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Excavator Hydraulic Pump 708-1S-00260 708-1S-00270 708-1S-00254 Komatsu PC30MR-2 PC27MR-2 Main Piston Pump

Excavator Hydraulic Pump 708-1S-00260 708-1S-00270 708-1S-00254 Komatsu PC30MR-2 PC27MR-2 Main Piston Pump

Excavator Hydraulic Pump 708-1S-00260

708-1S-00260

Komatsu hydraulic pump for PC30MR-2

Place of Origin:

China

Brand Name:

CAVOYD

Model Number:

PC27MR-2 PC30MR-2

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Product Details
Product Name:
Hydraulic Pump Assembly
Part No:
708-1S-00260, 708-1S-00270, 708-1S-00254
Applicable Model:
PC27MR-2 PC30MR-2
Condition:
New / Rebuilt
MOQ:
1 Set
Price:
Negotiable
Payment Terms:
Western Union, T/T, Assurance
Supply Ability:
300 Sets / Month
Delivery Time:
3-8 Working Days
Packaging Details:
Wooden Case / Cartonwith Foam Protection, Or As Required
Transportation Method:
DHL, UPS, FedEx, Sea Freight
Warranty:
6 Months
Highlight:

Excavator Hydraulic Pump 708-1S-00260

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708-1S-00260

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Komatsu hydraulic pump for PC30MR-2

Payment & Shipping Terms
Minimum Order Quantity
1 set
Price
Negotiable
Packaging Details
Dimension: L40×W30×H30 cm
Delivery Time
3-8 days
Payment Terms
T/T
Supply Ability
300pcs/day
Product Description
Excavator Hydraulic Pump 708-1S-00260, 708-1S-00270, 708-1S-00254 Komatsu PC30MR-2 / PC27MR-2 Main Piston Pump Pressure Pump

The PC30MR-2 is a Komatsu mini crawler excavator. The hydraulic main pump is a main variable displacement piston pump. Common part numbers on the same platform: 708-1S-00260 / 708-1S-00270 / 708-1S-00254 (common to PC30MR-2 / PC27MR-2), plus a separate pilot gear pump.

Common Faults
  • Weak movement / slow operation: Internal leakage from worn main pump pistons/valve plate/slippers, reduced volumetric efficiency; insufficient pilot pump pressure causing abnormal displacement control.
  • Pump abnormal noise / squealing: Insufficient suction or air ingress, contaminated oil, internal pump wear.
  • Engine lugging / speed drop under load: Seized regulator/power control spool; pump stays at large displacement and absorbs excessive power.
  • High oil temperature: Severe main pump internal leakage, high-pressure oil converting to heat.
  • Oil leakage: Aged main shaft oil seal, worn end-cover O-rings; poor case drain causing excessive case pressure.
  • Jitter / pressure fluctuation: Air in the system, seized regulator, scored valve plate.
Purchasing Recommendations
  • Confirm the sub-model: PC30MR-2 / PC27MR-2 (-2 platform), and whether a pilot pump configuration is included.
  • Confirm main pump vs pilot pump: the 708-1S series is the main piston pump; the pilot gear pump is priced separately.
  • Verify part number application: 708-1S-00260 / 00270 / 00254 — confirm each unit's displacement/model application.
  • Confirm condition: new genuine / remanufactured / compatible (aftermarket) part.
  • For overhaul parts: cylinder block, valve plate, piston (slipper), retainer plate, swashplate, main shaft, bearings, seal kit.
  • After-sales: warranty of 6–12 months; fill with hydraulic oil before starting; after repair, replace filters and clean the oil tank.
Technical Illustrations
Excavator hydraulic pump component view showing internal parts

Hydraulic pump internal mechanism diagram

Pump assembly diagram with part identification

Piston pump technical illustration showing specifications

Hydraulic pump cross-section view

Pump component close-up showing detailed parts

Excavator pump installation view in machine

Hydraulic system schematic diagram

Pump maintenance diagram with service instructions

Technical specifications illustration with measurements

Component identification guide for parts

Pump assembly instructions step-by-step

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