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Caterpillar
3508 Land Mechanical Drilling Engine
Cat 3508 engines set the standard in the drilling industry. For many years the 3500 has been the preferred choice by drillers due to their high performance, durability, and reliability in the oilfield. The ideal application for the 3508 engine is mechanical drive for land drilling rigs. Cat engines are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty. 3508 engines, with ratings: 3508 engines, with ratings: 507-846 bkW (680-1135 bhp) @ 1200-1900 rpm. Not emissions certified, available for non-regulated areas.
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Details
Specifications
Engine Specifications
| Spec | Value |
|---|---|
| Maximum Rating | 1135 BHP 846 bkW |
| Emissions | Non-certified Non-certified |
| Displacement | 2111 in³ 34.5 l |
| Minimum Rating | 680 BHP 507 bkW |
| Bore | 6.69 in 170 mm |
| Stroke | 7.48 in 190 mm |
| Rated Speed | 1900 r/min 1900 r/min |
| Aspiration | Turbocharged-Aftercooled Turbocharged-Aftercooled |
| Governor and Protection | W3161 W3161 |
| Engine Weight – Net Dry | 9500 lb 4309 kg |
| Oil Change Interval | 500 500 |
| Rotation from Flywheel End | Counterclockwise Counterclockwise |
| Flywheel and Flywheel Housing | SAE No. 00 SAE No. 00 |
| Flywheel Teeth | 151 151 |
Capacity for Liquids
| Spec | Value |
|---|---|
| Minimum Cooling System – Engine Only | 27.2 gal (US) 103 l |
Dimensions
| Spec | Value |
|---|---|
| Length | 84.1 in 2136 mm |
| Width | 67 in 1702 mm |
| Height | 67.7 in 1720 mm |
Standard Equipment
Air Inlet System
- Corrosion-resistant aftercooler core
- Regular duty air cleaner
- Service indicator
Control System
- Governor, Woodward 3161 — RH
- Pneumatic control
- Governor control – positive locking
Cooling System
- Thermostats and housing (dual outlet)
- Jacket water pump, gear driven
Exhaust System
- Dry exhaust manifold
- Exhaust flexible fitting, adapters, and flanges
Flywheel and Housing
- SAE No. 00 flywheel
- SAE No. 00 flywheel housing
- SAE standard rotation
Fuel System
- Fuel filter
- Fuel transfer pump
- Flexible fuel lines
- Fuel priming pump
Instrumentation
- Analog instrument gauges:
Lubrication System
- Crankcase breather
- Oil cooler
- Oil filter
- Shallow oil pan
- Oil drain extension, 2 in NPT female connection
Mounting System
- Rails, mounting, floor type
Power take-offs
- Accessory drive
- Front housing, two-sided
Protection System
- Manual shutoff control, LH
- Junction box
- Safety shutoff protection, energized to shutdown
Starting System
- Air starting motor
- Air silencer
General
- Paint – Cat yellow
- Vibration damper and guard
- Lifting eyes
Optional Equipment
Air Inlet System
- Heavy duty air cleaner
- Remote air inlet adapters
Control System
- Load sharing governor, 2301A
- Load sharing module
- Governor conversion to 0-200 mA direct rack control
- Local speed throttle control
- Throttle position sensors
Cooling System
- High gloss black folded core radiators and conventional core radiators
- Belt guard
- Blower fan
- Fan drive and fan pulley
- Radiator cover
- Water level switch gauge
- Air separator
- Coolant level sensors
- Connections
Exhaust System
- Exhaust elbows
- Exhaust mufflers
Fuel System
- Primary fuel filter
Generator and Attachments
- Low voltage extension box
- Potential and current transformers
- Air filter
- Cable access box
- Bearing RTDs
Instrumentation
- Customer management device
- Gauges and instrumentation panels
- Switches and contactors
Lubrication System
- Crankcase fumes disposal
- Oil pan accessories
Power Take-off
- Crankshaft pulley
- Front stub shaft
- Charging alternator
- Air compressor
Protection System
- Explosion relief valves (3)
- Shutoffs
- Switches and contactors
Starting System
- Manual air starter
- Air pressure regulator
General
- Flywheel guard