ISO 4008-3:1987 PDF

Overview

ISO 4008-3:1987 - "Road vehicles - Fuel injection pump testing - Part 3: Application and test procedures" is a workshop-level procedural supplement to ISO 4008 Parts 1 and 2. It coordinates the detailed technical requirements from the other parts and referenced standards with practical procedural instructions needed to apply, validate and document fuel injection pump tests for compression‑ignition (diesel) engines.

Key topics and requirements

• Scope and purpose: Provides mandatory test conditions, recommended practices and procedural instructions for conducting ISO-conforming injection pump tests in workshops and test facilities.
• Test schedules and content: Defines the minimum information a test schedule must contain (pump identity, test type, injectors, high‑pressure pipe details, mounting, test speeds, test numbers, direction of rotation, peak pressure if >625 bar, warming/stabilization procedures, delivery values, tolerances).
• Equipment conformity: Test benches, measuring systems and high‑pressure pipes must carry manufacturer conformity documentation and ISO identification (see ISO 4008‑1 and ISO 4093 references). Test benches are to be supplied with operation/maintenance instructions and characteristic graphs.
• Calibration fluid: ISO 4113 calibration fluid is specified for ISO tests. Temperature must be maintained at 40 ± 2 °C and viscosity monitored weekly; fluid must not be used if viscosity at 40 °C exceeds 3.0 mm2/s or if it has been exposed to