Rebuild service for Hydro Unit aka Hydraulic Pump 54347025595
  • Rebuild service for Hydro Unit aka Hydraulic Pump 54347025595
  • Rebuild service for Hydro Unit aka Hydraulic Pump
  • 54347025593 54347025599 54347025600 54348243269 54348236956 54347025592

Rebuild service for Hydro Unit aka Hydraulic Pump

$500.00

You send in your malfunctioning E46-Series hydro unit, and Top Hydraulics rebuilds it. The rebuild includes electric motor replacement or rewinding if necessary, service and check of all internal pump components, upgrade of internal seals in the pump, and full bench test to assure that factory specs are exceeded. Three years warranty.

p/n 8 234 530 or 54347025595 or HB70346-002

Order Method:
Quantity

 

No sales tax for orders in the USA

 

We provide world class technical support

 

3-year standard warranty (should last decades)

The most common failure symptom on used BMW E46 hydro units is a gradual loss of pressure and power. There are various possible reasons for gradual power loss inside the pump/hydro units, ranging from degrading electric motors through pump pistons wearing out and check valves bypassing, to pressure regulators failing. Top Hydraulics will check that all these components meet or exceed factory specs and exchange or upgrade them if necessary. Bench testing includes all valve functions, pressure test, flow test, extended load test, and test for leaks, to make sure that factory specs are exceeded before the pump ships back. Beware when purchasing used pumps that those may actually be units that are still pumping, but are not able to complete the convertible top's opening or closing cycle without manual assistance.

Some of these pumps have external leaks (you may find the foam casing soaked in hydraulic fluid). The most common source for external leaks on these pumps are the port seals. Port seals are tiny seals of special shape that are sealing the hydraulic lines when they are plugged into the pump. The port seals are behind brass bushings. These bushings are pressed into the pump housing, and they are made to 1/100 mm precision. Any DIY repair attempt would destroy the bushings. Top Hydraulics replaces the original port seals with an improved version made of Viton, which has practically unlimited shelf life. Before assuming that the pump is leaking externally, check the hydraulic lines going into the pump to make sure they are dry.

 

The fill plug is a metric Allen bolt. It is the one closest to the level marker on the reservoir. Make sure to have a fitting Allen wrench, so that you do not strip the inside hex of the plug. Please drain the fluid through the drain plug before shipping the pump to us.

You can save some money by using Mercedes fluid 0009899103 or FeBi 02615 - they are fully compatible with your BMW 3-Series cabriolet hydraulics.

Additional cost applies if the reservoir arrives broken or the aluminum ring around the motor has been crushed beyond repair. Please wrap the pump in absorbent material and put plastic bags around it, buffer your parcel well inside, ideally double-box, and tape up well. Take special care to protect the thin aluminum wall at the end of the reservoir from getting crushed in transit - it seals the end of the reservoir. Standard return shipping inside the US is $15 (shipping to businesses via FedEx 2-Day Service and shipping to residences via USPS Priority Mail), FedEx Priority Overnight shipping is only $45.50 inside the US..

International customers: please select the $85 FedEx International shipping option during checkout - the option will appear after you have entered and saved your shipping address.

54347025595

Specific References

Related Products:

Top Hydraulics upgrades the seals in these cylinders with far superior material. It is highly recommended to upgrade the tonneau/case cover cylinders in pairs. You send in your cylinder(s) first, or order from our stock with the core exchange option below. 

BMW P/N: 54348236956

Price
$125.00
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This is a special Core exchange option only.

We ship you a pair of E46 Bow Tension Cylinders from our inventory, and you send us back your old parts for a refund of your $300 deposit.

NOTE: If you have a 2003 model, we will need to know if your left bow tension cylinder has a detachable (clip-on) aluminum line fitting before you place your order

Price
$750.00
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Rebuild/upgrade service for left bow tension cylinder in 2000 - 2006| BMW E46 convertible chassis

It is highly recommended to upgrade the bow tension cylinders in pairs. You send in your cylinder(s) first.

Price
$125.00
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New, Extended Hydraulic Line # 34 for 2003-2006 BMW E46 convertibles.

Slightly extended version of the OEM hose, which is not available from BMW. Only available from Top Hydraulics. This line is for the newer version bow tension cylinder on the left side, top fitting, where the lines are attached via a screwed on clamp.

Price
$179.99
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BMW E46 1998-2006|330ci, 325ci, 323ci, M3, etc

 

Rebuild service for Hydraulic Valve Block aka Control Unit BMW p/n 54347025592

Send in your part for for rebuild/upgrade service, or get immediate shipment from our inveentory if you choose optional core exchange.

Price
$350.00
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New, Extended Hydraulic Line # 31 for 2003-2006 BMW E46 convertibles.

Slightly extended version of the OEM hose, which is not available from BMW. Only available from Top Hydraulics. This line is for the newer version bow tension cylinder on the left side, bottom fitting, where the lines are attached via a screwed on clamp.

Price
$179.99
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Package deal! Includes Rebuild/Upgrade of all 6 hydraulic cylinders and the hydraulic pump unit.

You send in your parts first and we will upgrade them to better than new condition, or choose the core exchange option and we ship from our inventory first.

 

Price
$1,100.00
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 Package deal!

You send in your cylinders first; we will upgrade them to better than new condition. Optional core exchange has an inventory management surcharge, plus a $600 deposit.

Includes two main drive cylinders, two bow tension cylinders, and two tonneau cover cylinders.

Price
$1,400.00
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Top Hydraulics upgrades the seals in these cylinders with far superior material. It is highly recommended to upgrade the tonneau/case cover cylinders in pairs. Send in your cylinders first, or order from our stock with the core exchange option below.


BMW part number 54348243269

Price
$125.00
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Rebuild/upgrade service for single main lift cylinder 2000 - 2006| BMW E-46 chassis

Rebuild/upgrade service (using best seals available ) for BMW convertible hydraulic lifting system. It is highly recommended to upgrade the main lift cylinders in pairs. Send in your cylinders or order from our stock with optional Core Exchange.

Price
$125.00
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It is highly recommended to upgrade the bow tension cylinders in pairs. You send in your cylinder(s) first.

Core exchange is available only for pairs of bow tension cylinders - see our separate listing.
Top Hydraulics replaces and upgrades all seals in this cylinder, including the port seals where the hoses go into the cylinder housing.

Price
$225.00
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Replace one crimped-on Hydraulic Line # 31, 32, 33, or 34 on Bow Tension Cylinders for 2000-2003 BMW E46 convertibles.

Early model years (cut-off somewhere in 2003) have bow tension cylinders aka clamping bar cylinders with hydraulic lines that cannot be removed from the cylinder. Send in your left side cylinder, and Top Hydraulics will replace the line with OEM material.

Price
$200.00
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Special option: Core exchange. This means that you get a rebuilt & upgraded pump from Top Hydraulics' inventory first, then you ship back your original pump for credit of your $200 core refund. Top Hydraulics ships a pump as pictured: no mounting frame and no wiring harness, in order to keep the shipping cost low. You get a pump that has been rebuilt to outlast and outperform brand new ones.

BMW part number 54347025595, see more detailed notes below. Aka 54348234530. Number printed on the pump is normally 8 234 530.
Please make a special note in your order if you have a model year 2000 or 2001.

Price
$725.00
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