Machine models
Cat 730EJ specifications
This 730EJ record describes the C11-powered Ejector
The original AEHQ5634-03 publication matches the C11 engine and power entries in this reference. It describes the older 730 Ejector generation, not every truck later sold as 730EJ. Its emissions statement is EPA Tier 3/EU Stage 3a. A current C13B brochure should not be used to order this machine's engine or aftertreatment parts.
The current AEXQ4396 publication instead identifies a C13B-powered 730EJ and a combined eject/transmission lever. Its newer assistance features are not evidence that the older C11 truck has those controls. Establish the serial number and installed equipment before comparing an offered machine with either publication.
Original730Ejector AEHQ5634-03: engine/emissions specificationp13Modern730EJ AEXQ4396-00: engine identity and combined controlpp3–4The older differential locks require their actual switch states
The C11 brochure describes an inter-axle-lock switch at the footrest. Full cross-axle locking also uses the dash-mounted selection with the footswitch. This differs from assuming that every generation has fully automatic traction control.
Describe the selected switches and wheel behavior when reporting a traction complaint.
Its electronic transmission includes an engine-overspeed inhibitor and programmable top-gear selection. A limited highest gear can therefore reflect a programmed limit. The brochure also describes protective behavior at high engine speed; an observed shift or converter-lockup change needs that operating context before it is called a transmission failure.
The retarder is described as an integral oil-filled unit. It should not be identified from a later generation's engine-compression-brake description merely because the trucks have similar bodies. Check the applicable controls and maintenance instructions for this C11 driveline.
Original AEHQ5634-03: transmission protection/retarderp5 and manual differential-lock controlsp6Ejection and retraction replace a conventional tipping cycle
The body ejects horizontally through a telescopic cylinder. The original cover names an eject cycle and a retract cycle; the inherited raise/lower headings below are corrected to those functions. A shorter eject time is not a body-raising speed.
Caterpillar's material qualification calls for rocks smaller than 152 mm/6 in for the stated durability application. Low overhead capability does not make every oversized rock suitable for the ejector body, nor remove the need to assess the discharge area.
The dimension drawing also separates underbody ground clearance from transverse wheel spacing. Its corrected ground-clearance value is taken from the drawing, not from the much larger front-view width. Earlier entries remain in the discrepancy table so the transcription can be identified.
Original AEHQ5634-03: ejector/material scopep7, cycle timesp14 and visually checked dimension drawingp15| Listing-entry count |
|---|
| 1 |
Cat 730EJ: articulated dump truck.
| Configuration | Documented field and quantity |
|---|---|
| 730EJ |
|
| Specification | 730EJ |
|---|---|
| Overall Length | 31.9 ft |
| Overall Width | 11.63 ft |
| Overall Height | 12.32 ft |
| Front-view wheel-center spacing | 7.46 ft |
| Ground Clearance | 495 mm (1.6 ft) |
| Dump Height | 10 ft |
| Dump Ground Clearance | 2.96 ft |
| Specification | 730EJ |
|---|---|
| Eject time | 12 sec |
| Capacity - Heaped | 22.1 yd3 |
| Capacity - Struck | 17.7 yd3 |
| Rated Payload | 61,994 lb |
| Retract time | 15 sec |
| Specification | 730EJ |
|---|---|
| Engine Model | C11 Acert |
| Gross Power | 325 hp |
| Net Power | 317 hp |
| Power Measured @ | 1,800 rpm |
| Displacement | 680 cu in |
| Specification | 730EJ |
|---|---|
| Fuel Capacity | 94 gal |
| Hydraulic System Fluid Capacity | 46.5 gal |
| Cooling System Fluid Capacity | 18 gal |
| Engine Oil Capacity | 11 gal |
| Transmission Fluid Capacity | 9.5 gal |
| Specification | 730EJ |
|---|---|
| Transmission Type | electronic transmission |
| Number Of Forward Gears | 6 |
| Number Of Reverse Gears | 1 |
| Max Speed | 34 mph |
| Specification | 730EJ |
|---|---|
| Center Axle - Empty | 13,140 lb |
| Front Axle - Empty | 30,821 lb |
| Rear Axle - Empty | 12,368 lb |
| Front Axle - Loaded | 32,805 lb |
| Center Axle - Loaded | 43,144 lb |
| Rear Axle - Loaded | 42,373 lb |
| Total Empty | 56,328 lb |
| Total Loaded | 118,322 lb |
| Figure | 730EJ |
|---|---|
| Engine horsepower per 1,000 lb of weight | 5.6 |
| Fuel tank per engine horsepower | 0.30 gal |
| Rated payload per cubic yard of heaped body | 2,805 lb (rounded) |
| Equipment group | articulated dump truck |
|---|
| Brand | Equipment group | Compared entry | Sort order |
|---|---|---|---|
| Cat | articulated dump truck | 730EJ | Descending quantity; 1 is largest |
| Figure | 730EJ | Rank | Lowest in line | Highest in line |
|---|---|---|---|---|
| Engine power | 317.0 hp | 7 of 11 | 218.6 hp | 496.0 hp |
| Listed weight | 56,328 lb | 5 of 10 | 39,602 lb | 79,521 lb |
| Fuel capacity | 94.0 gal | 12 of 13 | 28.6 gal | 148.0 gal |
| Horsepower per 1,000 lb | 5.6 hp | 9 of 10 | 5.5 hp | 6.9 hp |
| Rated payload | 6,200.0 lb | 10 of 10 | 6,200.0 lb | 84,000.0 lb |
| Base version | 725C | 730EJ | 740 Bare Chassis |
|---|---|---|---|
| Engine power | 314 hp | 317 hp | 452 hp |
| Weight | 725C: 51,191 lb; 730EJ: 56,328 lb | ||
| Fuel capacity | 28.6 gal | 94 gal | 143.5 gal (US) |
| Front-view wheel-center spacing | 730EJ: 7.46 ft | ||
| Rated payload | 23,587 lb | 61,994 lb | 40 ton (US) |
730EJ: owner reports
Related account: “Slow fan, a smoking engine and shifting stuck in first”: 725 to 735 Bare Chassis.
| Forum index | Equipment class queried | Names in the search | Matching titles |
|---|---|---|---|
| Heavy Equipment Forums | articulated dump truck | Cat and the 730 line that the 730EJ belongs to (no title names the exact model) | 14 |
| Title topic | Titles |
|---|---|
| electrical and sensors | 2 |
| brakes and steering | 2 |
| Topic in the title | Threads | Share of matching threads |
|---|---|---|
| electrical and sensors | 2 | 14% |
| brakes and steering | 2 | 14% |
- CAT 730 Fan Motor Slow B1m Serial (Heavy Equipment Forums, 2026-01-31)
- CAT 730 Xmsn ECM (Heavy Equipment Forums, 2025-12-18)
- CAT 730 Haul Truck Just Bought (Heavy Equipment Forums, 2025-09-14)
- CAT 730 Rocktruck (Heavy Equipment Forums, 2025-05-25)
| Date | Listing index | Equipment class | Names queried | Result |
|---|---|---|---|---|
| 2026-09-24 | MachineryTrader (machinerytrader.com) | articulated dump truck | 730EJ | No matching offers in this snapshot |
| Date | Database | Names queried | Result |
|---|---|---|---|
| 2026-09-24 | U.S. Consumer Product Safety Commission | Cat; 730EJ | No matching recall in the stated search |
| Evidence class | Document, classification and recorded date |
|---|---|
| Reference site |
|
| Forum threads |
|
| Federal agency data |
|
| Model/field | Earlier entry | Corrected quantity or label |
|---|---|---|
| 730EJ Rated Payload | 6,200 lb | 61,994 lb; p13 Total–RatedLoad:28,120kg/61,994lb; rounded cover rating31USshorttons Original Cat specification |
| 730EJ Ground Clearance | 10.06 ft | 495 mm (1.6 ft); p15 side-view underbody clearance; actual drawing visually inspected Original Cat specification |
| 730EJ Center Axle - Empty | 13140 % | 13,140 lb; p13 empty center axle mass,not percentage Original Cat specification |
| 730EJ Front Axle - Loaded | 32805 % | 32,805 lb; p13 loaded front axle mass,not percentage Original Cat specification |
| 730EJ Center Axle - Loaded | 43144 % | 43,144 lb; p13 loaded center axle mass,not percentage Original Cat specification |
| Earlier payload/body ratio | 281lb peryd3,rejected | 61,994lb ÷22.1yd3 =2,805lb peryd3,rounded; not a material-density authorization. |
| Lower Time | 12 sec | Eject time; 12sec ejection,not body lowering;AEHQ5634-03 p14 |
| Raise Time | 15 sec | Retract time; 15sec retraction,not body raising;AEHQ5634-03 p14 |
| Wheelbase | 7.46 ft | Front-view wheel-center spacing; 2275mm/7.46ft transverse spacing in original drawing;not longitudinal wheelbase |
Cat 730EJ: Configuration records
730EJ
| Specification | Source figure |
|---|---|
| Dump | |
| Capacity - Struck | 17.7 yd3 |
| Capacity - Heaped | 22.1 yd3 |
| Rated Payload: p13 Total–RatedLoad:28,120kg/61,994lb; rounded cover rating31USshorttons — Original Cat ejector generation | 61,994 lb [source] |
| Engine | |
| Gross Power | 325 hp |
| Displacement | 680 cu in |
| Engine Model | C11 Acert |
| Net Power | 317 hp |
| Power Measured @ | 1,800 rpm |
| Operational | |
| Fuel Capacity | 94 gal |
| Hydraulic System Fluid Capacity | 46.5 gal |
| Cooling System Fluid Capacity | 18 gal |
| Engine Oil Capacity | 11 gal |
| Transmission Fluid Capacity | 9.5 gal |
| Transmission and speeds | |
| Number Of Forward Gears | 6 |
| Max Speed | 34 mph |
| Number Of Reverse Gears | 1 |
| Transmission Type | electronic transmission |
| Weights | |
| Total Empty | 56,328 lb |
| Total Loaded | 118,322 lb |
| Dimensions and weight | |
| Overall Length | 31.9 ft |
| Overall Width | 11.63 ft |
| Overall Height | 12.32 ft |
| Front-view wheel-center spacing — 2275mm/7.46ft transverse spacing in original drawing;not longitudinal wheelbase | 7.46 ft [source] |
| Dump Height | 10 ft |
| Ground Clearance: p15 side-view underbody clearance; actual drawing visually inspected — Original Cat ejector generation | 495 mm (1.6 ft) [source] |
| Dump Ground Clearance | 2.96 ft |
| Additional specifications | |
| Eject time — 12sec ejection,not body lowering;AEHQ5634-03 p14 | 12 sec [source] |
| Retract time — 15sec retraction,not body raising;AEHQ5634-03 p14 | 15 sec [source] |
| Front Axle - Empty | 30,821 lb |
| Center Axle - Empty: p13 empty center axle mass,not percentage — Original Cat ejector generation | 13,140 lb [source] |
| Rear Axle - Empty | 12,368 lb |
| Front Axle - Loaded: p13 loaded front axle mass,not percentage — Original Cat ejector generation | 32,805 lb [source] |
| Center Axle - Loaded: p13 loaded center axle mass,not percentage — Original Cat ejector generation | 43,144 lb [source] |
| Rear Axle - Loaded | 42,373 lb |
More in Cat: 730C/730C EJ, 725C, AD30–AD55.