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BMW E39 Power Steering Pump Removal
 
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Pelican Technical Article:

BMW E39 Power Steering Pump Removal

Kerry Jonsson

Time:

4 hours4 hrs

Tab:

$ 200

Talent:

****

Tools:

10mm wrench or socket with ratchet, small thin pick or diagonal cutting pliers, flat head screwdriver

Applicable Models:

BMW 525i Sedan/Wagon (2001-03)
BMW 528i Sedan/Wagon (1997-00)
BMW 530i Sedan (2001-03)
BMW 540i Sedan/Wagon (1997-03)

Parts Required:

Power steering drive belt, power steering pump pulley,

Hot Tip:

Be careful when taking off banjo bolts and lines and don't lose sealing washers or replace them.

Performance Gain:

Stop power steering fluid leak, fix no power assist problem

Complementary Modification:

Replace drive belt and power steering fluid reservoir as the same time

The job of the power steering pump is to generate hydraulic pressure. As you turn the steering wheel this hydraulic pressure is supplied to your steering gearbox and helps move the steering linkage left and right. This hydraulic pressure can reach 2000 to 3000psi from the power steering pump. If the pump were to fail it could not generate the pressure necessary to offer power assist. Replacing the pump will restore the necessary pressure for proper power steering assist. In this tech article we will go over all the steps to replace your power steering pump.

In order to remove your power steering pump you need to remove the accessory drive belt. See our tech article on drive belt removal and follow those steps first.

Power Steering Pump Removal Eight Cylinder Engine:
Working at the front of the power steering pump on the lower left side of the engine remove the three 13mm bolts (green arrows) that hold the pulley onto the pump flange and remove the pulley.
Figure 1

Working at the front of the power steering pump on the lower left side of the engine remove the three 13mm bolts (green arrows) that hold the pulley onto the pump flange and remove the pulley.

This photo illustrates the bottom of the power steering pump.
Figure 2

This photo illustrates the bottom of the power steering pump. Remove the 10mm bolt (green arrow) that mounts the transmission lines to the pump.

We are now looking at the back of the pump.
Figure 3

We are now looking at the back of the pump. With a 21mm wrench remove the banjo bolt that holds on the rear line of the pump. Be careful not to lose the two washers that sit on each side of the banjo bolt.

While holding the transmission lines out of the way remove the 19mm banjo bolt that holds on the side mounted line to the pump.
Figure 4

While holding the transmission lines out of the way remove the 19mm banjo bolt that holds on the side mounted line to the pump. Be careful not to lose the two washers that sit on each side of the banjo bolt.

On top of the back of the pump remove the 13mm nut that mounts the rear power steering pump stud.
Figure 5

On top of the back of the pump remove the 13mm nut that mounts the rear power steering pump stud.

Working at the front of the pump remove the two 13mm mounting fasteners that hold the pump on to the timing case cover.
Figure 6

Working at the front of the pump remove the two 13mm mounting fasteners that hold the pump on to the timing case cover.

Remove the pump by moving it towards the front of the car in the direction of the blue arrow.
Figure 7

Remove the pump by moving it towards the front of the car in the direction of the blue arrow. Installation is the reverse of the removal steps. Position the power steering pump in front of its mounting point and move it toward the back of the car while aligning the three mounting points (two in the front and one in the rear) and tighten the bolts. Install the banjo bolt washers, banjo bolt and line in the side of the power steering pump. Then install the rear banjo bolt washers, banjo bolt and line to the back of the pump. Fit the pulley to the pump and tighten the three bolts that mount the pulley to the power steering pump flange. After reassembly fill the system with BMW approved power steering fluid and start the engine. Turn the steering wheel from lock to lock to purge all the air from the system. Let the car sit for a few minutes to let the air rise out of the reservoir. Repeat this process until you no longer see air bubbles come out of the power steering fluid.

Power Steering Pump Removal Six Cylinder Engine:
Power Steering Pump Removal Six Cylinder Engine - Locate the power steering pump under your vehicle at the front.
Figure 8

Locate the power steering pump under your vehicle at the front. Using a 17 mm wrench, remove power steering pump high pressure line. (green arrow) The high pressure steering line is sealed with an O-ring. Be careful not to lose the O-ring when removing line. It can get stuck in pump and fall out when pump is removed. Once the line is removed, inspect O-ring and replace if necessary, (O-ring is available separately from Pelican Parts).

Next, using a pair of diagonal cutters, cut power steering return hose clamp.
Figure 9

Next, using a pair of diagonal cutters, cut power steering return hose clamp. Then remove return hose from pump. (green arrow) Remove hose slowly, have oil pan ready to catch PS fluid.

Remove three power steering pump 13mm fasteners.
Figure 10

Remove three power steering pump 13mm fasteners. (green arrows) Fasteners are different lengths, mark locations for help when reinstalling. With fasteners removed, push power steering pump down and away from oil filter housing bracket. Once power steering pump is separated from oil filter housing, remove from engine compartment.

Place the power steering pump on your work bench.
Figure 11

Place the power steering pump on your work bench. Remove pulley mounting fasteners (green arrows), then transfer pulley over to new power steering pump. Pump pulley is made of plastic, be careful when removing. If pulley is stuck, work it side to side, do not use excessive force.

Once pulley is removed, transfer power steering pump mounting bracket from old pump to new.
Figure 12

Once pulley is removed, transfer power steering pump mounting bracket from old pump to new. Remove T40 Torx fasteners (yellow arrows) and install brackets on new pump. Next, install pulley onto new power steering pump. Then lower new power steering pump into engine compartment. Install power steering pump fasteners and tighten. Then reassemble remaining items in reverse order of removal. Once complete, fill and bleed power steering system as noted below.

Bleeding power steering pump:
Bleeding power steering pump- Before starting engine, fill power steering reservoir with clean fluid to MAX level on dipstick.
Figure 13

Before starting engine, fill power steering reservoir with clean fluid to MAX level on dipstick. Start engine and turn steering wheel fully left and right 3 times. Turn engine off, check fluid level, add fluid until it reaches MAX on dipstick. When full, fluid should be clear and foam free. Foam or bubbles is a sign of air in the system.

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Page last updated: Sat 12/3/2016 02:04:51 AM