1999 Case Excavator 788 / 788 Plus / 988 / 988 Plus Service Manual

Official 1999 Case service manual detailing repair procedures for the 788, 788 Plus, 988, and 988 Plus hydraulic excavators. Ref: 7-80071GB

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Case Models Covered & Key Technical Specifications

Integrated Overhaul Workshop Manual: Case Excavator Genuine 788, 788 Plus, 988 and 988 Plus Manual (1999) Blueprint-Vault Model-Portfolio: 788 (1999) / 788 Plus (1999) / 988 (1999) / 988 Plus (1999) // System-Coverage: Crawler Excavators / Hydraulic & Electrical Schematics // Technical-Benchmarks: 364 Pages

  • Reference Data: 364 pages provide the complete technical resolution data Mapping.
  • Specific Repair Coverage: For comprehensive coverage, 102 mm defines the bore size Specification Configuration.
  • Essential Component Specs: The engine capacity is 3920 cm3 -- signifies the required displacement Threshold.
  • Advanced System Details: The hydraulic system requires 184 L for the 788 model Range.
  • Core Operational Performance: Maximum travel speed reaches 3.6 kph Parameters.
  • Fundamental Specification Data: The starter system uses 2 x 12 volt batteries Baseline.
Technical Specifications
keyboard_arrow_down
Document Number / Seller:
31327 / Matthew Henry
File Size:
17.96 MB
File Type:
PDF
Language:
English
Pages:
364
Printable:
Yes
Category:
Excavator
Last updated / verified
Mar 5, 2026

Case Manual Features & Content Preview

Integrated Overhaul Workshop Manual: Case Excavator Genuine 788, 788 Plus, 988 and 988 Plus Manual (1999) Blueprint-Vault

Model-Portfolio: 788 (1999) / 788 Plus (1999) / 988 (1999) / 988 Plus (1999) // System-Coverage: Crawler Excavators / Hydraulic & Electrical Schematics // Technical-Benchmarks: 364 Pages

Service sections detail:

  • Engine rebuild procedures are documented for the power unit.
  • Drivetrain specifications are addressed in the transmission section.
  • Reassembly procedures are specified for various hydraulic components.
  • Service intervals are documented for routine maintenance.
  • Component locations are identified for easy reference.
Assessment-Parameter Technical-Path Logic
Engine Specifications Make and Type CASE 4T 390 / 4TA 390
Hydraulic System Working Pressure 350 bar
Weights Machine (788) 13240 kg
Travel Speeds (788) Single Speed 0-3.6 kph
Electrical System Voltage 24 Volts negative earth
Capacities Fuel Tank 249 L

Engine rebuild procedures are documented for the various Case excavator models, including disassembly and reassembly. Drivetrain specifications are addressed in the transmission component oil and grease sections. Reassembly procedures are specified for hydraulic and electrical systems. Service intervals are documented for engine oil, hydraulic fluid, and fuel. Component locations are identified for critical parts such as the instrument panel and operator's seat. This manual documents torque specifications for various fasteners to ensure proper cyclic stress resistance.

Manual FAQ, Purchase & Download Details

Is the engine system for the 788 and 988 series covered in this manual? keyboard_arrow_down

Document contains comprehensive engine specifications, including bore and stroke configurations, engine oil capacities, and cooling system details for the 788, 788 Plus, 988, and 988 Plus excavator models.

Can I find tightening specifications and torque wrench usage information in this document? keyboard_arrow_down

Manual includes a dedicated section on hardware tightening orders and standard screw torque specifications categorized by diameter, thread size, and steel grade. It also illustrates the correct usage of torque wrenches to ensure proper application.

Does this publication include hydraulic and electrical schematics for the 1999 Case excavator series? keyboard_arrow_down

Manual provides extensive coverage of hydraulic and electrical systems, listing various schematics and troubleshooting references tailored to both crawler and wheeled excavator configurations.

Are specific fluid capacity and lubrication type references included for the crawler excavators? keyboard_arrow_down

Specifications section provides detailed tables for various fluids and lubricants, including hydraulic fluid, engine oil, and grease grades based on ambient temperature ranges. It also outlines the required oil viscosity ranges and fuel standards to support machine maintenance. These tables are grounded in the official technical documentation published for the 788 and 988 model series.

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