Case 9040B Excavator – Parts, Specs

Description:

Serial Number Location:

For Case 9040B Excavators (produced between 1997 and the early 2000s), the serial number plate is typically located on the right side of the upper structure, below the cab or near the boom base along the front chassis. Always confirm the serial number when ordering parts, as the “B” series introduced updated hydraulics, electronics, and cab layouts compared to the earlier 9040.

Key Specifications

Years Manufactured: 1997 – Early 2000s

Engine Model: Isuzu 6BG1T turbocharged 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. 49,000 – 50,000 lbs

Maximum Digging Depth: 22 ft 4 in

Reach at Ground Level: 32 ft 5 in

Bucket Capacity: 1.0 – 1.5 cubic yards

Travel Speed: 3.4 mph

Dimensions (L×W×H): Approx. 33.1 ft × 10.6 ft × 10.9 ft

Performance & Design Highlights

Enhanced B-Series Hydraulics: Dual variable-displacement pumps with smoother joystick pilot controls provide better flow regulation and multitasking capability.

Reliable Isuzu Turbo Power: High-torque, fuel-efficient diesel engine built for heavy-duty excavation and long operating hours.

Upgraded Cab Comfort: Includes improved insulation, a mechanical suspension seat, and ergonomic joystick placement for reduced fatigue.

Heavy-Duty Undercarriage: Features sealed and lubricated rollers, reinforced frame, and high ground clearance for rugged terrain.

Auxiliary Hydraulics-Ready: Factory-equipped ports support thumbs, breakers, compactors, and other powered attachments.

Routine Maintenance

• Engine Oil & Filter: Change every 250 hours

• Fuel Filters: Replace every 250 hours

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

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

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

• Swing Gear Oil: Change every 1,000 hours

• Track Tension: Check weekly; adjust with grease cylinder

Common Issues & Fixes

Hydraulic Delay or Noise: Often due to air in the system or clogged return filter—bleed hydraulics and replace filters.

Boom or Arm Drift: Worn cylinder seals or leaking valve—repack cylinders and test control valve spools.

Travel Motor Weakness: Loss of charge pressure or bypassing seals—rebuild final drive motor and inspect case drain flow.

Swing Bearing Play or Noise: Grease bearing daily; check bolt torque and bearing preload for signs of wear.

Starting Trouble or Power Loss: Inspect fuel lift pump, lines, and electrical grounds—replace corroded terminals or weak batteries.

Overheating Hydraulic Oil: Often caused by blocked cooler fins or overworked relief valves—clean cooling stack and reset pressure settings.