Caterpillarexcavator

Caterpillar E110B

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar E110B is a mid-size hydraulic excavator designed for utility and construction applications. This machine features a 3114 engine providing approximately 79 hp (59 kW) of net power, with an operating weight of roughly 25,574 lb (11,600 kg). The E110B is offered in multiple configurations, including various boom and stick options that alter maximum digging depth and reach. It utilizes a hydraulic system with a pump flow capacity of approximately 56.6 to 57 gpm (214 lpm) and a relief valve pressure of 4270 psi.

Across its production era, the E110B maintained a reputation for reliability through robust construction and standardized Caterpillar components. In today's used market, this machine remains highly relevant due to the availability of aftermarket parts and its suitability for tasks requiring precise maneuverability in tight spaces. Its presence in the secondary market is sustained by the ease of finding replacement items like hydraulic oil coolers and bucket links, making it a cost-effective choice for fleet owners managing mid-weight excavation needs.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.

Caterpillar E110B specifications

Engine

Model	3114 (Mitsubishi S4K-T)
Gross Power	79.2 hp (59 kW)
Displacement	268.6 cu in (4.4 L)

Weights

Operating Weight	25,573.7 lb (11,600 kg)
Ground Pressure	5.69–5.7 psi (39.24 kPa)

Dimensions

Transport Length	7,250 mm (23.79 ft) to 8.57 ft (2.61 m) track length on ground
Transport Width	8.17 ft (2.49 m)
Transport Height	8.86–9 ft (2.7–3 m) to top of cab
Tail Swing Radius	6.86–7 ft (2.09 m)
Track Shoe Width	19.69–20 in (50 cm)
Ground Clearance	1.51–1.5 ft (460 mm)
Track Gauge	6.53–7 ft (2.13 m)

Performance

Max Dig Depth	15.59–18.38 ft (4.75–5.6 m) varies by stick configuration
Max Reach at Ground	23.94–27 ft (7.295–8 m) varies by stick configuration
Max Loading Height	17.36–18.92 ft (5.29–5.765 m) varies by stick configuration
Max Cutting Height	25.12–27 ft (7.655–8 m) varies by stick configuration
Max Vertical Wall Digging Depth	13.87–16.29 ft (4.225–4.965 m) varies by stick configuration
Max Travel Speed	3–3.11 mph (5 km/h)
Drawbar Pull	19,333.57 lb (86 kN)

Forces

Hydraulic System Relief Valve Pressure	4270 psi (29,440.6 kPa)
Hydraulic Pump Flow Capacity	56.6–57 gpm (214 lpm)

Service capacities (summary)

Fuel Tank	66.1 gal (250 L)
Hydraulic System Fluid Capacity	42.3 gal (160 L)

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

E110B fluids & capacities

System	Capacity	Recommended fluid
Engine crankcase (with filter)	Not specified	Cat DEO; SAE 10W-30 preferred for ambient temperatures between -18°C (0°F) and 40°C (104°F). Use higher viscosity if cold start requirements dictate.
Fuel tank	250 L (66.1 gal) to 250 L (66 gal)	Not specified
Hydraulic system total AND hydraulic tank	160 L (42 gal) to 160 L (42.3 gal)	Cat HYDO Advanced 10 for SAE 10W (cold to moderate temps); Cat HYDO Advanced 30 for SAE 30W (moderate to hot temps).
Final drive (each)	Not specified	Cat TDTO

Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.

Caterpillar E110B maintenance schedule

Service interval	Tasks
Every 10 h	Check engine oil level and condition Monitor hydraulic fluid level via sight glass Inspect coolant level and cap Drain water from fuel/water separator Verify air filter restriction indicator status Inspect all pins, bushings, and attachment points for wear
Every 250 h	Change engine oil and filter Grease boom, stick, bucket, and swing points Check air filter primary element Perform visual inspection of all hoses and belts
Every 500 h	Replace fuel filter and water separator Replace hydraulic return filter Conduct battery service and terminal inspection Perform detailed undercarriage inspection
Every 1,000 h	Perform hydraulic oil sample analysis (S.O.S) Service final drive oil Inspect turbocharger for play or leaks Check torque on ROPS bolts Measure undercarriage wear components
Every 2,000 h	Change hydraulic system oil Perform coolant flush and replace Conduct comprehensive structural inspection of boom and stick welds Evaluate major machine components for wear

Servicing the E110B beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize Cat S.O.S fluid analysis to monitor engine oil, hydraulic fluid, and coolant integrity. Regularly check for wear metals like iron or copper and contaminants such as silicon (dirt) or sodium (coolant). Maintaining proper hydraulic oil levels prevents cavitation that destroys pumps. Always use approved fluids like Cat HYDO Advanced to avoid chemical sludge caused by cross-contamination with generic oils.

Corrective & Common Repairs

Monitor hydraulic hoses for cracks, abrasion, or leaks to prevent sudden pressure loss. Inspect bucket pins and bushings frequently; worn components lead to excessive play and reduced digging precision. If the engine exhibits abnormal smoke or noise, inspect the 3114 engine's turbocharger and fuel system immediately. Ensure all structural welds on the boom and stick are free from fatigue cracks during routine inspections.

Overhaul & Rebuild Points

Plan for major component evaluations at the 2,000-hour mark. Critical rebuild focus areas include the hydraulic pump, swing motor, and travel motors. During undercarriage overhauls, measure track shoe, roller, and sprocket wear to prevent secondary damage to the chassis. Comprehensive structural inspections should verify the integrity of the swing circle and swivel joint to ensure long-term machine stability.

Seasonal & Environment Servicing

In dusty or quarry environments, check air filters daily and clean radiator/oil cooler fins frequently to prevent overheating. For machines operating in high-moisture areas, prioritize draining the fuel water separator and inspecting battery terminals for corrosion. During cold weather operations, ensure all grease points are serviced to protect pins and bushings from friction-induced wear during initial startup.

E110B fault codes & troubleshooting

Code	Meaning	Likely cause	What to do
110-0	Engine Coolant Temperature — Above Normal	Low coolant level or thermostat failure	Inspect cooling system and refill coolant
110-3	Engine Coolant Temperature Sensor — Voltage High	Open circuit or sensor failure	Check wiring and replace sensor if faulty
174-3	Engine Fuel Temperature — Voltage Above Normal	Open circuit in sensor wiring	Inspect harness and replace sensor if necessary
190-8	Engine Speed — Abnormal Frequency	Speed sensor air gap, sensor failure, or tone ring damage	Check sensor gap and test speed sensor/tone ring
41-3	8-Volt DC Supply — Voltage Above Normal	Short to power on 8V reference circuit	Inspect sensors sharing the 8V supply and isolate fault
41-4	8-Volt DC Supply — Voltage Below Normal	Short to ground on 8V reference circuit	Disconnect sensors one at a time to locate short
E360	Engine Coolant Temperature — High	Low coolant, failed thermostat, or water pump issue	Diagnose cooling system; do not operate until resolved
E361	Engine Coolant Temperature — Very High (Shutdown)	Severe cooling system failure	Perform full cooling system diagnosis; engine shutdown required

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

E110B attachments & work tools

Buckets

Available in widths ranging from 18 in (457 mm) to 42 in (1067 mm). Options include digging, ditching, and rock/Wain-Roy style buckets with pin-on or coupler configurations.

Hydraulic hammers

Compatible with hydraulic breaker units weighing approximately 2410.00 lb (1093 kg). These breakers may include autogreaser features.

Quick couplers

The machine supports coupler attachments and S-type coupling elements for attachment changes.

Thumbs/grapples

Thumb kits are available for the E110B to assist with material handling.

Rippers

Ripper attachments are compatible with this excavator model for breaking hard ground.

Hydraulic-kit notes

Hydraulic kits are available for the E110B. The system features a relief valve pressure of 4270 psi (29440 kPa) and a pump flow capacity of approximately 56.6 gal/min (214 lpm).

All E110B assemblies by section

Every catalogued assembly group for the Caterpillar E110B. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Attachments

6a Bulldozer Ar

7a Bulldozer Ar

Engine Arrangement

3408 Engine-Engine Ar

3306pc Engine-Engine Ar

3116t Engine-Engine Ar

3306di Engine For D7g Track-Type Tractor-Engine Ar

3114 Engine-Engine Ar

3306di Engine For D6dhp Track-Type Tractor-Engine Ar

3306di Engine For 966d Wheel Loader-Engine Ar

3204 Engine-Engine Ar

3208di Engine (112kw)-Engine Ar

3306di Engine For 966fii Wheel Loader-Engine Ar

3306di Engine For 966e Wheel Loader-Engine Ar

3306 Ataac Engine-Engine Ar

3306di Engine For D6h Track-Type Tractor-Engine Ar

3304 Engine (Mossville)-Engine Ar

3306di Engine For 966f Wheel Loader-Engine Ar

3304 Engine (Cbsa)-Engine Ar

3406 Engine-Engine Ar

3208di Engine (100 Kw)-Engine Ar

Machine Arrangement

966fii Wheel Loader-Machine Ar

311b Hydraulic Excavator-Machine Ar

D6h Track-Type Tractor-Machine Ar

D6hlgp Track-Type Tractor-Machine Ar

926e Wheel Loader-Machine Ar

320b Hydraulic Excavator-Machine Ar

D7g Track-Type Tractor-Machine Ar

966e Wheel Loader-Machine Ar

E110b Hydraulic Excavator-Machine Ar

120g Motor Grader (Cbsa)-Machine Ar

El240b Hydraulic Excavator-Machine Ar

D6d Track-Type Tractor-Machine Ar

966f Wheel Loader-Machine Ar

120g Motor Grader (Decatur)-Machine Ar

980 Wheel Loader-Machine Ar

320 Hydraulic Excavators-Machine Ar

E200b Hydraulic Excavator-Machine Ar

311 Hydraulic Excavator-Machine Ar

120h Motor Grader (Decatur)-Machine Ar

120b Motor Grader-Machine Ar

930 Wheel Loader-Machine Ar

E110B serial number reference

Locate the ID plate on the machine outer frame. The prefix consists of the first three alphanumeric characters of the serial number or PIN.

Prefix	Identifies	Notes
9HF	Standard configuration	Identified via specific machine record; includes Mitsubishi S4K-T engine (80 HP / 59.66 kW). Year: 1990.

Frequently asked questions

What engine is used in the Caterpillar E110B?

The Caterpillar E110B is powered by a 3114 engine model with a displacement of approximately 268.6 to 269 cu in (4.4 L).

What is the operating weight of this excavator?

The operating weight for the E110B is approximately 25,573.7 lb (11,600 kg), though exact weight varies by configuration and attachments.

What model replaced the E110B?

Specific successor information for the E110B is not documented in the provided technical literature; verify with a dealer for current lineage.

What E110B owners discuss

What are the common hydraulic system issues reported for the E110B?

Users frequently report pressure relief valve trips and fluctuations in hydraulic system pressure. If any function causes a trip, check for blocked lines, worn pump components, or incorrect valve settings. Inspect the relief valve for debris or damage; ensure hydraulic fluid levels and quality are optimal. Additionally, metal debris in the valves can cause unintended boom or bucket movement or joystick control failures. Have your dealer verify hydraulic pressure settings.

What engine models are found in the Caterpillar E110B?

The E110B typically uses a Caterpillar 3114 engine with a displacement of 269 cu in (4,402 cu cm) and net power of 79 hp (59 kW). However, some configurations, specifically gray market machines or certain regional models, may be equipped with a Mitsubishi S4K-T engine.

What should I look for regarding the swing function on an E110B?

If the swing motor loads but there is no movement, the swing brake may be stuck in the engaged position. Inspect the swing brake assembly for mechanical binding or worn components and check hydraulic pressure to the swing motor and the operation of the brake release valve.

What are the typical maintenance challenges for this machine?

Maintenance can be difficult due to limited access to certain components, often requiring significant effort to remove panels. While Caterpillar has a strong reputation for parts availability, some specific components may experience longer delivery times than expected.

What undercarriage and wear patterns are common for the E110B?

Common wear areas include pins, bushings, and bucket links. Regular inspection of the track rollers, idlers, and carrier rollers is necessary. The machine features a 20 in (50 cm) shoe size and a track gauge of 6.6 ft (2 m).

What should I check when buying a used E110B?

Inspect the final drives for signs of failure or recent repairs, as blown final drives are a known issue. Check the condition of the engine head gasket and look for any evidence of electrical issues, such as burned wiring near the fuel tank or fuel pump. Verify the exact serial number prefix to ensure you can source correct parts, as configurations vary.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

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