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Case 688 Crawler Excavator Service Manual 7-32651 - PDF DOWNLOAD

Case 688 Crawler Excavator Service Manual 7-32651 – PDF DOWNLOAD

Name: Case 688 Crawler Excavator Service Manual 7-32651 - PDF DOWNLOAD
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Case 688 Crawler Excavator Service Manual 7-32651 – PDF DOWNLOAD

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Description

Description

Case 688 Crawler Excavator Service Manual 7-32651 – PDF DOWNLOAD

DESCRIPTION:

Case 688 Crawler Excavator Service Manual 7-32651 – PDF DOWNLOAD

Cleaning :

Clean all metal parts except bearings, in a suitable cleaning solvent or by steam cleaning. Do not use caustic soda for steam cleaning. After cleaning, dry and put oil on all parts. Clean oil passages with compressed air. Clean bearings in a suitable cleaning solvent, dry the bearings completely and put oil on the bearings.

Inspection:

Check all parts when the parts are disassembled. Replace all parts that have wear or damage. Small scoring or grooves can be removed with a hone or crocus cloth. Complete a visual inspection for indications of wear, pitting and the replacement of parts necessary to prevent early failures.

Bearings :

Check bearings for easy action. If bearings have a loose fit or rough action replace the bearing. Wash bearings with a suitable cleaning solvent and permit to air dry. DO NOT DRY BEARINGS WITH COMPRESSED AIR.

Needle :

Bearings Before you press needle bearings in a bore always remove any metal protrusions in the bore or edge of the bore. Before you press bearings into position put petroleum jelly on the inside and outside diameter of the bearings.

Gears :

Check all gears for wear and damage. Replace gears that have wear or damage.

Oil Seals, O-Rings and Gaskets :

Always install new oil seals, O-rings and gaskets. Put petroleum jelly on seals and O-rings.

Shafts :

Check all shafts that have wear or damage. Check the bearing and oil seal surfaces of the shafts for damage.

Service Parts :

Always install genuine Case service parts. When ordering refer to the Parts Catalog for the correct part number of the genuine Case replacement items. Failures due to the use of other than genuine Case replacement parts are not covered by warranty.

Lubrication:

Only use the oils and lubricants specified in the Operator’s or Service Manuals. Failures due to the use of non-specified oils and lubricants are not covered by warranty.

TABLE OF CONTENTS:

Case 688 Crawler Excavator Service Manual 7-32651 – PDF DOWNLOAD

1 GENERAL
Sectional Index
688 Crawler Excavator
Table of Contents
SECTION NO.
Safety, General Information and Torque Specifications ……………………. 1001
Specifications ……………………………………………………………………………… 1002
2 ENGINE
Sectional Index
Engine Removal and Installation ……………………………………………………… 2000
Radiator and Oil Cooler ……………………………………………………………….. 2001
Cylinder Head and Valve Train ……………………………………………………… 2415
Cylinder Block …………………………………………………………………………….. 2425
Lubrication System ………………………………………………………………………. 2445
Cooling System …………………………………………………………………………… 2455
Turbocharger ………………………………………………………………………………. 2465
Turbocharger Failure Analysis ………………………………………………………. 2565
3 FUEL SYSTEM
Sectional Index
Fuel System and Filters ……………………………………………………………….. 341 O
Fuel Injection Pump and Drive Gear ………………………………………………. 3412
Fuel Injectors ………………………………………………………………………………. 3413
4 ELECTRICAL
Sectional Index
Electrical Schematics and Troubleshooting ……………………………………. 4001
Battery Testing, Maintainance and Booster Battery Connections ………. 4002
Starter Motor ……………………………………………………………………………….. 4003
Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4004
5 TRACK
Sectional Index
Tracks, Rollers and Idlers …………………………………………………………….. 5002
Track Troubleshooting ……………………………………………………………………. 5502
6 POWER TRAIN
Sectional Index
Drive Motor and Final Drive Transmission ………………………………………. 6002
Swing Motor and Reduction Gears ………………………………………………….. 6003
8 HYDRAULICS
Sectional Index
Hydraulic Troubleshooting ……………………………………………………………. 8001
Low Pressure Pump ……………………………………………………………………….. 8002
High Pressure Pump and Regulator …………………………………………………. 8003
Attatchment Valve Bank ………………………………………………………………….. 8004
Drive Control Valve …………………………………………………………………………. 8005
Option Control Valve ………………………………………………………………………. 8006
Counter Rotation Valve …………………………………………………………………. 8007
Swing Brake Release Valve ………………………………………………………….. 8008
Swing Control Valve …………………………………………………………………….. 8009
Anti-Surge Valve ………………………………………………………………………….. 801 O
Hydraulic Swivel ………………………………………………………………………….. 8011
Drive Speed Limiter ……………………………………………………………………… 8012
Drive Brake Release Valve ………………………………………………………………. 8013
Hand and Foot Valves …………………………………………………………………. 8015
Hydraulic Oil Tank ……………………………………………………………………….. 8016
Attachment Cylinders ……………………………………………………………………… 8018
Hydraulic Pick Hammer Control Valve ………………………………………………. 8222
9 MOUNTED EQUIPMENT
Sectional Index
Upperstructure and Turntable Bearing ……………………………………………… 9001
Boom, Dipper and Bucket ………………………………………………………………. 9002
Servicing the Cab ………………………………………………………………………… 9004

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CASE 688 CRAWLER EXCAVATOR SERVICE MANUAL 7-32651 – PDF DOWNLOAD:

PLEASE NOTE:

This is the SAME exact manual used by your dealers to fix your vehicle.
The same can be yours in the next 2-3 mins as you will be directed to the download page immediately after paying for the manual.
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Case 688 Crawler Excavator Service Manual 7-32651 – PDF DOWNLOAD

Case 688 Crawler Excavator Service Manual 7-32651 – PDF DOWNLOAD

Description

Case 688 Crawler Excavator Service Manual 7-32651 – PDF DOWNLOAD

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