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コマツ PC1250 掘削機の油圧ポンプの過熱と流量損失のトラブルシューティング
A technical guide on diagnosing low hydraulic pressure, oil overheating, and swashplate response delay in Komatsu PC1250-7 and PC1100-6 main hydraulic pumps.
小松 PC1100 & PC1250 メイン油圧ポンプ (708-2H / 708-2L シリーズ): 選定、互換性、故障解析
Engineering guide covering application scenarios, part cross-referencing (708-2H-00322, 708-2L-00522), and root-cause failure analysis for Komatsu PC1100-6 and PC1250-7 main hydraulic pumps.
油圧ポンプを交換するとすぐに摩耗してしまうのはなぜですか?
Replacement excavator hydraulic pumps often fail prematurely because contamination, incorrect installation, poor oil/filter condition, system pressure or heat issues, and other hydraulic component problems remain unresolved. Proper cleaning, inspection, installation, and commissioning are essential to prevent repeated pump failures.
掘削機の油圧ポンプとメインコントロールバルブ: 本当の問題を特定するには?
This blog explains how to distinguish between excavator hydraulic pump and main control valve problems by comparing symptoms, such as whether all functions or only specific circuits are affected. It also outlines a systematic diagnostic procedure involving oil checks, filters, pressure testing, function comparison, and valve inspection.
油圧ショベル用 REXROTH (UCHIDA) AP2Dシリーズ油圧ポンプ
This guide covers the Rexroth (Uchida) AP2D series of tandem variable-displacement hydraulic pumps for 1.2–8 tonne mini and compact excavators, including AP2D12 through AP2D36 models rated at 350 bar and 3500 rpm. It provides OEM application references, cross-reference codes, and buyer guidance for sourcing exact pumps, control variants, and spare parts.
掘削機の油圧ポンプの騒音の原因は何ですか?
This blog explains common causes of noise in an excavator hydraulic pump, including air ingestion, cavitation, low or contaminated oil, worn bearings, blocked filters, and incorrect oil selection. It also outlines symptoms and preventive maintenance steps to reduce downtime and extend pump life.
コマツ PC1250 掘削機の油圧ポンプの過熱と流量損失のトラブルシューティング
2026-09-24
油圧ポンプを交換するとすぐに摩耗してしまうのはなぜですか?
2026-09-21
油圧ショベル旋回モーター：KAWASAKI M2X & M5Xシリーズ 技術詳細解説
2026-09-14
