Format: PDF (Printable Document)
File Language: English
File Pages: 266
File Size: 17.62 MB (Speed Download Link)
Brand: Terex
Model: BT3870 Cranes
Type of Document: Parts Manual
$ 50
The Terex BT3870 Crane is designed for flexible lifting operations in construction and field services. This Parts Manual provides exploded diagrams of the boom sections, slewing gear, outriggers, hydraulic components, and structural elements. It assists technicians in identifying every bolt, pin, bearing, cylinder, and hydraulic valve required for accurate part replacement.
Applications & Use Cases
Identifying structural and hydraulic lift components
Ordering boom, winch, and outrigger parts
Supporting slewing gear rebuilds
Finding correct seals, fittings, and hoses
Standardizing maintenance across multi-crane fleets
FAQ
Does this manual include OEM cross-reference numbers?
Yes, updated part references are included for most components.
Are the diagrams clear enough for full rebuilds?
Yes, every subassembly is mapped in detail.
Safety Note
Ensure the crane is fully stabilized before removing any boom or outrigger components.
LOWER
CARRIER FRAME
UPPER
SUPERSTRUCTURE
TRUCK CHASSIS
SUBFRAME ASSEMBLY
SUBFRAME INSTALLATION
MIDMOUNT TIEDOWN
ASSEMBLY
FLATBED OPTIONS
FLATBED INSTALLATION
MUDFLAP
BOOM REST ASSEMBLY
MAINFRAME INSTALLATION
OPERATOR PLATFORM
INSTALLATION
OPERATOR PLATFORM
ASSEMBLY
PLATFORM US STREET SIDE
PLATFORM US CURB SIDE
TURRET INSTALLATION
NON-CONTINUOUS ROTATION
SWING STOP INSTALLATION
NON-CONTINUOUS
COMBINED FLOW
SWING STOP INSTALLATION
MOTOR SHIFT
SWING STOP INSTALLATION
FLAG WELD
HYDRAULICS
SWING SYSTEM
22.1 ROTATION GEARBOX
ASSEMBLY
PUMP DRIVE CASE
OUTRIGGERS
OUTRIGGERS
MAIN OUTRIGGER ASSEMBLY
MAIN OUTRIGGER ASSEMBLY
MAIN OUTRIGGER CYLINDER
AUXILIARY OUTRIGGER
ASSEMBLY
AUXILIARY OUTRIGGER
CYLINDER
SWITCH BOX ASSEMBLY –
OUTRIGGERS
24.1
24.2
HYDRAULIC PUMP
INSTALLATION
TRIPLE VANE HYDRAULIC
PUMP ASSEMBLY
25
39A JIB
HOOK BALL – 7 TON NON –
HYDRAULIC SYSTEM
28
29
30
OPERATOR CONTROLS
HYDRAULIC RESERVOIR
INSTALLATION
HYDRAULIC RESERVOIR
FILTER INSTALLATION
HYDRAULIC RESERVOIR
PIPING
MAIN VALVE ASSEMBLY
STANDARD WINCH
MAIN VALVE PIPING
NON-CONTINUOUS
ROTATION
HYDRAULIC PIPING
NON-CONTINUOUS
ROTATION
HYDRAULIC PIPING – SWING
UNLOADER VALVE ASSEMBLY
WINCH VALVE ASSEMBLY
HYDRAULIC INSTALLATION
SUBFRAME & MAINFRAME
HYDRAULIC INSTALLATION
SUBFRAME & MAINFRAME
HYDRAULIC INSTALLATION
SUBFRAME & MAINFRAME
HYDRAULIC INSTALLATION
SUBFRAME & MAINFRAME
HYDRAULIC SCHEMATIC
HYDRAULIC INSTALLATION –
MAINFRAME CONSOLE
HYDRAULIC INSTALLATION –
MAINFRAME CONSOLE
HYDRAULIC INSTALLATION –
MAINFRAME CONSOLE
HYDRAULIC INSTALLATION –
MAINFRAME CONSOLE
CENTER POST •
CONTROL CONSOLE
ASSEMBLY
CONTINUOUS ROTATION AND
NON CONTINUOUS
COMBINED FLOW
CONTROL CONSOLE
ASSEMBLY
CONTINUOUS ROTATION AND
NON CONTINUOUS
MOTOR SHIFT
THROTTLE ASSEMBLY
THROTTLE INSTALLATION
ELECTRICAL
ELECTRICAL SYSTEM
ELECTRICAL SYSTEM
HARNESSES
ELECTRICAL SYSTEM
CONSOLE CONTROLS
ELECTRICAL ASSEMBLY –
MAIN FRAME
ELECTRICAL OUTRIGGER CTL.
ELCETRICAL ASSEMLBY –
JIB ASSEMBLY – SINGLE
STAGE
JIB ASSEMBLY – SINGLE
STAGE
JIB ASSEMBLY – TWO STAGE
JIB ASSEMBLY – TWO STAGE
JIB ASSEMBLY – TWO STAGE
39A.10 JIB ASSEMBLY – TWO STAGE
39A.11 JIB STOWAGE
HYDRAULIC WINCH
MISCELLANEOUS
TOOLS, PAINT, LUBRICANTS
29.1 TOOLS / PAINTS
DECALS & PLACARDS
WINCH, BOOM, &
ATTACHMENTS
HYDRAULIC TELESCOPING BOOMS
MARKING DECAL PLACEMENT
MARKING DECAL PLACEMENT
MARKING DECAL PLACEMENT
MARKING DECAL PLACEMENT
MARKING DECAL PLACEMENT
MARKING DECAL PLACEMENT –
OPTIONAL
BOOM ASSEMBLY – 70
BOOM ASSEMBLY – 70′ BASE
BOOM ASSEMBLY – 70
2ND STAGE
BOOM ASSEMBLY – 70
3RD STAGE
EXTENSION CYLINDER
ASSEMBLY – 70′ BOOM
CABLE GUIDE INSTALLATION
70′ BOOM
BOOM AND TOPPING
CYLINDER INSTALLATION
TOPPING CYLINDER
HYDRAULIC WINCH
NON-CONTINUOUS
COMBINED FLOW 1 SPEED
HYDRAULIC WINCH
NON-CONTINUOUS
MOTOR SHIFT 2 SPEED
WINCH MOTOR
CONTINUOUS ROTATION
COMBINED FLOW 1 SPEED
WINCH MOTOR
CONTINUOUS ROTATION
MOTOR SHIFT 2 SPEED
WINCH ASSEMBLY
WINCH ASSEMBLY
WINCH BRAKE VALVE
HOOK BLOCKS, BALLS
HOOK BLOCK – 1 SHEAVE /
15 TON
HOOK BLOCK – 2 SHEAVE /
25 TON
HOOK BALL
_ 6 1/4 TON
HOOK BALL – 7 TON SWIVEL
SWIVEL
BT3870
WIRE ROPE AND REEVING
51.57
45.1 WIRE ROPE AND REEVING
51.59
ACCESSORIES
OPTIONAL EQUIPMENT
RADIO REMOTE CONTROL
RADIO REMOTE CONTROL
ACTUATOR VALVE ASSEMBLY
RADIO REMOTE CONTROL –
WIRING DIAGRAM
INCHING WINCH
TOOL BOX – INSTALLATION
OIL COOLER INSTALLATION
FRONT BUMPER OUTRIGGER –
INSTALLATION (34′ FRAME)
FRONT BUMPER OUTRIGGER –
INSTALLATION (46″ FRAME)
FRONT BUMPER OUTRIGGER
VALVE
HYDRAULIC INSTALL NON
CONTINOUS ROTATION –
COMBINED FLOW
HYDRAULIC INSTALL NON
CONTINOUS ROTATION –
MOTOR SHIFT
HYDRAULIC INSTALL
CONTINOUS ROTATION –
COMBINED FLOW
HYDRAULIC INSTALL
CONTINOUS ROTATION –
MOTOR SHIFT
1 PERSON STEEL PLATFORM –
ASSEMBLY
1 PERSON STEEL PLATFORM
INSTALLATION
2 PERSON STEEL PLATFORM
INSTALLATION
2 PERSON STEEL PLATFORM –
ASSEMBLY
52
RATED CAPACITY INDICATOR
GREER RC1510 ASSEMBLY
GREER UG500R COMPUTER
GREER REEL
SWITCH BOX
ASSEMBLY – GREER DISPLAY
