64~68 oz of R-134A System oil capacity14 oz of PVE (Polyvinylether) Compressor6~10 Amp @ 120V Condenser Fan9~12 Amp Binary Pressure SwitchNormally closed between 26~335 psi Operating PressuresLow side 24~45 psi, High side 110~250 psi Heat5000/10000 BTU/hr (Low/High) Speed Resister25 Ohms Heating Coils10 Ohms each Thermo FuseBlows at 307.4°F (152°C) Weight100lb Dimensions (Whole HVAC) 28" L X 15" D X 12.5" H

16. Thank you