CASE Construction 688 Excavator before PIN # 11601 Crawler Excavator Service Manual 8-66052 (Replaces 8-66051) English
Brand: CASE Construction Equipment
Product Range: Crawler Excavator
Publication Type: Service Manual
Equipment Model: 688 Excavator
Serial Number: before PIN # 11601
Publication Number: 8-66052 (Replaces 8-66051)
Issued: Printed in England Issued February 1991
Language: English
Pages: 769
File Format: PDF Document
Additional Information: This manual encompasses engine maintenance and repair.
Introduction
This service manual has been prepared with the latest service information available. Troubleshooting, removal, disassembly, inspection and installation procedures, and complete specifications and tightening references can be found in most sections. Some sections have drawings but no written procedure because the job is so easily done. This service manual is one of the most important tools available to the service technician.
A Table of Contents is in the front of this manual. The Table of Contents shows the main divisions and the sections that are in each division. The individual sections also have a Table of Contents.
This manual is written in C.A.S.E. (Clear and Simple English). C.A.S.E. is easier to read than "regular" English because C.A.S.E. uses a small number of common words and has special rules for writing.
Table of Contents
1. GENERAL
Safety Rules, General Information and Torque Specifications
General Engine Specifications
Detailed Engine Specifications
General Machine Specifications
Maintenance and Lubrication
2. ENGINE
Engine Removal and Installation and Radiator Removal and lnstallation
Engine Accessories
Cylinder Head and Valve Train
Cylinder Block, Pistons, Rods, Camshaft, Main Bearings, Oil Seals, and Flywheel
Lubrication System
Cooling System
Turbocharger
Turbocharger Failure Analysis
3. FUEL SYSTEM
Fuel Lines, Fuel Tank, and Engine Controls
Fuel System and Filters
Fuel Injection Pump and Drive Gear
Fuel Injectors
4. ELECTRICAL
Removal and Installation of Electrical Components
Electrical Specifications and Troubleshooting
Electrical Schematic
Batteries
Starter and Starter Solenoid
24 Volt Alternator
5. TRACK
Removal and Installation of Track Components
Troubleshooting
Track Chain and Shoes
Track Rollers, Idler, and Sprocket
6. POWER TRAIN
Removal and Installation of Power Train Components
Maintenance
Drive and Swing Motor
Final Drive Transmission
Swing Transmission
8. HYDRAULICS
Removal and Installation of Hydraulic Components
Maintenance and Service
Specifications and Troubleshooting
High Pressure Pump
Low Pressure Hydraulic Pump
Attachment Control Valve
Drive Control Valve
Control Valve for Options
Solenoid Control Valve and Swing Brake Release Valve
Swing Control Valve
Hydraulic Swivel
Hand Control Valve
Foot Control Valve
Hydraulic Hammer Control Valve
Variator
Selector Block
Cylinders
9. MOUNTED EQUIPMENT
Boom, Arm, and Tool
Turntable Bearing and Related Parts
SCHEMATICS IN REAR POCKET
Electrical Schematics
Location Schematics (Left)
Location Schematics (Right)
Hydraulic Schematics