Complete workshop & service manual with electrical wiring diagrams for Challenger 680B Combine. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Challenger 680B Combine service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

FILELIST:1.1 G PDF
79033147B - Challenger 660B Combine Repair Time Schedule.pdf
79033165B - Challenger 680B Combine Repair Time Schedule (SN HUC81 01 and Up, SN HUC8E1 01 and Up).pdf
79032968A - Challenger 680B Rotary Combine (SN HUC8101 and LATER) Service Manual; 2,432 pages
00 - TABLE OF CONTENT.pdf
01 - General Information.pdf
02 - Specifications.pdf
03 - Engine-Drives and Cooling and Fuel.pdf
04 - Material Handling.pdf
05 - Material Discharge.pdf
06 - Rear Axle.pdf
07 - Threshing and Separating.pdf
08 - Front Axle.pdf
09 - Hydraulics.pdf
10 - Electrical.pdf
11 - Electronics.pdf
12 - Cab and HVAC.pdf
13 - Grain Header.pdf
14 - Corn Header.pdf
15 - Reserved.pdf
79024357A - Challenger 680B Combine Service Manual.pdf; 2,374 pages
79024358A - Challenger 680B Rotary Combine Service Manual.pdf 2,378 pages
00 - TABLE OF CONTENT.pdf
01 - General Information.pdf
02 - Specifications.pdf
03 - Engine - Drives and Cooling and Fuel.pdf
04 - Material Handling.pdf
05 - Material Discharge.pdf
06 - Rear Axle.pdf
07 - Threshing and Separating.pdf
08 - Front Axle.pdf
09 - Hydraulics.pdf
10 - Electrical.pdf
11 - Electronics.pdf
12 - Cab and HVAC.pdf
13 - Grain Header.pdf
14 - Corn Header Service Manual Insert.pdf
15 - Reserved.pdf

EXCERPT:
SERVICE MANUAL
79024357 A Rev.
01 - General Information
Contents
GENERAL INFORMATION
Safety Alert Symbol ... 01-1
Signal Words ..... 01-1
Travel On Public Roads ..... 01-8
Rear Hook .. 01-9
Header Lift Cylinder Stop ..... 01-10
Safety Signs ..... 01-11
Shield Latches ..... 01-27
How A Combine Works .... 01-28
Cutting and Feeding .. 01-28
Threshing and Separating ..... 01-29
Cleaning .... 01-29
Combine Identification ..... 01-30
Machine Serial Number ..... 01-30
Engine Serial Number ... 01-30
Transmission Serial Number ..... 01-30
Final Drive Serial Number ..... 01-31
Headers ... 01-31
Diesel Fuels ..... 01-32
Important Storage and Handling Precautions ... 01-32
Fueling the Combine ..... 01-32
Fuel Specifications .... 01-33
Fuel Conditioners .. 01-33
Lubrication and Maintenance ... 01-34
Lubricants .... 01-34
Service Procedures ..... 01-34
Service Periods .... 01-34
Lubrication and Maintenance ... 01-35
Lubrication Details ... 01-41
Front of Combine ... 01-43
Left-hand Side ... 01-46
Right-hand Side ..... 01-48
Rear Axle ... 01-51
Engine .. 01-53
Type of Engine Oil ..... 01-53
Oil Additives .. 01-53
Checking Oil Level .... 01-53
Oil Change Intervals .. 01-53
Changing Engine Oil and Filter ..... 01-53
Brakes .. 01-55
Master Cylinder Oil Reservoir ... 01-55
Master Cylinder Adjustment .. 01-55
Parking Brake Adjustment ..... 01-55
Rotor Gearbox ..... 01-56
Transmission ... 01-56
Checking and Changing Lubricant .... 01-56
Final Drive .... 01-57
Without Risers ... 01-57
With Risers .... 01-57
Rear Wheel Bearings (Standard Axle) ..... 01-57
Tires and Wheels ..... 01-58
Tire Pressure ..... 01-58
Removing Wheel from Combine and Removing Tire. ... 01-58
Tire Mounting .... 01-59
Wheel Installation .. 01-60
Wheel Bolt Torque ..... 01-60
Maintenance of Tires ..... 01-61
Drive Belts ... 01-62
Banded Drive Belt ..... 01-62
Maintenance of Belts ..... 01-63
Belt Installation .. 01-64
Belt Sheave Alignment .. 01-65
Belt Problem and Wear Guide ... 01-66
Roller Chains ... 01-80
Inspection of Drive Chains and Sprockets .... 01-80
Drive Chain Adjustment and Tightening .... 01-80
Drive Chain Sprocket and Idler Alignment .... 01-81
Drive Chain Elongation and Sprocket Wear .. 01-82
Normal Tooth Wear ... 01-82
Not Normal Tooth Wear .... 01-83
Worn Chain on New Sprockets ..... 01-83
Drive Chain Service Tips ... 01-84
Cleaning and Lubricating Chains .. 01-85
Drive Chain Lubrication ..... 01-86
Drive Chain Lubricants .. 01-86
Good Drive Chain Lubrication ... 01-87
Belt and Chain Adjustments .... 01-88
Combine Drives - Left-hand Side ..... 01-88
Left-hand Pivot Shaft Drive Belt .... 01-88
Main Countershaft Drive .... 01-89
Belt Replacement .. 01-89
Hydrostatic Rotor Pump Drive ... 01-90
Spring Adjustment Hydrostatic Rotor Pump Drive .... 01-90
Feeder Reverser ... 01-91
Hydrostatic Propulsion Pump Drive ... 01-91
Front Beater Drive ..... 01-92
Spring Adjustment Hydrostatic Propulsion Pump Drive .... 01-94
Unloader Drive .. 01-95
Shoe Pitman Drive .... 01-96
Clean Grain Elevator Drive .... 01-97
Grain Tank Cross Auger Drive .. 01-97
Combine Right-Hand Drives .... 01-98
Feeder House Jack Shaft Drive Belt ..... 01-98
Fixed Speed Header Drive Belt - Standard ... 01-99
Variable Speed Header Drive Belt - If Equipped ..... 01-100
Grain Tank Filling Auger Drive Chain .. 01-100
Return Elevator and Auger Drive .... 01-101
Cleaning Fan Drive .. 01-102
Straw Spreader / Chopper Primary Drive .... 01-103
Straw Spreader / Chopper Secondary Drive ... 01-104
Feeder Elevator ..... 01-105
Conveyor Adjustment .. 01-105
Clean Grain And Returns Elevators ... 01-106
Clean Grain Elevator Chain Adjustment .. 01-106
Return Elevator Chain Adjustment .. 01-107
Installing Elevator Chains .... 01-108
Replacing Elevator Chain Paddles .. 01-108
Engine Drive Belt ... 01-108
Drive Belt ..... 01-108
Engine Compartment ..... 01-109
Engine Fuel System ... 01-111
Fuel Handling .. 01-111
Fuel Vent Breather .. 01-111
Fuel Filter and Water Separator .. 01-112
Engine Cooling System ..... 01-113
Coolant Change Period ... 01-113
Engine Cooling System Coolant .. 01-113
Checking Coolant Level .. 01-113
Radiator ... 01-114
Thermostat .. 01-114
Draining System .. 01-114
Filling System .. 01-115
Coolant System Monitoring ..... 01-115
Monitor Warnings .... 01-115
Engine Air Cleaner ..... 01-116
Outer Filter Element .... 01-116
Inner Filter Element ..... 01-116
Cleaning Outer Element .. 01-117
Electrical System ... 01-118
Batteries .. 01-118
Battery Disconnect Switch ... 01-118
Battery Charging ..... 01-119
Starter .. 01-120
Alternator ..... 01-120
Primary Circuit Breaker ... 01-120
Fuse Panel .. 01-121
Hydraulics .. 01-122
Checking Oil Level .. 01-122
Changing Hydraulic Oil .... 01-122
Hydrostatic Drives .. 01-124
Hydrostatic Oil Filters .. 01-124
Hydrostatic Oil Cooler ..... 01-124
Air Conditioning System .... 01-125
Condenser ... 01-125
Cab Air Filters .... 01-126
Cab Filter - Primary ..... 01-126
Cab Filter - Secondary .... 01-126
Recirculation Filter ... 01-126
Air Filter Cleaning Procedure .. 01-127
Storage Preparation ... 01-128
Combine .. 01-128
Engine ..... 01-128
Preparation For Use After Storage .... 01-128
Combine .. 01-128
Engine ..... 01-128
Torque Charts .... 01-129
Standard Torque Specifications .. 01-129
Metric Capscrew Markings and Torque Values ... 01-130
Metric Conversions .... 01-131
INDEX ... 01-133
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