Case 9040 Excavator – Parts, Specs

Description:

Serial Number Location:

For Case 9040 Excavators (manufactured primarily in the early 1990s), the serial number plate is typically located on the right side of the upper structure just beneath the cab or near the front of the machine along the boom base. Always confirm the serial number before ordering parts—early machines had key differences in hydraulics and electrical systems compared to the B-series.

Key Specifications

Years Manufactured: Early to mid-1990s

Engine Model: Isuzu 6BG1T turbocharged 6-cylinder diesel

Net Horsepower: 140 HP @ 2,200 rpm

Displacement: 408 cu in (6.7 L)

Drive Type: Hydrostatic dual travel motors with planetary final drives

Hydraulic Flow Rate: 2 × 54 gal/min

Hydraulic Pressure: 4,780 psi

Operating Weight: Approx. 48,000 – 49,000 lbs

Maximum Digging Depth: 22 ft

Reach at Ground Level: 32 ft 3 in

Bucket Capacity: 1.0 – 1.5 cubic yards

Travel Speed: 3.4 mph

Dimensions (L×W×H): Approx. 33 ft × 10.6 ft × 10.9 ft

Performance & Design Highlights

High Torque Isuzu Power: The turbocharged 6BG1T engine delivers ample power for trenching, lifting, and heavy digging applications.

Robust Hydraulic System: Twin variable-displacement piston pumps provide simultaneous control of boom, stick, swing, and travel functions.

Heavy-Duty Undercarriage: Reinforced steel construction with sealed rollers and large-diameter idlers designed for maximum durability.

Spacious Operator Cab: Full pilot control system with wide windows, ergonomic joystick layout, and clear sight lines for safe operation.

Attachment Versatility: Pre-installed auxiliary hydraulics accommodate thumbs, compactors, and other powered attachments.

Routine Maintenance

• Engine Oil & Filter: Every 250 hours

• Fuel Filters: Every 250 hours

• Hydraulic Oil & Filters: Replace every 1,000 hours

• Air Filters: Inspect every 100 hours; replace when needed

• Final Drive Oil: Inspect every 100 hours; change every 1,000 hours

• Swing Gear Oil: Change every 1,000 hours

• Track Tension: Adjust weekly using grease fitting

Common Issues & Fixes

Hydraulic Lag or Weakness: Caused by clogged return filter or worn spool valve—replace filter and test hydraulic relief settings.

Boom or Stick Drift: Internal seal wear—rebuild cylinders and check valve stack for bypass leakage.

Travel Motor Hesitation: Due to worn final drive seals or charge pressure loss—rebuild drive motor and inspect planetary assembly.

Swing Bearing Creak or Movement: Inadequate lubrication—grease bearing daily and inspect preload bolt torque.

Fuel Delivery Problems: Common with old or dirty fuel—replace both fuel filters and check fuel lift pump for wear.

Starter Relay or Electrical Faults: Inspect ground points and battery terminals for corrosion—clean and reseat connectors.