Manufacturer source guide · Original identification research
Use the correct parts source
The official diagram entry point asks for both equipment identity and serial number before displaying relevant diagrams.
Model-name browsing is an entry to identification; it does not establish that an individual machine retains every factory component.
Source geography: North America; confirm Canadian dealer. Confirm the documentation and supplying channel for the actual machine’s market.
Prepare the identification record
Record the complete model suffix and serial number from the machine plate.
Match the diagram assembly and callout to the actual component.
Ask the supplying dealer to confirm any serial break or replacement instruction.
Keep full serial/PIN and contact information out of public descriptions and photographs. Use the manufacturer’s appropriate channel for private serial-specific checks. A successful search does not replace inspection of the currently installed assembly.
Research installed assemblies, undercarriage configurations, circle drives, hydraulic scope and service alternatives. These original guides supply no automatic compatibility, catalogue stock or production-year inference.
127 accepted equipment identities connect this manufacturer with 21 equipment categories. Generation and regional context remain on their existing specification pages. These links establish discovery coverage, not verified parts applications.
Identify the engine, pump, axle, transmission or other tagged assembly independently of the carrier. An aftermarket issuer’s number and a seller stock code remain separate from the machine OEM’s identity. Ask a supplier to identify the documentation behind any cross-reference and the conditions attached to a proposed replacement.
Historical and generation research
These 16 source-supported designations come from the legacy research queue. Some still have current regional product pages. Only records explicitly presented as past or non-current by the cited OEM carry that context; the queue alone does not prove discontinuation.
Caterpillar 320B
OEM-supported designation · Historical/discontinued status not established
OEM page explicitly names 320B, 320C and 320D in its machine model list. Used solely as identity evidence; no part fitment relationship imported.
Evidence region / context
Vietnamese-language OEM store; machine sales region unresolved
Production period
Not established for the complete designation
Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.
Component identification methods for 320B
These methods help prepare an inquiry. They do not assign any particular part, undercarriage family or replacement to this machine.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
Cat Parts Store: 096-9411 ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
Cat Parts Store: 096-9411 ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
OEM-supported designation · Historical/discontinued status not established
OEM page explicitly names 320B, 320C and 320D in its machine model list. Used solely as identity evidence; no part fitment relationship imported.
Evidence region / context
Vietnamese-language OEM store; machine sales region unresolved
Production period
Not established for the complete designation
Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
Cat Parts Store: 096-9411 ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
OEM-supported designation · Historical/discontinued status not established
OEM machine list explicitly distinguishes 330C and 330D plus suffixed configurations. Identity evidence only.
Evidence region / context
Czech-language OEM store; machine sales region unresolved
Production period
Not established for the complete designation
Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
OEM-supported designation · Historical/discontinued status not established
OEM machine list explicitly distinguishes 330C and 330D plus suffixed configurations. Identity evidence only.
Evidence region / context
Czech-language OEM store; machine sales region unresolved
Production period
Not established for the complete designation
Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
OEM catalogue identifies D6N, D6R and D8T among non-current entries, including multiple D6N and D6R configurations.
Evidence region / context
H-CPC regional catalogue L390
Production period
Not established for the complete designation
Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
Caterpillar H-CPC Medium Dozers ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
Caterpillar H-CPC Medium Dozers ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
OEM catalogue identifies D6N, D6R and D8T among non-current entries, including multiple D6N and D6R configurations.
Evidence region / context
H-CPC regional catalogue L390
Production period
Not established for the complete designation
Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
Caterpillar H-CPC Medium Dozers ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
OEM-supported designation · Historical/discontinued status not established
OEM machine list names 950G and 966H separately from adjacent generations. Identity evidence only.
Evidence region / context
Czech-language OEM store; machine sales region unresolved
Production period
Not established for the complete designation
Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
Cat Parts Store: 105-5180 ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Cat Parts Store: 105-5180 ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
OEM-supported designation · Historical/discontinued status not established
OEM page names 416C and 420D in its backhoe-loader model list. Identity evidence only; machine configuration still requires dealer validation.
Evidence region / context
English OEM store; machine sales region unresolved
Production period
Not established for the complete designation
Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
Cat Parts Store: 171-8772 ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
OEM-supported designation · Historical/discontinued status not established
OEM page names 416C and 420D in its backhoe-loader model list. Identity evidence only; machine configuration still requires dealer validation.
Evidence region / context
English OEM store; machine sales region unresolved
Production period
Not established for the complete designation
Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Related existing designations remain distinct. A related name does not establish equivalence:
Cat Parts Store: 171-8772 ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
OEM-supported designation · Historical/discontinued status not established
OEM product page confirms exact 259D3 identity. Its presence as a product page does not establish discontinued status.
The 259D3 uses a vertical-lift layout and a suspended track undercarriage. For parts research, record the fitted track width, idler arrangement, coupler type and hydraulic package before comparing components.
The page distinguishes standard-flow and high-flow packages. A model-only search cannot resolve attachment hydraulic demand, electrical control or the installed option package.
Caterpillar lists the C3.3B engine for this configuration. Capture the actual engine identification and machine serial before requesting fuel, emissions or electronic components.
Evidence region / context
United States product page
Production period
Not established for the complete designation
Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Caterpillar 259D3 Compact Track Loader ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
OEM non-current record is explicitly 303.5E CR — 2016, GN1. A separate OEM record exists for 2012 Tier4Interim/StageIIIA Global; do not collapse their specifications.
The archived GN1 record identifies a Cat C1.8 engine and selectable auxiliary work-tool flow. The CR designation and the archived configuration need to travel with an inquiry.
A model label alone does not identify the bucket linkage, auxiliary circuit or emissions configuration. Match the machine serial to the relevant OEM record before selecting an assembly.
Evidence region / context
H-CPC GN1 configuration
Production period
Not established for the complete designation
Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.
Use this section to retain the exact designation and its source context. A parts request still needs identification of the currently installed assembly.
Caterpillar 303.5E CR Mini Excavator ↗ · reviewed 2026-10-15. Identity evidence does not import a part application, even where the source is an item’s model list.
Keep a catalogue identity separate from available stock. For a used or rebuilt assembly, describe its donor and inspection evidence, installed position, item condition and what the quote includes. A supplier’s statement remains attributable to the supplier until independently verified.
German-language OEM store; machine sales region unresolved; Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.; contextual research only, no installed-component identification
Identify the Caterpillar 140H machine generation and the actual electrical assembly as separate research subjects. This investigation preserves the accepted model context and records what the available evidence can establish about sealed connectors, contacts, seals and repair pigtails.
DT style connector vs wire harness compatibility
Retained OEM cutting-edge product source still names140H with NA/ES variants. It is identity evidence only and provides no DT connector relationship. A sealed connector is a coordinated set of housings, contacts, sealing elements and retention features. A repair pigtail adds conductors and terminations to that system. Identifying one visible shell is useful, but it does not identify the complete electrical connection or its machine circuit. For Caterpillar 140H, retain housing family, cavity/key, contact size and mating half as observed evidence rather than completing the record from a similar machine. Physical mating or pin count alone does not prove circuit interchange.
Keep the machine and assembly evidence connected
Caterpillar 140H retains its existing canonical research owner. The investigation concerns sealed connectors, contacts, seals and repair pigtails. Read the source in its stated market and generation; a currently advertised feature can describe an option, a package or a later configuration. Record the issuer and complete designation on the actual assembly separately from the machine name. A housing mark, a general technology label and an orderable service identity answer different questions. Missing identifiers stay unknown. A prior repair or assembly replacement can also make the original build information insufficient to identify what is present now.
Resolve the remaining configuration privately
The retained manufacturer evidence supports the historical designation at its existing section. That evidence is not an electrical installation record. Preserve suffixes, regional naming and any unknown production interval; do not substitute the current similarly named machine for this historical subject. A qualified review should connect the actual hardware revision, harness and connector configuration, signal interpretation and applicable application or calibration evidence. Keep full PIN/serial identifiers, software credentials and service access private. Neither the absence of a fault nor a matching supply voltage establishes interchangeability. This page does not provide energized tests, wiring adaptation, programming steps or a replacement approval. The linked component research explains which evidence belongs in each part of that review.
Specification evidence record
Published values retain their exact reference scope. Empty fields mean the value has not been established; they never mean zero. General model associations do not establish installed or serial-specific fitment.
Caterpillar 140H: DT style connector: documented values and open identification fields
Property
Value / status
Scope and interpretation
Exact installed electrical component
Unverified
No actual assembly identification has been established for this machine.
Hardware, application and serial-specific compatibility
Unverified
Requires the actual assembly, configuration and qualified machine evidence.
Unresolved technical and source questions (1)
Exact component, hardware/software/calibration, harness and serial-specific compatibility remain unverified.
Original HeavyEQ analysis and selected source facts. No catalogue reproduction licence, manufacturer endorsement or machine-specific compatibility is implied.
Caterpillar 320B: Historical diagnostics and protocol generation
Vietnamese-language OEM store; machine sales region unresolved; Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.; contextual research only, no installed-component identification
Identify the Caterpillar 320B machine generation and the actual electrical assembly as separate research subjects. This investigation preserves the accepted model context and records what the available evidence can establish about service connectors, diagnostic adapters and scan interfaces.
Historical diagnostics and protocol generation
Current Cat store has a320B-associated engine-ECM research lead; this neither resolves historical diagnostics nor reclassifies engine hardware as machine-controller ownership. A diagnostic connector or communication adapter does not supply every service capability for a machine. Research the adapter hardware, supported transport, licensed software, applicable documentation and authorized machine access as different objects. For historical equipment in particular, preserve the exact model generation rather than projecting a modern network or service-tool description onto an earlier control system. For Caterpillar 320B, retain scan tool/diagnostic port vs ECU, service authorization needed as observed evidence rather than completing the record from a similar machine. No bypass, secret credentials, immobilizer programming or unauthorized module flashing.
Keep the machine and assembly evidence connected
Caterpillar 320B retains its existing canonical research owner. The investigation concerns service connectors, diagnostic adapters and scan interfaces. Read the source in its stated market and generation; a currently advertised feature can describe an option, a package or a later configuration. Record the issuer and complete designation on the actual assembly separately from the machine name. A housing mark, a general technology label and an orderable service identity answer different questions. Missing identifiers stay unknown. A prior repair or assembly replacement can also make the original build information insufficient to identify what is present now.
Resolve the remaining configuration privately
The retained manufacturer evidence supports the historical designation at its existing section. That evidence is not an electrical installation record. Preserve suffixes, regional naming and any unknown production interval; do not substitute the current similarly named machine for this historical subject. A qualified review should connect the actual hardware revision, harness and connector configuration, signal interpretation and applicable application or calibration evidence. Keep full PIN/serial identifiers, software credentials and service access private. Neither the absence of a fault nor a matching supply voltage establishes interchangeability. This page does not provide energized tests, wiring adaptation, programming steps or a replacement approval. The linked component research explains which evidence belongs in each part of that review.
Specification evidence record
Published values retain their exact reference scope. Empty fields mean the value has not been established; they never mean zero. General model associations do not establish installed or serial-specific fitment.
Caterpillar 320B: Historical diagnostics and protocol generation: documented values and open identification fields
Property
Value / status
Scope and interpretation
Exact installed electrical component
Unverified
No actual assembly identification has been established for this machine.
Hardware, application and serial-specific compatibility
Unverified
Requires the actual assembly, configuration and qualified machine evidence.
Unresolved technical and source questions (1)
Exact component, hardware/software/calibration, harness and serial-specific compatibility remain unverified.
Original HeavyEQ analysis and selected source facts. No catalogue reproduction licence, manufacturer endorsement or machine-specific compatibility is implied.
Vietnamese-language OEM store; machine sales region unresolved; Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.; contextual research only, no installed-component identification
Identify the Caterpillar 320C machine generation and the actual electrical assembly as separate research subjects. This investigation preserves the accepted model context and records what the available evidence can establish about vehicle or machine control unit vcu/ecm hardware.
Historical ECU hardware revision variants
Current Cat store has a320C-associated electronic-module research lead, with generic engine-function template prose that does not settle the module role. A machine controller is an identifiable hardware module operating within a particular software, parameter and harness configuration. Research those layers separately before evaluating a replacement. A familiar enclosure, product family or communication interface can help locate documentation, but it cannot establish the machine functions implemented by the offered unit or the approval needed to connect it to another installation. For Caterpillar 320C, retain controller hardware part, firmware, machine application, calibration are separate as observed evidence rather than completing the record from a similar machine. Engine ECU assembly stays with 02B EN10; 02C owns general machine ECU/VCU identity and interface.
Keep the machine and assembly evidence connected
Caterpillar 320C retains its existing canonical research owner. The investigation concerns vehicle or machine control unit vcu/ecm hardware. Read the source in its stated market and generation; a currently advertised feature can describe an option, a package or a later configuration. Record the issuer and complete designation on the actual assembly separately from the machine name. A housing mark, a general technology label and an orderable service identity answer different questions. Missing identifiers stay unknown. A prior repair or assembly replacement can also make the original build information insufficient to identify what is present now.
Resolve the remaining configuration privately
The retained manufacturer evidence supports the historical designation at its existing section. That evidence is not an electrical installation record. Preserve suffixes, regional naming and any unknown production interval; do not substitute the current similarly named machine for this historical subject. A qualified review should connect the actual hardware revision, harness and connector configuration, signal interpretation and applicable application or calibration evidence. Keep full PIN/serial identifiers, software credentials and service access private. Neither the absence of a fault nor a matching supply voltage establishes interchangeability. This page does not provide energized tests, wiring adaptation, programming steps or a replacement approval. The linked component research explains which evidence belongs in each part of that review.
Specification evidence record
Published values retain their exact reference scope. Empty fields mean the value has not been established; they never mean zero. General model associations do not establish installed or serial-specific fitment.
Caterpillar 320C: Historical ECU hardware revision variants: documented values and open identification fields
Property
Value / status
Scope and interpretation
Exact installed electrical component
Unverified
No actual assembly identification has been established for this machine.
Hardware, application and serial-specific compatibility
Unverified
Requires the actual assembly, configuration and qualified machine evidence.
Unresolved technical and source questions (1)
Exact component, hardware/software/calibration, harness and serial-specific compatibility remain unverified.
Original HeavyEQ analysis and selected source facts. No catalogue reproduction licence, manufacturer endorsement or machine-specific compatibility is implied.
Czech-language OEM store; machine sales region unresolved; Do not infer model years, serial breaks, machine compatibility or interchange from a family designation.; contextual research only, no installed-component identification
Identify the Caterpillar 950G machine generation and the actual electrical assembly as separate research subjects. This investigation preserves the accepted model context and records what the available evidence can establish about inclination, imu and motion sensors.
Inclinometer installed package investigation
The official English O-ring source names 950G and 950GII separately. This rechecks historical designation only and supplies no inclinometer package evidence. An inclination value is meaningful only with a reference frame and the conditions under which it was produced. Static tilt sensing, acceleration-compensated inclination and inertial measurements are related but distinct research subjects. None alone establishes a machine’s grade-control accuracy, rollover protection or approved overload function. For Caterpillar 950G, retain number of axes and coordinate frame/calibration as observed evidence rather than completing the record from a similar machine. Sensor series not equal certified machine grade control/tilt safety function.
Keep the machine and assembly evidence connected
Caterpillar 950G retains its existing canonical research owner. The investigation concerns inclination, imu and motion sensors. Read the source in its stated market and generation; a currently advertised feature can describe an option, a package or a later configuration. Record the issuer and complete designation on the actual assembly separately from the machine name. A housing mark, a general technology label and an orderable service identity answer different questions. Missing identifiers stay unknown. A prior repair or assembly replacement can also make the original build information insufficient to identify what is present now.
Resolve the remaining configuration privately
The retained manufacturer evidence supports the historical designation at its existing section. That evidence is not an electrical installation record. Preserve suffixes, regional naming and any unknown production interval; do not substitute the current similarly named machine for this historical subject. A qualified review should connect the actual hardware revision, harness and connector configuration, signal interpretation and applicable application or calibration evidence. Keep full PIN/serial identifiers, software credentials and service access private. Neither the absence of a fault nor a matching supply voltage establishes interchangeability. This page does not provide energized tests, wiring adaptation, programming steps or a replacement approval. The linked component research explains which evidence belongs in each part of that review.
Specification evidence record
Published values retain their exact reference scope. Empty fields mean the value has not been established; they never mean zero. General model associations do not establish installed or serial-specific fitment.
Caterpillar 950G: Inclinometer installed package investigation: documented values and open identification fields
Property
Value / status
Scope and interpretation
Exact installed electrical component
Unverified
No actual assembly identification has been established for this machine.
Hardware, application and serial-specific compatibility
Unverified
Requires the actual assembly, configuration and qualified machine evidence.
Unresolved technical and source questions (1)
Exact component, hardware/software/calibration, harness and serial-specific compatibility remain unverified.
Compatible Models > Wheel Loader names 950G and 950G II separately; identity evidence only. This O-ring source establishes no inclination sensor or grade package.
Limited factual reference and original commentary only; no catalogue reproduction or installed-fitment permission
Original HeavyEQ analysis and selected source facts. No catalogue reproduction licence, manufacturer endorsement or machine-specific compatibility is implied.