Table of Contents
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788/988 - 788/988 Plus Wheeled Excavators
DIVISION/SECTION
1
GENERAL INFORMATION
Safety, general and torque settings .................................................................1001
Specifications (Crawler excavators).................................................................1002
Specifications (Wheeled excavators)...............................................................1002
2
ENGINE
Engine removal and installation (788 - 988 - 988 Plus ....................................2002
Engine removal and installation (788 Plus)......................................................2002
Radiator and oil cooler .....................................................................................2003
Engine specifications .......................................................................................2401
Cylinder head and valve assembly ..................................................................2415
Engine block ....................................................................................................2425
Lubrication system ...........................................................................................2445
Cooling system ................................................................................................2455
Turbocharger....................................................................................................2465
Turbocharger failure analysis...........................................................................2565
3
FUEL SYSTEM
Fuel system and filter.......................................................................................3410
CAV injection pump..........................................................................................3411
BOSCH injection pump ....................................................................................3412
Fuel injector .....................................................................................................3412
BOSCH ANEROID fuel injection pump............................................................3416
4
ELECTRICAL SYSTEM
Electrical schematic (Crawler excavators) - (before November 1999).............4001
Electrical schematic (Wheeled excavators) - (before November 1999) ...........4001
Electrical schematic (Crawler excavators) - (November 1999 and after).........4001
Electrical schematic (Wheeled excavators) - (November 1999 and after) .......4001
Electronic system and troubleshooting (Crawler excavators) ..........................4002
Electronic system and troubleshooting (Wheeled excavators) ........................4002
Starter motor ....................................................................................................4003
Alternator .........................................................................................................4004
Powersensor diagnostic tool ............................................................................4010
5
UNDERCARRIAGE
Track group (Crawler excavators)....................................................................5002
6
DRIVE TRAIN
Travel reduction gear and brake (Crawler excavators) ....................................6002
Swing reduction gear and brake (788 - 788 Plus)............................................6003
Swing reduction gear and brake (988) .............................................................6003
Swing reduction gear and brake (988 Plus).....................................................6003
Front axle and service brake (Wheeled excavators)........................................6004
Rear axle and service brake (Wheeled excavators) ........................................6005
Gearbox and parking brake (Wheeled excavators) .........................................6008
Twin wheels (Wheeled excavators) .................................................................6020
* * Consult the engine Service Manual.
Case
788/988 - 788/988 Plus Crawler Excavators
Table of Contents
SECTION N°
Cre 7-58655GB
REFERENCE N°
7-56942GB
7-80071GB
7-80062GB
7-58681GB
7-26560GB
7-80621GB
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
7-80040GB
7-80021GB
7-26570GB
7-26540GB
7-80031GB
7-80051GB
7-58691GB
7-58701GB
7-79991GB
7-58711GB
7-80661GB
7-80671GB
7-58731GB
7-84141GB
7-80681GB
7-80691GB
7-80701GB
7-26170GB
Copyright 2000 Case France
Printed in France
March 2000
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Table of Contents
Related Manuals for Case 988
Summarization of Contents
GENERAL INFORMATION
CLEANING
Instructions for cleaning machine parts, including bearings and hydraulic lines.
INSPECTION
Guidelines for inspecting parts for wear or damage during disassembly.
BEARINGS
Procedures for checking bearing rotation and replacement criteria.
NEEDLE BEARINGS
Steps for preparing and mounting needle bearings into a bore.
GEARS
Guidance on checking gears for wear or damage and replacement.
SEAL RINGS, O-RINGS, GASKETS
Recommendations for using new seals and lubricating O-rings and gaskets.
SHAFTS
Checks for wear or damage on shafts, especially in bearing contact areas.
SPARE PARTS
Emphasizes using genuine CASE spare parts and warranty implications.
LUBRICATION
Specifies using only approved oils and lubricants as per manuals.
CORRECT USE OF TORQUE WRENCHES
CORRECT USE
Step-by-step instructions and illustrations for proper torque wrench operation.
HARDWARE TIGHTENING ORDER
INITIAL TORQUE
Illustrates initial torque application sequence, including cross/diagonal patterns.
FINAL TORQUE
Details the procedure for applying final torque in a clockwise order.
STANDARD SCREW A TORQUE SPECIFICATIONS
Correct screw identification
Provides guidance on identifying screws and bolts for torque specification.
PLASTIC PLUG AND CAP REFERENCE CHART
Tapped orifices and connectors with tightening nuts = screw-type plugs
Reference chart for tapped orifices and screw-type plugs.
Unions = Screw-type plugs
Reference chart for unions with screw-type plugs.
S.A.E tube or hose collars = external plugs
Reference chart for SAE tube/hose collars as external plugs.
S.A.E orifices = caps for installation into tapped fitting orifices
Reference chart for SAE caps for tapped fitting orifices.
FLUIDS AND LUBRICANTS
Hydraulic fluid
Specifies CASE hydraulic fluid types for different climates and specifications.
Grease
Details types of grease suitable for temperate/hot and cold climates.
Transmission component oil
Recommends EP oil for transmission components, specifying API GL5 80W90 or ISO VG 150.
Engine oil
Oil viscosity/Oil range
Chart showing recommended engine oil viscosity grades for different temperature ranges.
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