708-8H-04611 Travel Motor Case Assembly for Komatsu PC200-6 Excavator

708-8H-04611 Travel Motor Case Assembly

The 708-8H-04611 case assembly forms the main structural housing of the excavator travel motor. It provides the machined body required to locate, support and seal the internal hydraulic and rotating components during travel operation.

Unlike a simple protective cover, the motor case contains precision-machined mounting, sealing and internal contact surfaces. The condition of these areas directly affects internal alignment, hydraulic sealing and the service life of the rebuilt travel motor.

For this reason, a damaged motor case should be evaluated as a functional hydraulic component rather than only as an external housing.

Machined Surfaces Are Critical to a Successful Rebuild

A travel motor rebuild depends on correct internal alignment and reliable sealing. Bearing locations, mating faces, threaded areas and hydraulic passages in the case must remain within usable condition for the rebuilt motor to operate correctly.

Deep scoring, deformation or damaged sealing surfaces can allow internal leakage or prevent components from seating correctly even when new internal parts are installed.

Before reusing an old case, the machined surfaces should therefore be cleaned and inspected carefully rather than judging the housing only by its external appearance.

When the Motor Case Should Be Replaced

Replacement should be considered when inspection reveals structural or machining damage that may affect travel motor operation, including:

• Cracks in the case body or around mounting areas

• Damaged bearing or rotating component seats

• Severe scoring on internal machined surfaces

• Damaged sealing faces that may cause hydraulic leakage

• Stripped or damaged threaded mounting points

• Visible deformation caused by impact or previous internal failure

If metal debris has circulated through the motor after an internal failure, the case and its oil passages should also be checked carefully before deciding whether the housing can be reused.

Serial Number and Travel Motor Configuration Matter

Machines within the same excavator series may use different travel motor configurations depending on production period and machine serial number. A similar-looking housing is therefore not enough to confirm interchangeability.

When checking 708-8H-04611, the original machine information and travel motor configuration should be compared before an order is confirmed.

This is especially important when repairing older excavators that may have had a complete travel motor replaced during previous service work.

Information That Helps Us Verify the Housing

For faster identification, send as much of the following information as possible with your inquiry:

• Excavator model

• Machine serial number

• Travel motor identification information

• Front, rear and side photos of the original case

• Mounting hole arrangement

• Key case and mounting dimensions when available

These details help distinguish similar travel motor housings before shipment and reduce the risk of ordering a case for a different motor configuration.

Travel Motor Parts Support from Topvelsun

Topvelsun supplies replacement travel motor and final drive components for excavator repair, maintenance and parts distribution.

Send us part number 708-8H-04611 together with your machine and original housing information, and we can help verify the application before quotation.