Frequently Asked Questions

Please see below for some of the more commonly asked questions, if you need more information please call or email us.

Common Questions

  • How do I contact you?
    You can ring us direct on 07 8495771, fax us at 07 8494432, email us at [email protected] or through the contact us link on this website.
  • How do I find out more about you?
    We are in the Yellow Pages and advertise in CAM, Deals On Wheels and Logger magazines. We also have a listing in publications such as A'Courts which gives an extensive listing on some of the products we can supply.
  • I am after specific parts for my hydraulic pump, swing motor or travel motor. What information do you require?
    The more information you can give us the easier it makes our job. Machine model, the model of your pump, swing or travel motor. All these details assist us in confirming that we have stock on the shelf or whether we have to procure from our overseas sources.
  • Do you sell outside of New Zealand?
    Yes we do. We have regular customers purchasing from us in Fiji, Vanuatu, Tahiti, Samoa, Australia, Indonesia, New Caledonia amongst others.
  • Do you take credit cards?
    We offer a full credit card payment facility over the phone for approved credit cards.
  • Warranty
    What warranty on parts and service?
    Warranty on parts is a limited liability one. Replacement parts only and subject to being returned to FPD parts department and subject to manufacturer's discretion and fitted by qualified trades personnel.
    Repaired items must be installed by suitably qualified trades people and follow installation instruction which is to be returned signed within 7 days of supply.All warranty is the sole discretion of FPDiesel ltd



Help me please

  • I have a cracked gear pump housing. What could cause this?
    Over pressure. Adjust pressure to correct specification.
    Spike pressure rises. Check hammer /accumulator
  • The set plate retainer is broken. What causes this?
    The set plate retainer is the piston retaining plate.
    PQ curve is set too high causing stress. Adjust to specififcations. Check for excessive case pressure.
    Restricted case leakage line.
    High internal leakage.
  • The barrel is split What causes this?
    The barrel is the block or rotor. It contains the pistons (plungers).
    Excessive pressure or spikes will cause a fracture. Add-on hydraulics can cause internal loading (spikes).
    Listen for engine lugging at idle as a good indicator.
  • Aeration .What does this mean?
    Aeration is when air is pulled into the system, usually on the intake side of the hydraulic pump.
    This will sound growly and functions will be spongy. The oil will look frothy milky or white.
    Repair the air leak, pump seal, clamp tension, hose etc
  • I hear of cavitation. What is this?
    Don't confuse cavitation with aeration. The sounds are similar. This is like trying to breathe through a wet handkerchief. This causes major damage. Piston slippers will fail, metal eroded etc. Check for oil viscosity, blocked pickup screen or intake hose, excessive revs. Get it fixed NOW.