Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Coolant | — | ||||
| Oil | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
The Volvo Penta TAD741GE is a 7.28 L 6-cylinder turbocharged engine rated at 1800 rpm. It powers generator sets from MQ Power, including the DCA-220SSV and DCA-220SSVU.
Also known as: Volvo Penta TAD741GE
| Displacement | 7.28 L |
|---|---|
| Cylinders | 6 |
| Aspiration | turbocharged |
| Rated speed | 1800 rpm |
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Coolant | — | ||||
| Oil | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Fuel strainer | Clean | 200 hr | 1 mo | Clean if contains dust or water; check every 200 hours of operation or once a month |
| Air filter | Clean | 250 hr | Remove air cleaner element and clean heavy duty paper element with light spray of compressed air; replace as needed | |
| Engine oil and filter | Replace | 250 hr | Replace engine oil filter and oil at 100 hours first time only | |
| Fuel filter/water separator | Check | 250 hr | ||
| Coolant protection level and radiator | Check | 500 hr | Add Supplemental Coolant Additive (SCA's) to recharge engine coolant | |
| Fuel filter | Change | 500 hr | Replace fuel filter cartridge with new one every 500 hours or so | |
| Unit (inside and outside) | Clean | 500 hr | ||
| Fuel tank | Inspect | 1000 hr | Inspect and clean | |
| Hoses and clamps | Check | 1000 hr | If hoses need replacing, ensure slope of hose is at least 1/2 inch per foot | |
| Insulation resistance (generator) | Test | 1000 hr | Measure insulation resistance; over 3 Mohms | |
| Rear rotor support bearing | Check | 1000 hr | ||
| GFCI receptacles | Test | 1 mo | Both receptacles should be tested at least once a month using the Test button | |
| Trailer brakes | Inspect | First service — Inspect first 200 miles of operation, then every 3,000 miles; more frequently on rough terrain |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Clearance | Fan belt deflection | 10 to 15 | mm | depressed with thumb |
| Clearance | Fan belt tension (deflection) | 10 to 15 | mm | depressed with thumb |
| Other | Antifreeze mixing ratio | less than 50 | % | |
| Other | Battery electrolyte specific gravity | 1.28 | specific gravity | at 68°F (charged); 1.245 or lower indicates dead battery |
| Other | Battery specific gravity, dead (recharge or replace) | 1.245 or lower | at 68 deg F | |
| Other | Battery specific gravity, sufficiently charged | 1.28 | at 68 deg F | |
| Other | Engine air bleeding after running out of fuel | 15-30 | seconds | switch in ON position |
| Other | Engine cool-down before shutdown | 3-5 | minutes | low speed, no load applied |
| Other | Engine oil filter and oil replacement, first time only | 100 | hours | first service |
| Other | Glow plug pre-heat time (cold weather) | at least 50 | seconds | cold weather conditions |
| Other | Governor frequency variation | ±.25 | % | electric governor regulation |
| Other | Main circuit breaker rating | 600 | amp | 3-pole; protects U, V, W output terminal lugs |
| Other | Trailer brake inspection interval | first 200 miles, then every 3,000 miles | miles | trailer brakes |
| Other | Trailer suspension inspection interval | every 6,000 | miles | leaf suspension springs and associated components |
| Pressure | Engine oil pressure gauge reading | 303~503 | kPa | normal operation (44 to 73 psi) |
| Pressure | Engine oil pressure, normal operating | 303~503 | kPa | normal operating conditions |
| Pressure | Engine oil pressure, normal operating | 44 to 73 | psi | normal operating conditions |
| Pressure | Low oil pressure fault threshold | 15 | psi | major fault |
| Pressure | Primary air filter element replacement vacuum (restriction indicator) | 625 mm (25 in. Hg) | mm | when restriction indicator shows this vacuum |
| Resistance | Generator insulation resistance | over 3 | Mohms | measured |
| Speed | Engine speed for 60 Hz | 1800 | rpm | rated load applied |
| Speed | Engine speed, normal operating | approximately 1600 | RPM | normal operating conditions |
| Temperature | Antifreeze freezing point | -37 | °C | 50% antifreeze concentration (freezing point -34°F) |
| Temperature | Coolant temperature, normal operating | 165 and 203 | degrees Fahrenheit | green zone |
| Temperature | High coolant temperature fault threshold | 239 | °F | major fault |
| Temperature | Water temperature gauge reading | 165 to 203 | °F | normal operation |
| Torque | Trailer shackle bolt, shoulder type | MIN 30 - MAX 50 | ft-lb | snug fit only; parts must rotate freely; locking nuts or cotter pins provided to retain nut-bolt assembly |
| Torque | Trailer suspension U-bolt, 1/2 in | MIN 45 - MAX 60 | ft-lb | |
| Torque | Trailer suspension U-bolt, 3/8 in | MIN 30 - MAX 35 | ft-lb | |
| Torque | Trailer suspension U-bolt, 7/16 in | MIN 45 - MAX 60 | ft-lb | |
| Torque | Trailer wheel lug nuts, 12 in and 13 in wheels | 20-25 (first pass), 35-40 (second pass), 50-65 (third pass) | ft-lb | tighten in 3 separate passes in sequence; retorque after first road use |
| Torque | Trailer wheel lug nuts, 14 in, 15 in and 16 in wheels | 20-25 (first pass), 50-60 (second pass), 90-120 (third pass) | ft-lb | tighten in 3 separate passes in sequence; retorque after first road use |
| Voltage | Voltage regulator manual adjustment | ±15 | % | output voltage adjustment |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | Coolant/antifreeze as recommended by the engine manufacturer | Antifreeze mixing ratio must be less than 50%; add Supplemental Coolant Additive (SCA's) to recharge engine coolant; freezepoint chart: 50 vol% antifreeze = -34 C / -37 F | |||
| Coolant | VOLVO antifreeze/summer coolant (concentrate mixed with 50% demineralized water, or pre-diluted) | above -37°C | 4.8 Gal | Engine and radiator capacity 18 liters; antifreeze mixing ratio must be less than 50%; 50% antifreeze freezes at -34°F | |
| Engine oil | Refer to the VOLVO Engine Owner's Manual | Check crankcase oil level prior to each use or when fuel tank is filled; level must be between the two notches on the dipstick | |||
| Engine oil | API Service Classification CC/SC, CC/SD, CC/SE, CC/SF | API | 7.7 gal | Capacity 29 liters; drain oil while warm; do not overfill | |
| Fuel | Diesel Fuel #2 | 100.0 gal | Internal fuel tank located inside trailer frame (380 liters); tank must be closed tightly after filling | ||
| Fuel | Diesel fuel (grade may vary according to season and locations) | Keep tank full with diesel fuel in cold weather to reduce water condensation; drain water/impurities from bottom of tank occasionally | |||
| Other | Battery electrolyte - add only distilled water | Maintain fluid level between specified marks; do not overfill |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
⚠ Wear safety glasses when removing or installing force fitted parts.
Tools: Screwdriver or standard adjusting tool, Jack stands
⚠ NEVER use a pneumatic air gun to tighten wheel lug nuts.
Tools: Torque wrench
⚠ Never place jumper plates on the voltage change-over board while the generator is in operation.
⚠ Never place jumper plates on the voltage change-over board while the generator is in operation.
⚠ Consult a licensed electrician before connecting generator to a building's electrical system.
⚠ Removing the radiator cap while the engine is hot will cause boiling water to gush out, causing severe scalding.
⚠ Incorrect battery cable connection will cause electrical damage to the generator.
⚠ Cleaning inside the machine is dangerous; clean only with engine off and negative battery terminal disconnected.
Tools: Compressed air
⚠ Removing the oil drain plug while the engine is hot can cause hot oil to gush out.
⚠ Never place hands near the belts or fan while the generator set is running.
⚠ Allow engine to cool when flushing radiator; hot coolant can cause severe burns.
⚠ DO NOT remove radiator cap until unit has completely cooled.
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 120, 127, 139, 240, 254, 277 | 1 | Selectable output voltages | Single-phase voltages available via voltage selector switch | |
| 139 | 1 | 1Ø-139V at UVWO output terminal lugs | 6 jumper plates (240V configuration) | |
| 208, 220, 240, 416, 440, 480 | 3 | Selectable output voltages | Three-phase voltages available via voltage selector switch | |
| 240 | 1 | 1Ø-240V at UVWO output terminal lugs | 6 jumper plates (240V configuration) | |
| 240 | 3 | 3Ø-240V at UVWO output terminal lugs | 6 jumper plates on voltage change-over board (240V configuration) | Factory default configuration |
| 277 | 1 | 1Ø-277V at UVWO output terminal lugs | 6 jumper plates (480V configuration) | |
| 480 | 1 | 1Ø-480V at UVWO output terminal lugs | 6 jumper plates (480V configuration) | |
| 480 | 3 | 3Ø-480V at UVWO output terminal lugs | 6 jumper plates in 3 different positions (480V configuration) | Every jumper plate must be used |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
The Volvo Penta TAD741GE has a displacement of 7.28 liters with 6 cylinders.
The Volvo Penta TAD741GE powers 2 generator set(s), including MQ Power DCA-220SSV, MQ Power DCA-220SSVU.