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Bobcat BL375 Backhoe Loader Service Manual (SN 571811001-571899999)

Format: PDF (Printable Document)

File Language: English

File Pages: 654

File Size: 21.72 MB (Speed Download Link)

Brand: Bobcat

Model: BL375 Backhoe Loader

Book No: 6901973

Serial No: SN 571811001-571899999

Type of Document: Service Manual

Categories: ,

$ 45

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Bobcat BL375 Backhoe Loader Service Manual (SN 571811001-571899999)

A BL375 backhoe loader spends its life trenching, loading trucks, and doing utility work where downtime kills your day and your margin. The service manual is what you pull when a warning light is on, a function is weak, or something's apart on the bench and you need to know exactly how it goes back together. Around my shop, this is the book that keeps a machine turning around on schedule instead of sitting dead in the yard.

What this manual helps you do

  • Diagnose hydraulic and steering issues, then check pressures and flows against the correct specs for the BL375.
  • Trace and troubleshoot electrical faults using model-correct wiring diagrams and connector callouts.
  • Follow step-by-step teardown and reassembly of loader, backhoe, and driveline components so you don't guess on order or orientation.
  • Set, verify, and adjust linkages, brakes, and control valves after repairs so the machine operates smoothly and safely.
  • Replace seals, bearings, and wear parts in cylinders, pumps, and axles with the right disassembly and reassembly procedures.

Who this is for

This manual is for anyone maintaining or repairing a Bobcat BL375 in the SN 571811001-571899999 range: small contractors, owner-operators, rental fleets, and shop or field techs. If you only need to learn controls, daily checks, or safety basics, you want the operator's handbook instead, not this service manual.

FAQ

Q: Is this a searchable PDF, and can I read the wiring diagrams clearly on a laptop or tablet?

A: Yes, it's a PDF you can search by keyword, and the wiring diagrams are laid out so you can zoom in and read pin labels.

Q: Does this cover my exact BL375 machine?

A: If your serial number falls between 571811001 and 571899999, this is the correct service manual for your loader.

Q: Is this the right thing if I'm planning engine and hydraulic repairs?

A: Yes, this is the workshop-level service manual you want for real teardown, diagnostics, and reassembly work.

Bottom line: If your BL375's serial number is in that range and you're doing your own repairs, this is the right manual. If you're just running the machine, it's overkill.

📘 Show Index

Table of Contents:

  • ALPHABETICAL INDEX
  • CONTENTS
    • FOREWORD
    • SAFETY INSTRUCTIONS FOR INGERSOLL-RAND LOADER BACKHOE AND ATTACHMENTS
    • SAFE OPERATION IS THE OPERATOR’S RESPONSIBILITY
    • FIRE PREVENTION
    • SERIAL NUMBER LOCATION
      • Loader Backhoe Serial Number
      • Engine Serial Number
    • DELIVERY REPORT
    • INGERSOLL-RAND LOADER IDENTIFICATION
  • SAFETY AND MAINTENANCE
    • LIFTING AND BLOCKING THE LOADER BACKHOE
      • Procedure
    • LIFT ARM SUPPORT DEVICE
      • Installing The Lift Arm Support Device
      • Removing The Lift Arm Support Device
    • ENGINE COVER
    • TRANSPORTING THE LOADER BACKHOE
      • Procedure
    • TOWING THE LOADER BACKHOE
      • Procedure
    • AXLE TOE-IN
      • Adjustment
    • SERVICE SCHEDULE
      • Chart
    • AIR CLEANER SERVICE
      • Replacing Filter Element
    • ENGINE COOLING SYSTEM
      • Coolant Replacement
    • FUEL SYSTEM
      • Fuel Specifications
      • Filling The Fuel Tank
      • Fuel Filter
    • ENGINE LUBRICATION SYSTEM
      • Checking Engine Oil
      • Oil Chart
      • Replacing Oil And Filter
    • HYDRAULIC/HYDROSTATIC SYSTEM
      • Checking And Adding Fluid
      • Cleaning The Cooler
      • Replacing Hydraulic/Hydrostatic Filter
      • Replacing Hydraulic Fluid
    • REAR AXLE
      • Checking Oil Level
      • Draining Oil
    • FRONT AXLE
      • Checking Oil Level
      • Draining Oil
    • BACKHOE BOOM LOCK
      • Disengaging The Boom Lock
      • Engaging Boom Lock
    • BOB-TACH HAND LEVER
      • Inspection And Maintenance
    • ALTERNATOR BELT
      • Adjusting The Alternator Belt
    • LUBRICATING THE LOADER BACKHOE
    • TIRE MAINTENANCE
      • Wheel Nuts
      • Mounting
      • Tire Pressure
  • HYDRAULIC SYSTEM
    • HYDRAULIC/HYDROSTATIC SCHEMATICS
    • HYDRAULIC SYSTEM INFORMATION
      • Troubleshooting
      • Description
    • ARM CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • BOOM CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • SWING CYLINDER (WITHOUT SIDESHIFT)
      • Removal And Installation
      • Bushing Removal And Installation
      • Parts Identification (Left Side)
      • Parts Identification (Right Side)
      • Disassembly
      • Assembly
    • SWING CYLINDER (WITH SIDESHIFT)
      • Not Available At Time Of Printing
    • BUCKET CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • STABILIZER CYLINDER (WITHOUT SIDESHIFT)
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • STABILIZER CYLINDER (WITH SIDESHIFT)
      • Not Available At Time Of Printing
    • TILT CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification (Left Side)
      • Parts Identification (Right Side)
      • Disassembly
      • Assembly
    • LIFT CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification (Left Side)
      • Parts Identification (Right Side)
      • Disassembly
      • Assembly
    • STEERING CYLINDER (FRONT)
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inspection
    • STEERING CYLINDER (REAR)
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inspection
    • MAIN RELIEF VALVE
      • Testing The Main Relief Valve
      • Adjustment
    • PORT RELIEF VALVE (BACKHOE CONTROL VALVE)
      • Testing And Adjusting (Arm Control)
      • Testing And Adjusting (Boom Control)
      • Testing And Adjusting (Boom Swing Control)
    • LOADER CONTROL VALVE
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inlet/Outlet Valve Section
      • Lift Arm Valve Section
      • Tilt Valve Section
      • Auxiliary Valve Section (Front)
      • Auxiliary Valve Section (Rear)
    • BACKHOE CONTROL VALVE
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inlet/Outlet Valve Section
      • Arm Valve Section
      • Tilt Valve Section
      • Right Stabilizer Valve Section
      • Left Stabilizer Valve Section
      • Boom Valve Section
      • Boom Swing Valve Section
      • Outlet Valve Section
    • HYDRAULIC FLUID RESERVOIR
      • Removal And Installation
      • Filter Removal And Installation
    • HYDRAULIC FILTER HOUSING
      • Removal And Installation
      • Disassembly
      • Assembly
    • GEAR PUMP
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inspection
    • STEERING PUMP
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
    • MASTER CYLINDER
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • STEERING VALVE
      • Removal And Installation
      • Adjustment
  • HYDROSTATIC SYSTEM
    • HYDROSTATIC SYSTEM INFORMATION
      • Troubleshooting Chart
      • Replenishing Valve Function
    • OIL COOLER
      • Disassembly
      • Inspection
      • Assembly
    • HYDROSTATIC DRIVE MOTOR
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
    • HYDROSTATIC PUMP
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
    • HYDROSTATIC TESTING
      • Pump Adjustment
      • Operation Test – Creep Test:
      • Operation Test – Torque Limiter Test:
  • DRIVE SYSTEM
    • TROUBLESHOOTING
      • Chart
    • PARKING BRAKE
      • Lever Removal And Installation
      • Cable Removal And Installation
      • Adjustment
    • PARKING BRAKE HOUSING
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • SERVICE BRAKE
      • Description
      • Bleeding The Brake Circuit
    • REAR AXLE
      • Removal
      • Installation
    • FRONT AXLE
      • Removal
      • Installation
      • Installation
      • Axle Pivot Bushing Removal And Installation
    • DRIVESHAFT
      • Removal And Installation
    • DROP BOX
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
    • BRAKE PEDAL ASSEMBLY
      • Removal And Installation
  • MAIN FRAME
    • OPERATOR CANOPY
      • Removal And Installation
    • ENCLOSED CAB
      • Not Available At Time Of Printing
    • OPERATOR SEAT
      • Removal And Installation
    • FLOOR PANELS
      • Front Panel Removal And Installation
      • Rear Panel Removal And Installation
      • Front Right Panel Removal And Installation
      • Front Left Panel Removal And Installation
    • GRILL
      • Removal And Installation
    • GRILL FRAME
      • Removal And Installation
    • ENGINE SIDE COVERS
      • Removal And Installation
    • FENDER
      • Removal And Installation
    • ENGINE COVER
      • Removal And Installation
    • FUEL TANK
      • Removal And Installation
      • Screen Removal And Installation
    • LIFT ARMS
      • Removal And Installation
    • BOB-TACH
      • Removal And Installation
      • Bob-Tach Lever And Wedge
      • Pivot Pin Bushing Removal And Installation
    • ARM
      • Removal And Installation
      • Arm Pivot Bushing Removal And Installation
    • BOOM (WITHOUT SIDESHIFT)
      • Removal And Installation
    • BOOM (WITH SIDESHIFT)
      • Not Available At Time Of Printing
    • SWING FRAME (WITHOUT SIDESHIFT)
      • Removal And Installation
      • Bushing Removal And Installation
    • SWING FRAME (WITH SIDESHIFT)
      • Not Available At Time Of Printing
    • X-CHANGE™
      • Removal And Installation
    • BUCKET
      • Backhoe Bucket Teeth Removal And Installation
      • Loader Bucket Teeth Removal And Installation
    • LIFT ARM STABILIZER
      • Removal And Installation
    • CENTER FLOOR PANEL
      • Removal And Installation
    • STABILIZER (WITHOUT SIDESHIFT)
      • Removal And Installation
    • STABILIZER (WITH SIDESHIFT)
      • Not Available At Time Of Printing
    • FRONT AXLE PIVOT FRAME
      • Not Available At Time Of Printing
  • ELECTRICAL SYSTEM AND ANALYSIS
    • ELECTRICAL SCHEMATIC
    • ELECTRICAL SYSTEM INFORMATION
      • Troubleshooting Chart
      • Description
      • Fuse Location
      • Relay Location
    • BATTERY
      • Removal And Installation
      • Servicing The Electrical System
      • Using A Booster Battery (Jump Starting)
    • ALTERNATOR
      • Adjusting The Alternator Belt
      • Description
      • Tests
      • Alternator Output Test
      • Full Field Test
      • Alternator Regulator Test
      • Alternator Regulator Test With Voltmeter
      • Removal And Installation
      • Parts Identification
      • Pulley Removal And Installation
      • Disassembly And Assembly
      • Rotor Continuity Test
      • Stator Continuity Test
      • Rectifier Continuity (Diode) Test
      • Brush Length
    • STARTER
      • Removal And Installation
      • Checking The Starter In The Loader
      • Parts Identification
      • Disassembly
      • Inspection And Repair
      • No Load Test
      • Assembly
    • FRONT LIGHTS
      • Bulb Removal And Installation
      • Housing Removal And Installation
    • TURN INDICATOR LIGHTS (FRONT)
      • Bulb Removal And Installation
    • TURN INDICATOR LIGHTS (REAR)
      • Bulb Removal And Installation
    • CAB LIGHTS
      • Bulb Removal And Installation
      • Housing Removal And Installation
    • FUEL LEVEL SENDER
      • Removal And Installation
    • INSTRUMENT PANEL
      • Removal And Installation
  • ENGINE SERVICE
    • TROUBLESHOOTING
      • Chart
    • ENGINE SPEED CONTROL
      • Removal And Installation
      • Cable Removal And Installation
    • TRAVEL PEDAL
      • Removal And Installation
    • MUFFLER
      • Removal And Installation
    • AIR CLEANER
      • Removal And Installation
    • RADIATOR
      • Removal And Installation
    • ENGINE COMPONENTS AND TESTING
      • Valve Clearance Adjustment
      • Engine Compression Checking
      • Fuel Shut-Off Solenoid Removal And Installation
      • Checking Fuel Injection Pump
      • Fuel Injection Pump Removal And Installation
      • Fuel Injection Pump Timing
      • Fuel Injector Nozzles
      • Fuel Injector Nozzles Removal And Installation
      • Fuel Injector Nozzles Check
    • ENGINE
      • Removal And Installation
      • Mount Replacement
    • RECONDITIONING THE ENGINE
      • Cylinder Head Removal And Installation
      • Cylinder Head Disassembly And Assembly
      • Cylinder Head Servicing
      • Cylinder Head Top Clearance
      • Valve Guide Checking
      • Reconditioning The Valve And Valve Seat
      • Valve Spring
      • Rocker Arm And Shaft Checking
      • Timing Gearcase Cover Removal And Installation
      • Idler Gear And Camshaft Removal And Installation
      • Camshaft Servicing
      • Idler Gear And Shaft Servicing
      • Timing Gears Checking Backlash
      • Fuel Camshaft Removal And Installation
      • Fuel Camshaft Governor
      • Crankshaft Gear Removal And Installation
      • Oil Pump Removal And Installation
      • Oil Pump Service
      • Checking Engine Oil Pressure
      • Oil Pump Relief Valve
      • Piston And Connecting Rod Removal And Installation
      • Piston And Connecting Rod Servicing
      • Connecting Rod Alignment
      • Crankshaft And Bearings Removal And Installation
      • Crankshaft And Bearings, Servicing
      • Cylinder Bore, Checking
      • Water Pump Removal And Installation
      • Water Pump Disassembly And Assembly
    • FLYWHEEL HOUSING
      • Removal And Installation
    • FLYWHEEL
      • Removal And Installation
      • Ring Gear Removal And Installation
    • DRIVE COUPLER
      • Removal And Installation
    • TURBOCHARGER
      • Not Available At Time Of Printing
  • SPECIFICATIONS
    • LOADER SPECIFICATIONS
      • Loader Backhoe Dimensions
      • Performance
      • Controls
      • Engine
      • Hydraulic System
      • Electrical
      • Drive System
      • Capacities
      • Tires
    • ENGINE SPECIFICATIONS
      • Fuel Injection Nozzles
      • Fuel Injection Pump
      • Cylinder Head
      • Valves
      • Valve Springs
      • Valve Timing
      • Rocker Arms
      • Camshaft
      • Cylinders
      • Tappet
      • Piston Rings
      • Pistons
      • Crankshaft
      • Oil Pump
      • Thermostat
      • Connecting Rods
      • Timing Gear
      • Engine Bolt Torque
      • Grinding Specifications for the Crankshaft
    • LOADER BACKHOE TORQUE
      • Specifications
    • TORQUE SPECIFICATIONS FOR BOLTS
      • Torque For General Metric Bolts
    • HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS
      • Specifications
    • CONVERSIONS
      • Decimal And Millimeter Equivalents
      • U.S. To Metric Conversion
      • PARTS MANAGER
      • SERVICE MANAGER X
      • SALES MANAGER
      • Revision No: BL-370/BL-375-1
      • Date: 22 January 2002
      • Product: Bobcat Loader Backhoe
      • Model: BL-370/BL-375
      • Manual No: 6901973 (12-02)
      • PARTS MANAGER
      • SERVICE MANAGER X
      • SALES MANAGER
      • Revision No: BL-370/BL-375-3
      • Date: 1 June 2003
      • Product: Loader Backhoe
      • Model: BL-370/BL-375
      • Manual No: 6901973 (12-02)
      • PARTS MANAGER
      • SERVICE MANAGER X
      • SALES MANAGER
      • Revision No: BL-370/BL-375-3
      • Date: 1 June 2003
      • Product: Loader Backhoe
      • Model: BL-370/BL-375
      • Manual No: 6901973 (12-02)
      • PARTS MANAGER
      • SERVICE MANAGER X
      • SALES MANAGER
      • Revision No: BL-370/BL-375-4
      • Date: 1 January 2004
      • Product: Loader Backhoe
      • Model: BL-370/BL-375
      • Manual No: 6901973 (12-02)
  • SERVICE MANUAL REVISIONS
    • BL-370/BL-375-1
    • BL-370/BL-375-2
    • BL-370/BL-375-3
    • BL-370/BL-375-4
    • BL-370/BL-375-5

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