The Case 688 crawler excavator produced in 1987-2015, is listed with an operating weight of 29,476 lb (13.4 t), engine power of 90 hp (67 kW), a bucket capacity of 0.99 yd³ (0.76 m³) and a maximum digging depth of 18.5 ft (5.63 m).
Crawler Excavator • 1987-2015 • 4T 390
Key specifications
Useful excavator charts
Charts appear only when enough usable specifications are available.
18.5 ft
27.2 ft
25.3 ft
8.4 ft
9.5 ft
0.4 yd³
1 yd³
1 yd³
How the Case 688 compares
Comparison is against Case crawler excavators in the same broad operating-weight class where enough comparable data exists.
About 19% below the peer average.
In line with the peer average.
About 10% below the peer average.
About 8% below the peer average.
About 8% below the peer average.
Crawler excavator information
| Manufacturer | Case |
|---|---|
| Model | 688 |
| Years of manufacture | 1987-2015 |
Operating specifications
| Operating weight | 29,476 lb (13.4 t) |
|---|---|
| Bucket capacity | 0.99 yd³ (0.76 m³) |
| Minimum bucket capacity | 0.41 yd³ (0.31 m³) |
| Maximum bucket capacity | 0.99 yd³ (0.76 m³) |
| Bucket width | 3.4 ft (1.04 m) |
| Maximum digging depth | 18.5 ft (5.63 m) |
| Maximum horizontal reach | 27.2 ft (8.29 m) |
| Tear-out force | 18,884 lbf (84 kN) |
Engine and emissions
| Engine manufacturer | Case |
|---|---|
| Engine model | 4T 390 |
| Engine power | 90 hp (67 kW) |
| Displacement | 239 cu in (3.9 L) |
| Cylinders | 4 |
| Cylinder bore × stroke | 4.02 × 4.72 in (102 × 120 mm) |
| Maximum torque | 250 lb-ft (339 Nm) |
| RPM at maximum torque | 1500 rpm |
| Diesel particulate filter | No |
Dimensions and transport
| Transport length | 25.3 ft (7.7 m) |
|---|---|
| Transport width | 8.4 ft (2.57 m) |
| Transport height | 9.5 ft (2.9 m) |
| Track width | 24 in (610 mm) |
Equipment and features
| Air conditioning | No |
|---|---|
| Blade | No |
| Cabin adjustment | No |
| Material handling excavator | No |
| Overload alert | No |
| Hydraulic quick hitch | No |
| Mechanical quick hitch | No |
| Track adjustment | No |
Disclaimer: Specifications should be verified against the official machine documentation and confirmed on the CASE Construction Equipment USA website.
