
John Deere 990 Crawler Excavators Technical Manual TM1230
The John Deere 990 Crawler Excavators Technical Manual TM1230 provides technical information for the 990 crawler excavator, covering general specifications, torque values, lubrication, tracks, axles, suspension systems, and hydraulics. It includes extensive engine information, including crankshaft and main bearings, camshaft and valve components, connecting rods and pistons, cylinder block, lubrication, fuel injection, cooling, and starting systems. Additional sections cover engine auxiliary systems, electrical systems, frame and chassis components, the operator station, sheet metal, excavator systems, and swing mechanisms. The manual also includes system testing procedures for the engine, electrical and hydraulic systems, miscellaneous components, and heating and air conditioning, along with a comprehensive list of special tools and an index.
Specifications: SM
- Brand: John Deere Excavators
- Type of Document: Technical Manual
- Type of Equipment: Crawler Excavator
- Model: 990
- Manual Number: TM1230
- Language: English
- Format: PDF

Details:
Table of Contents
Content
Introduction
General Information
- Genreal Specififcations
- Cap Screwstorque Values
- Lubrication
Tracks
- Track Systems
Axles and Suspension Systems
- Axle Shaft, Bearings, and Reduction Gears
- Hydraulic System
Engine
- Removal and Instalation
- Crankshaft and Main Bearings
- Camshaft and Valve Actuating Means
- Connecting Rods and Pistons
- Cylinder Block
- Oiling System
- Ventilating System
- Cylinder Head and Valves
- Exhaust Manifold
- Fuel Injection System
- Intake Manifold
- Turbocharger
- Water Pump
- Thermostats, Housings and Water Piping
- Oil Cooler
- Starting Motor and Fastenings
- Fan Drive
- Flywheel, Housing, and Fastenings
Engine Auxiliary Systems
- Cold Weather Starting Aids
- Cooling Systems
- Speed Controls
- Intake System
- External Fuel Supply System
Electrical Systems
- Batteries, Support and Cables
- Alternator, Regulator and Charging System Wiring
- Wiring Harness and Switches
- Instruments and Indicators
Frame Chassis or Supporting Structure
- Removal and Installation
- Frame Installation
- Chassis Weights
Operator’s Station
- Removal and Installation
- Operator Enclosure
- Seat
- Heating and Air Conditioning
Sheet Metal and Styling
- Fenders
Engine Repair
- Buckets, Teeth, Shanks and Sidecutters
- Frames
- Hydraulic System
Swing, Rotation or Pivoting System
- Brakes
- Mechanical Drive Elements
- Hydraulic System
System Testing
- General Information
- Engine
- Electrical System
- Hydraulic System
- Miscellaneous Components
- Heating and Air Conditioner
Special Tools
- CS2428
- D-1006AA
- D-01031AA
- D-01043AA
- D-01045AA
- D-01047AA
- D-01048AA
- D-01061AA
- D-01062AA or D-01073AA
- D-01063AA
- D-01065AA
- D-01080AA
- D-01084AA
- D-01087AA
- D-01088AA
- D-01109AA (Y-900)
- D-01110AA
- D-01168AA
- D-01182AA
- JT01600
- D-01186AA
- D-01200AA
- D-01209AA
- D-01299AA
- D-05012ST
- D-05022ST
- D-05058ST
- D-05104ST
- D-05155ST
- D-05209ST
- D-05223ST
- D-05224ST
- D-05227ST
- D-05232ST
- D-05267ST
- D-05271ST
- D-05273ST
- D-14546-BA
- D-15028NU
- D-15037NU
- D-15038NU
- D-15041NU
- D-15037NU
- D-17008BR or D-17011BR
- D-17015BR
- D-17031BR
- D-18018KD
- D-20002WI
- D-27001TX
- D-27002TX
- D-27501BM
- JD-244-1 and JD-244-2
- JD-290
- JD-309
- JD-342
- JD-345
- JD-357
- JDE-7
- JDE-55
- JDE-79
- JDE-81-4
- JDE-90
- JDE-92
- JDE-105
- JDE-123A
- JDST20
- JDE-124
- JDE-125
- JDE-126
- JDE-127
- JDE-129-1
- JDE-130-2
- JDE-130-3
- JDE-131
- JDE-132
- JDE-133
- JDE-135
- JDE-136
- JDE-137-2
- JDE-137-1
- JDE-139
- JDE-147
- JDE-148
- JDE-41296
- JDF-23
- JDF-24
- JDF-29
- JDG-24
- JDG-31
- JDG-69
- JDG-92
- JDG-105
- JDG-126
- JDG-127
- JDG-128-1
- JDG-146
- JDG-180
- JDG-181
- JDG-184
- JDG-185
- JDG-197
- JDG-244
- JDG-248
- JDG-259 (A), JDG-260 (C), AND JDG-261 (B)
- JDG-262
- JDG-263
- JDG-264
- JDG-265
- JDG-270
- JDG-405
- JDST-28
- JT-05425
- JT25009
- JT25011
- JT25014
- JT25018
- JT25033



