ZX110M and ZX160-1 Travel Reducer Repair: First-Stage Carrier and Sun Gear Checks

Sourcing internal travel reducer parts requires a clear connection between machine identification, part references and the installed assembly. For a planetary carrier supplied with a sun gear, the excavator model and product appearance are starting points for selection.

For the travel first-stage carrier assembly listed with Hitachi ZX110M and ZX160-1 application references, buyers can organise their review around three questions: which components need replacement, how they match the existing reducer, and what should be checked at delivery.

Establish a Clear Part Identification Record

The product information lists reference numbers 0796004, 0796009 and 0796012. Preserve the leading zero in each number when preparing enquiries, and check the corresponding descriptions and positions in the applicable parts catalogue.

Their appearance on one product page does not establish interchangeability. List the required carrier assembly, sun gear or associated shaft separately, with a quantity for each item.

ZX110M and ZX160-1 are the model references provided. Final matching should include the machine serial number, identification of the installed travel reducer and original component information. Where a reducer has previously been replaced, provide details of the current assembly.

Define the Carrier and Sun Gear Supply Scope

The product title uses “Travel 1st Carrier Assembly with Sun Gear,” while some illustrations use “Planetary Carrier Assy & Spline Shaft.” Ask the supplier to connect each illustrated component to an item on the quotation.

Confirm whether the carrier, planetary gears, pins, bearings, washers and accompanying sun gear or shaft are included. Identify the required reduction stage and position using the appropriate parts diagram.

Where an image shows an assembled unit beside a separate shaft, clarify whether the shaft illustrates a component already included in the assembly or represents an additional supplied item. Record the actual delivery quantity.

Dimension comparisons should cover the carrier profile, overall height, central connection, locating features and relevant gear tooth counts, face widths and tooth specifications. Record units, measurement locations and the component being measured.

Old-part photographs assist identification, but dimensions from worn surfaces should not become acceptance limits for replacement parts. Confirm permissible values using applicable drawings or service information.

For the accompanying sun gear or shaft, compare overall length, shoulder positions, gear-end details and applicable spline tooth count, diameter and connection length. Photographs of both ends and the side provide a clearer view of the interfaces.

Descriptions such as precision machining and accurate fit should be supported by dimensions or inspection records that can be checked.

The product information recommends inspecting mating gears, bearings, shafts and internal contact surfaces before reassembly. The workshop should establish the replacement scope from those findings and follow the service requirements for the specific reducer.

Record any additional parts during procurement and confirm whether they require separate quotations. This keeps the repair list and purchasing list aligned before delivery.

The listing states that a test report and outgoing inspection video are available. Request records corresponding to the supplied items, showing identification, principal interfaces, quantities and package contents.

For claims concerning wear resistance, heavy-duty use or stable transmission, request relevant material, heat-treatment or inspection information. The supplied listing does not specify a material grade, hardness, load rating or dimensional tolerances.

For enquiries, provide the machine serial number, reducer details, reference numbers, old-part photographs and required quantities. Use this identification record to agree the component list, inspection requirements and delivery arrangements.