The Liebherr LTM 1220-5.1 Mobile Crane is a serious all‑terrain machine, and when it’s down, nobody in the yard cares what “type” of manual you grabbed—only whether it gets them to the right box on the crane. The BMK / Technical Information manual is what your electrical and hydraulic guys reach for when the schematic says “K15” or “X45” and they need to know where that thing actually lives. Component identification is what keeps you from wasting an hour opening the wrong covers and chasing the wrong harness.
What this manual helps you do
- Identify every major component on the carrier and superstructure using outline and layout diagrams.
- Locate specific boxes, valves, sensors, relays, and plugs on the real machine from their BMK tags and reference designators.
- Match wiring or hydraulic schematic symbols (E…, K…, V…, X…) to their physical mounting points on the crane.
- Cross-reference Liebherr’s internal component names and IDs to the other documents you already use in the workshop.
- Pinpoint components linked to fault codes so your tech can walk straight to the right area instead of guessing.
Who this is for
This is aimed at workshop technicians, field service techs, electrical diagnostic engineers, fleet mechanics, and training instructors. If you need repair steps, torque specs, or part numbers, you’re after a service manual or parts catalogue, not this BMK component identification book.
FAQ
Q: Are the diagrams clear and searchable in the PDF?
A: These BMK PDFs are usually clean scans or native files with readable layouts, and you can search by BMK code or text.
Q: Does it cover both the carrier and the superstructure?
A: Yes, this BMK manual for SN 070239 covers component identification on both carrier and superstructure in one product.
Q: Does it tie in with my wiring diagrams and parts catalogues?
A: Yes, the BMK reference designators are meant to be used alongside Liebherr wiring diagrams, hydraulic schematics, service manuals, and parts books.
Bottom line: if your goal is to find and name components on an LTM 1220-5.1 so you can then use your service and parts books properly, this is exactly the manual you need. If you expect repair instructions or part numbers, it’s the wrong book.
📘 Show Index
Table of Contents:
Carrier — Table of Contents
- Vehicle:
- View from front, lighting and mirrors
- View from rear, lighting
- View from rear, sockets, warning signal generator
- Support control unit,
- side marker lights, left
- Support operating unit, side marker lights, right
- Cab:
- Doors and windows, interior lighting
- Ventilation and heat exchangers
- Operating elements
- Batteries and main fuse box
- Centre console – I/O modules,
- Diagnostic connector
- Centre console – relays
- Centre console – fuses
- Instrumentation module, voltage converter, ECU's
- Pressurized air system:
- Pressure sensor and pressure switch
- Air cylinder, air dryer
- Switch solenoid valves
- Auxiliary load
- Diesel engine D 9408 TI-E A5:
- Starter, alternator, needle movement sensor
- RPM sensor
- Sensor, charge air pressure / temperature, flame glow plugs
- Sensor, oil / coolant temperature sensor
- EDC control
- Air filter vacuum sensor, oil pressure sensor
- Cooling system, fan drive
- Fuel supply, fuel pre-heating
- Automatic shift transmission ZF 16 AS 2602 with intarder:
- Gear and coupling plate
- Intarder
- Power train:
- Overview
- Distributor gear – impulse sensor and emergency steering pump
- Transfer gearbox – road/off-road switchover
- Longitudinal and transversal differential locks
- Longitudinal and transversal differential locks
- Wheel speed sensor for ASR
- Hydraulic fluid supply:
- Steering circuit I/II, support, axle suspension
- Control – support, axle suspension
- Steering:
- Steering gear, steering oil circuit monitor
- Rear axle steering, rear axle lock
- Axle suspension:
- Level sensor on 1st and 5th axle, shift valves
- Fill/ drain valves and blocking valves, left
- Fill/ release valves and blocking valves, right
- Lift / lower axle 3
- Support: Control valves, support force sensor – front, left
- Support: Control valves, support force sensor – rear, left
- Support: Control valves, support force sensor – front, right
- (Untitled)
- Support: Control valves, support force sensor – rear, right
- Support: Incline sensor, rotary connection
- Special equipment:
- Auxiliary heater
- Special equipment:
- Air conditioning system
- Special equipment:
- Telma eddy current brake
- Overview to participant on LSB 1
- Overview to participant on CAN data bus
- Index
- Index
- A
- A1
- A5
- A9
- A10
- A11
- A12
- A13
- A14
- A15
- A61
- A62
- A68_B1
- A68_Y1
- A68_Y2
- A69
- A69-Y14
- A69-Y15
- A69-Y16
- A69-Y17
- A71
- A77
- A100
- A130
- A131
- A145
- A150_E
- A150_M1
- A150_M2
- A151_E
- A151_M1
- A151_M2
- AF0
- AF1
- AF2
- AF3
- AF4
- AF5
- AF6
- AF7
- AF8
- AF9
- AF10
- B
- B5
- B6
- B7
- B8
- B9
- B11
- B12
- B13
- B14
- B28
- B28_X
- B29
- B29_X
- B30
- B31
- B31_X
- B32
- B32_X
- B33
- B33-X
- B33_X
- B35
- B35_X
- B36
- B36_X
- B37
- B37_X
- B38
- B38_X
- B39
- B39_X
- B70
- B70_X
- B100
- B121
- B122
- B123
- B124
- B141
- B142
- B143
- B144
- E
- E1
- EDC
- E2
- E3
- E4
- E5
- E6
- E20
- E21
- E22
- E25
- E26
- E27
- E28
- E40
- E41
- E50
- E51
- E60
- E61
- E62
- E63
- E64
- E75
- E80
- E81
- E82
- E83
- E84
- E95
- E100
- E101
- E102
- E103
- E128_E1
- E128_E2
- E128_E3
- E128_E4
- E128_E5/E6
- E128_E7
- E128_E8
- E129_E1
- E129_E2
- E129_E3
- E129_E4
- E129_E5/E6
- E129_E7
- E129_E8
- E200
- E204
- E230
- E230_X
- E231
- F
- G
- H
- K
- K40
- K41*
- K47*
- K49
- K54
- K56
- K57
- K61*
- K76*
- K77*
- K78*
- K79*
- L
- M
- M1
- M9
- M10
- M11
- M12
- M15
- M19
- M20
- M21
- N
- P
- P10
- P11
- P14
- P30
- P30_X
- P31
- P31_X
- R
- S
- S1
- S4
- S5
- S12
- S13
- S14
- S15
- S16
- S17
- S19
- S22
- S23
- S24
- S30
- S32
- S34
- S41
- S42
- S44
- S45
- S50
- S51
- S53
- S55
- S58
- S59
- S60
- S61
- S62
- S63
- S64
- S65
- S80
- S112
- S114
- S116
- S118
- S119
- S159*
- S201*
- S203*
- U
- X
- X29
- X44
- X45
- X50
- X46
- X50
- X64
- X90
- X91
- X92
- X93
- X94
- S112
- X200*
- X202*
- X203*
- X207*
- X275
- X613
- X615
- X623
- X625
- X633
- X643
- X653
- X655
- Y
- Y10
- Y11
- Y12
- Y13
- Y16
- Y17
- Y18
- Y19
- Y20
- Y21
- Y24
- Y29
- Y30
- Y31
- Y32
- Y33
- Y34
- Y36
- Y50
- Y52
- Y53
- Y53_X
- Y64
- Y65
- Y66
- Y112_X
- Y80A
- Y80B
- Y81A
- Y81B
- Y82A
- Y82B
- Y83A
- Y83B
- Y84A
- Y84B
- Y85A
- Y85B
- Y86A
- Y86B
- Y87A
- Y87B
- Y91
- Y92
- Y93
- Y94
- Y107
- Y108
- Y109
- Y112
- Y200
- Y202A
- Y202B
- Y203
Superstructure — Table of Contents
- Table of Contents
- Superstructure, general:
- Batteries (2x12V), battery master switch, main fuses
- Lighting turntable, cab, boom
- Air pressure system, fuel tank sensor
- Central lubrication system
- Crane cab:
- Heater, auxiliary heater, air conditioning system
- Auxiliary heater Thermo 90 ST
- Windshield wiper, other
- Cab instruments:
- Liccon monitor, pedals, master switch
- Roof console control panel
- Switch box:
- Liccon, control ON, CAN, LSB and ECU engine
- Swing frame, relay / fuses
- Notes for EMERGENCY OPERATION without LICCON control with X-emergency plug
- Notes for EMERGENCY OPERATION without LICCON control with X-emergency plug
- Diesel engine D 924 TI-E 180 KW (245 BHP):
- Components
- Oil temperature sensor, EDC- plug, flame glow system, filter heater
- Sensor RPM, oil pressure, charge air temperature / pressure, air filter vacuum
- Cooling system
- Crane hydraulic:
- Hydraulic pumps (with HW II), pressure sensor – pump 1/2
- Overview – Hydraulic pumps (with HW II)
- Slewing gear and overview – hydraulic components
- Replenishing pressure / Supply – auxiliary hydraulic
- Temperature sensor hydraulic oil
- Hoist winch I
- Hoist winch II
- Luffing gear, telescoping / valve block (pump 4, pump 5)
- Slewing gear (2x)
- Auxiliary user – luffing down, tilt cab, lock turntable, luffing jib assembly
- Ballasting
- Turntable lock / boom direction
- Telescopic boom:
- Cable drums, angle and length sensors
- Boom head
- Tele section pinning,
- position sensor
- Tele pinning, tong pinning
- Emergency operation – tele pinning, tong pinning
- Auxiliary equipment:
- Folding jib swing, luff
- Folding jib hydraulic components
- Folding jiblimit switches, angle sensors
- Hydraulic hose drum
- (Untitled)
- Index_OW
- Index_OW
- Index_OW
- A
- A20…
- A1…
- A2…
- A11…
- A50…
- A51…
- A417…
- B
- B1…
- B2…
- B4…
- B6…
- B7…
- B11…
- B12…
- B13…
- B17*…
- B25…
- B26…
- B29…
- B30…
- B31…
- B32…
- B33…
- B34…
- B35…
- B36…
- B37…
- B38…
- B55…
- B86…
- E
- E/A Modul 6…
- E6…
- E7…
- ECU 1…
- EDC…
- E10*…
- E11…
- E12…
- E17…
- E18…
- E60…
- E96…
- EP0…
- EP1…
- EP2…
- EP3…
- F
- G
- G1…
- G2…
- G2 / G3Batterien…
- G3…
- H
- H21…
- H46…
- H613…
- H80…
- H94…
- H95…
- H105…
- H106…
- H616…
- H619…
- H620…
- H633*…
- H634*…
- H660…
- K
- K1…
- K27…
- K28…
- K41…
- K42…
- K44…
- K45…
- K14…
- K16…
- K17…
- K18…
- K19…
- K20…
- K21…
- K22…
- K23…
- K24…
- K25…
- K26…
- K29…
- K30…
- K31…
- K32…
- K33…
- K34…
- K35…
- K37…
- K38…
- K39…
- K51…
- K52…
- K53…
- K54…
- K56…
- K57…
- K58…
- K59…
- K60…
- K61…
- K62…
- K63…
- K651…
- K652…
- M
- M1…
- M2…
- M3…
- M4…
- M5…
- M6…
- M7…
- M9…
- M14…
- M22…
- M23…
- MA…
- MP1…
- MP10…
- MP11…
- MP2…
- MP4A…
- MP4B…
- MP5…
- MP6…
- MP7…
- MP8…
- MP9…
- N
- P
- P…
- P12…
- P2…
- P3…
- P12…
- P655…
- P656*…
- R
- S
- S1Batterie-…
- S26…
- S27…
- S28…
- S29…
- S30…
- S31…
- S32…
- S34…
- S35…
- S38…
- S39…
- S72…
- S73…
- S76…
- S77…
- S78…
- S81…
- S83…
- S89…
- S90…
- S92…
- S99…
- S103…
- S104…
- S301…
- S320…
- S322…
- S324*…
- S401…
- S413…
- S420…
- S422…
- S424…
- S602…
- S604…
- S606…
- S608…
- S610…
- S612…
- S614…
- S618…
- S620…
- S622…
- S624…
- S626…
- S628…
- S628*…
- S632…
- S636…
- S638…
- S640*…
- S642*…
- S644*…
- S646*…
- S648*…
- S650…
- S652…
- S654…
- S658…
- S901…
- S902…
- S903…
- S904…
- S905…
- S908…
- S912…
- S913…
- S914…
- S915…
- S918…
- S919…
- S930…
- S931*…
- S940…
- S945…
- T
- V
- X
- X1+K…
- X1….X40…
- X2+K…
- X205S31…
- X253B33…
- X3+K…
- X4+K…
- X413…
- X417…
- X45…
- X5+K…
- X6…
- X6+K…
- X7…
- X7+K…
- X8+K…
- X251…
- X251-B31…
- X252-B32…
- X254-B34…
- X255-B35…
- X256-B36…
- X257-B37…
- X258-B38…
- X259-B39…
- X260…
- X272-A11…
- X45…
- X50…
- X51…
- X52…
- X53…
- X54…
- X55…
- X56…
- X57…
- X58…
- XNOT…
- X183…
- X205S31…
- X250…
- X268…
- X269…
- X417…
- X501…
- X502…
- X519…
- X556…
- Y
- Y4…
- Y5…
- Y6a…
- Y6b…
- Y9…
- Y11a…
- Y11b…
- Y12…
- Y13…
- Y14…
- Y19a…
- Y19b…
- Y20…
- Y21…
- Y22a…
- Y22b…
- Y26…
- Y27…
- Y28…
- Y31a…
- Y31b…
- Y32a…
- Y32b…
- Y33a…
- Y33b…
- Y34…
- Y35…
- Y38…
- Y40…
- Y41…
- Y42…
- Y44…
- Y45…
- Y46…
- Y47a…
- Y47b…
- Y49…
- Y57…
- Y59…
- Y69…
- Y80a…
- Y80b…
- Y82…
- Y84a…
- Y84b…
- Y85a…
- Y85b…
- Y86…
- Y137…
- Y103a…
- Y103b…
- Y137…
- Y139…
- Y141…
- Y142…
- Y26…
- Z
Liebherr Crane
