> For the complete documentation index, see [llms.txt](https://bell-505-guide.gitbook.io/bell-505-maintenance-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bell-505-guide.gitbook.io/bell-505-maintenance-guide/line-maintenance/removal-installation/hydraulic-power/removing-the-hydraulic-pump.md).

# Removing the hydraulic pump

## Preliminary requirements

### Required Conditions

<table><thead><tr><th>Action/Condition</th><th data-type="content-ref">Reference</th></tr></thead><tbody><tr><td>Remove the upper-left mid-fuselage access-panel (433AL).</td><td></td></tr><tr><td>Remove the upper-right mid-fuselage access-panel (433BR).</td><td></td></tr><tr><td>Drain the hydraulic system.</td><td><a href="/bell-505-maintenance-guide/line-maintenance/servicing/replenishing-and-depleting/draining-fluid-from-the-hydraulic-system.md">Draining fluid from the hydraulic system</a></td></tr></tbody></table>

### Consumables, materials and expendables

| Name          | Identification/References | Quantity |
| ------------- | ------------------------- | -------- |
| Caps or plugs | C-428                     | AR       |

### Safety conditions

{% hint style="warning" %}
Immediately after you disconnect the components, lines, and fittings, make sure to seal all the open ends and ports to prevent contamination.
{% endhint %}

{% hint style="info" %}
Remove only the parts that are necessary to do maintenance.
{% endhint %}

## Procedure

{% hint style="info" %}
If necessary, remove the pump adapter assembly
{% endhint %}

1. Disconnect the pump-to-filter pressure line from the hydraulic pump union fitting.
2. Disconnect the HRFM-to-pump suction line from the hydraulic pump union fitting.
3. Remove the bolts, washers, and hydraulic pump.
4. Remove and discard the packing from the hydraulic pump.
5. To remove the union fitting from the pressure port, if necessary, do the steps that follow:
   1. Remove the union fitting from the pressure port of the hydraulic pump.
   2. Remove and discard the packing from the union fitting.
6. To remove the union fitting from the suction port, if necessary, do the steps that follow:
   1. Remove the union fitting from the suction port of the hydraulic pump.
   2. Remove and discard the packing from the union fitting.
7. Put Caps or plugs (C-428) on all the open ends and ports of the hydraulic pump and fittings.