Drott 30, 35, 40, 50 EC/YC Excavator Service Manual

• Covers Drott 30, 35, 40, 50 EC/YC Series “A” Excavators
• P/N 406079M4
• 120 pages
• Downloadable PDF format
• Bookmarked chapters, searchable, printable
• 18mb file size
• Works with Windows/Mac/Tablet/Mobile

The Drott 30, 35, 40 and 50 EC/YC service manual includes specifications, step-by-step instructions and accurate illustrations to aid mechanics with mechanical, electrical or hydraulic repairs. The complete service manual was carefully reproduced from the original dealer manual and is a must for mechanics repairing or rebuilding the Drott excavator to the manufacturer’s standards.

Latest edition. Engine repair manual sold separately.

Topics:

CRAWLER UNDERCARRIAGE

• Frame
• Track Shoes
• Track Adjustment
• Breaking Track
• Expanding Track Base
• Track Rollers
• Disassembly and Assembly of Roller
• Track Drive Tandem Motors
• Track Drive Brake
• Final Drive Transmission Assembly
• Drive Wheel Removal
• Front Idler Wheel Disassembly
• Carbody and Carbody Leveler
• Crawler Trouble Shooting
• Brakes Trouble Shooting

UPPERSTRUCTURE

• Upper Structure Removal
• Turntable and Bearing
• Swing Drive Motor
• Brake
• Reducer
• Hydraulic Swivel
• Valve Bank Assembly
• Main Tandem Pump
• Disassembly
• Inspection
• Sub Assemblies
• Final Assembly
• Taper Bearing
• Installation and Run-In
• Engine Maintenance and Service
• In-Line Oil Filters
• Counterweight
• Adjusting Control Pedal Linkage
• Hydraulic Oil Reservoir
• Oil Screen
• Fuel Tank
• Air Cleaner

BOOMS

• YC Boom
• EC Boom
• Main Boom
• Tool Boom
• Tool Boom Extension Removal
• Grapples

HYDRAULIC SYSTEM

• General Information
• Overall Hydraulic Circuit
• Reservoir Hydraulic Circuit
• Pump Hydraulic Circuit
• Filters Hydraulic Circuit
• Work Cylinders Hydraulic Circuit – (Hoist, Crowd and Tool)
• Swing Motor Hydraulic Circuit
• Swivel Motor Hydraulic Circuit
• Drive Motors Hydraulic Circuit
• Leveler Cylinders Hydraulic Circuit
• Brakes Hydraulic Circuit
• Troubleshooting
• Checking Hydraulic Pressures
• Pump
• Hydraulic System
• Valves

ELECTRICAL

• General Information
• Wiring Harness Inspection

GENERAL TORQUE SPECIFICATIONS

• Capscrews and Studs
• Hydraulic Fittings

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