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 $250 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.
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Note: the pump ships filled with fluid, which makes swapping our rebuilt pump with your original one a quick plug-and-play operation!
For the core return, simply put the same plugs that we put into the hydraulic line ports of the rebuilt pump into your original pump, re-use our packaging, and ship the core back to us. Our pump box easily fits inside a USPS Priority Mail Medium Flat Rate Box.
Standard shipping inside the US is $12.50, FedEx Priority Overnight shipping is only $40 inside the US.
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 (5-mm) Allen bolt. It is the one closest to the level marker on the reservoir. Make sure to have a fitting 5-mm outside hex 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, unless you have a hard time getting the fill plug open.
Removal of the pump from the car is easy - this is "plug and play":
1) Remove panels inside the trunk to create access to your pump, located in the forward left corner of your trunk.
2) Remove the single bolt that mounts the pump in its foam cover against the car's chassis.
3) Pull the pump out of the protective foam housing, and unplug it from the main wiring harness.
4) Rotate the two retaining discs that hold all hydraulic hoses. Rotate counter-clockwise some 10-15 degrees, until the hoses can be pulled out. No need to loosen or fasten any bolts for this - the plates will simply click into place. No need to mark the hose locations - each hose has a number printed on it near its metal fitting, and that number matches the number engraved on the retaining disc.
5) Drain the hydraulic fluid through the fill plug (it is good to replace old fluid, anyway), replace the plug, disconnect the remaining wires from the motor and the solenoid, wrap the pump in a large garbage bag, then inside another one, box up well, and send the pump to Top Hydraulics.
You can save some money by using Mercedes fluid 0009899103 or FeBi 02615 - they are fully compatible with your BMW 3-Series cabriolet hydraulics. Fill the pump through the fil plug. The fluid level is supposed to be within the round level marker on the reservoir when the convertible top is down. Do not overfill the reservoir. Adjust the fluid level after the top has cycled a few times. Give the pump motor a break (to cool down) latest after three complete cycles or 2 minutes of running time.The official BMW part number is 54347025595; p/n 8 234 530 or HB70346-002 are usually printed on the pump. Fits models ___
International customers: please select the $55 FedEx International shipping option during checkout - the option will appear after you have entered and saved your shipping address.