37 20 001 Removing and installing/replacing DYNAMIC DRIVE valve block

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

DANGER OF POISONING if oil is ingested/absorbed through the skin!

RISK OF INJURY if oil comes into contact with eyes and skin!

IMPORTANT:

Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.

Do not draw off hydraulic fluid (risk of contamination).

NOTE: In all warranty cases you must always provide a fault memory printout, even where there is no fault entry, with the defective component. In addition, the valve block openings must be sealed with the protective caps (of the new part).

Necessary preliminary work:

Partially remove FRONT RIGHT WHEEL ARCH COVER (REAR SECTION)
Remove RIGHT UNDERBODY PANELLING

Disconnect return line with special tool 13 3 010 .

Fig 1: Disconnecting Return Line Using Special Tool (13 3 010)

G06890289

Courtesy of BMW OF NORTH AMERICA, INC.

Removing valve block on front right vehicle underbody:

Release control lines (1) to rear axle swivel motor on valve block.

Release control lines (2) to FA swivel motor on valve block.

Release supply and return lines (3) to valve block.

Allow hydraulic fluid to drain off through opened connections and dispose of properly.

Tightening torque 37 13 1AZ - 3AZ

Fig 2: Identifying Control Lines, Supply Lines And Return Lines On Valve Block

G06890290

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Hydraulic line and connection on valve block must be fitted with suitable seal plugs (32 1 270 ) immediately after removal!

Disconnect plug connections (1) and (2).

Fig 3: Identifying Plug Connections

G06890291

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip wiring harness.

Release screws (1) and remove valve block.

Tightening torque 37 14 7AZ .

Fig 4: Identifying Valve Block Mounting Screws

G06890292

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

When assembling, make sure that in succession only the seal plugs of the line to be fitted are removed.

When fitting lines, do not tilt connectors (sealing rings!) and connect fully before screwing.

Do not replace sealing rings on hydraulic lines.

Replace affected line if sealing ring is damaged.

Check seating and position of holders and line clips, correcting if necessary.

After installation:

Fill and bleed hydraulic system. See BLEEDING POWER STEERING UNIT or BLEEDING POWER STEERING (VEHICLES WITH DYNAMIC DRIVE) .
Check line connections for tightness
Carry out initial dynamic drive operation. See INITIAL OPERATION WITH TEST RUN (HYDRAULIC POWER STEERING) or START-UP WITH TEST RUN (ELECTRIC POWER STEERING) .