Metabo Hpt - Hitachi 981-970C Stator Assembly 110V -115V

The Metabo Hpt - Hitachi 981-970C Stator Assembly 110V -115V is a critical drill hammer motor component. Stator-related faults can lead to power interruptions, overheating, reduced torque, or inconsistent motor operation.

Common Symptoms:

• Drill hammer fails to start despite power supply being present.

• Motor emits a burning odor during operation.

• Reduced drilling performance and weak hammering force.

• Excessive sparking around motor components.

• Intermittent power loss while the tool is running.

Motor Does Not Start

Quick Check: Inspect stator winding continuity using a multimeter.

Fix Suggestion: Replace damaged or open-circuit stator assembly.

Prevention Tip: Avoid prolonged overload conditions and voltage fluctuations.

Overheating During Use

Quick Check: Examine stator windings for discoloration or heat damage.

Fix Suggestion: Install a new 981-970C stator if overheating has degraded insulation.

Prevention Tip: Keep ventilation passages clean and allow cooling breaks.

Weak Drilling Power

Quick Check: Verify stator output and inspect for winding deterioration.

Fix Suggestion: Replace worn stator assembly to restore motor efficiency.

Prevention Tip: Use the drill hammer within recommended operating limits.

Intermittent Motor Operation

Quick Check: Check stator wire connections for looseness or damage.

Fix Suggestion: Secure connections or replace the stator if faults are found.

Prevention Tip: Periodically inspect internal electrical components during maintenance.

Customer Experience: After replacing the 981-970C stator assembly, my drill hammer regained consistent power and smoother operation, The installation resolved intermittent motor shutdowns, and the tool now performs reliably during demanding operation.