4getr34 under drive pulleys install

8/2/2019 4getr34 Under Drive Pulleys Install

1/14

E4 6 M3 Un d e rd r i ve Pu l l ey I n s ta l l (Po we r s te e r i n g & Wa te r p u m p p u l l e y )

BY: 4getR34/m3forum

All tools used:

Flat head screw driver

8,10,13,16mm socketTorx 25,30,50

drive torque wrench1/4 ,3/8 wrench, extensions

32mm long wrench

1703 water pump pulley toolLoctite blue

Safety gogglesTrim removal tools or Needle nose pliers


2/14

Underside Splash Guard Access

Tools

8mm socket

Step 1:Put front of the car on jack stands and ensure

all proper safety for working under the car.

Step 2:Remove 7x 8mm screws from undersidesplash guard. It should slide out from front to

back end direction.

Notes: When re-installing the splash guard,its easier if you slide it into place and secure

it by starting with screws on the back(towards the rear of the car).


3/14

Rem ove Oi l Cooler

Tools:

T25

Step 1:Remove 2x T25 on either side of the oil cooler

plastic housing. See Figure 1.

Step 2:There are two clips on the oil cooler housing thathelps to hold it in place. Take the driver side of

the oil cooler and slide it towards the rear of thecar and it will come off. The oil cooler will hang

from the driver's side. There is no need todisconnect the hoses- just move it to the side

(See picture)

Oil cooler dangling. Source: evannever from m3fourm.

Looking up from bottom of the car, passenger side.


4/14

A i r I n ta ke Co mp o n e n ts Re mo va l

Tools:

PliersTrim removal tool

Flat head screw driver8mm socket

Step 1:

Remove 4x expanding rivets on suction hoodusing pliers. Pull the pin up with flat head, thenremove body of the rivets with pliers. Remove

suction hood (13) and air intake duct (12).

Step 2:

Disconnect 2x xenon wires. Remove xenon boxcover to access 2x 10mm hex bolt which secure

top cover of intake air filter cover.

Step 3:Remove top cover to intake air filter housing by

unlatching 2x clips. Loosen intake clamps with

flat head, you do not need to take the clampsoff.

Step 4:

Remove 8mm hex screws securing the xenon

housing to the chassis. Remove air filter. Wiggleand pull up the intake cover towards fender.

Cover up intake opening with tape.

Location of 8mm hex screws.


5/14

Fan Shroud Remova l

Tools:

T25 torx

flat head screw driverpliers

Step 1:

Disconnect wiring connector plugged into thefan shroud on the passenger side. There isanother wire relay under the one on the top,

you do not need to unplug this, just unlatch itfrom clips which retain it to the shroud.

Step 2:

Remove 4x amount of expanding rivets on thefan shroud. There are two each on the

passenger/driver side of fan shroud. They canbe accessed from the top of the car.

Pulling out one of the rivets using trim removal tool.


6/14

Step 3:

Remove 2x T25 from fan shroud from the top(One on each driver/passenger side).

Passenger side view.

Driver side view.


7/14

Step 4:Remove 2x T25 from the bottom of the shroud,

they are located on the bottom corners wherethe plastic shroud is mounted to the radiator.

From under the car, passenger side view.

From under the car, driver side view.


8/14

Step 5:

Remove passenger side shroud(4) and top shroud (5).

Step 6: Move the driver side shroud (6) towards the fender.There is no need to disconnect the radiator hose.

Fan Remov al

Tools:

32mm long wrench

1703 water pump pulley tool

Note: Ensure the fan is being held on while loosening 32m m nut and not dr opped.

Step 1:Loosen fan clutch by placing 32mm wrench on the nut and smacking from left to right (clockwise because

its reverse threaded.) with a hammer.

Step 1: (Alternative).

Using 1703 tool to seat the water pump pulley bolts loosen nut with 32mm wrench by torquing itclockwise.

Notes:

The screws are staggered and you have to align them by turning the 32mm wrench clockwise in order forthe 1703 tool to lock into place. Theres been discussions on the boards which mention that if you turn it

counter clockwise you will likely put strain on the timing chain. If you want to turn it clockwise, make sure

you have the car in neutral otherwise the car will move. I did not know this during my install and turn itcounter clockwise, I have not experienced any issues as a result of this. Obviously if you decide to use this

method to remove the fan, take the necessary precautions to ensure safety as your car will be on jackstands. I used stops at the rear wheels and backup jack stands under the car to ensure safety.

Step 2:

Remove the fan and center shroud together. Hang it with clutch standing up (to prevent damage toblades).

Notes: I wiggled the fan out from the bottom first before sliding out the shroud from the top

Driver side shroud moved.


9/14

Rem ove be l ts and tens ion f rom p u l leys .

Tools:

8mm socket or 16mm

Torx 50flat head screw driver

Note: Mark down direction of spin on the belts incase it

needs to be reinstalled.

Step 1:Relive tension from ac mechanical tensioner using a 16mm socket. This socket (4) is an attachment site

and is used for leverage. Pull it clockwise to detension. There are two rings on the pulley tensioner casingwhich will line up when you detension it - stick a thick allen key through to hold it in the de-tensioned

state. Remove belt.

Source: ECS Tunning

Source: Bently Manual


10/14

Step 2:

Remove cap (17) on tension pulley using a flathead screw driver by twisting along the edge.

Step 3:

Pull clockwise using a T50 on screw #7 to compress thehydraulic tensioner.

Step 3a (if you have a mechanical tensioner like the one used for the AC Condenser):

Use the same method as ac tensioner which comes with earlier e46 models. You can confirm the type oftensioner you have upon inspection.

Step 4:Remove serpentine belt

De-tension Idler pulley. Source: evannever from m3fourm.


11/14

Rem ove pu l leys

Tools:

10mm socket13mm socket

Step 1:

Loosen 4x 10mm bolts on water pump pulley.

Step 2:Remove power steering pulley

Step 3:Loosen 3x 13mm bolts on power steering pulley.

Step 4:

Remove water pump pump pulley

Step 4a:

Check for corrosion on bolts (use wire brush to remove rust if any).

Note: if any bolts are seized, use small amount of w d-40. Be careful not t o get any onto t he belt.

Pu l ley I ns ta l lTools:

10mm socket13mm socket

Step 1:Put small amounts of Locktite Blue on bolts. Mount new pulleys and keep the bolts loosen. (logo faces out

or shallow bevel face out for PS pulley).

Step 2:Install new underdrive belt (this should be included in your kit, do not use the original belt since the

underdrive pulley requires a longer, 1538mm E46 non M belt with OEM part #11281706545).

Step 3:

Install ac belt. Remove Allen Key used to hold it in the de-tensioned state.

Step 4:Install and cross tighten water pump pulley bolts based on the following recommended settings:

TMS/EVOSport ft*lb TMS/EVOSport in*lb Rogue ft*lb Rogue in*lb

water pump 7.4 89 7-8 84-96

power steering 16 192 7-8 84-96


12/14

Ver i f y i ns ta l lBefore installing the cap cover for the idlertension pulley, start the car and let it run to

make sure the belt is properly seated and doesnot fall off. Turn on ac to verify aux belt is also

working. Turn off car.


13/14

References:

BMP Design talking about pulleys on m54

http://www.youtube.com/watch?v=3jJgZgCJhvQ&feature=PlayList&p=EA75724F8A05B465&playnext_fro

m=PL&index=1

Why is the underdrive pulley heavier than stock?

http://www.uucmotorwerks.com/udp/udp_info/about.htm

After market underdrive pulleys

http://www.evosport.com/product/proddetail.aspx?partnum=EVO.PER.B46.P05

http://www.bavhypersports.com/products/driventrain/dtp5.htm (closed?)

http://www.rogueengineering.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=POWERPULLE

Y&Category_Code=PP

http://www.turnermotorsport.com/html/detail.asp?PRODUCT_ID=PPK-S54

http://www.modbargains.com/_e/E46_Performance/product/UUC_UnderDrive_Pulleys_E46_MW/UUC_Und

er_Drive_Pulley_Kit_99_03_E46.htm

http://www.koperformance.com/BMW/engine/underdrive_pulleys/victory_product_design/victory_product

_design_bmw_e46_m3_underdrive_pulleys.htm

After market DIY guides (Missing some details)

http://www.turnermotorsport.com/pages/tms_ppk_detail.pdf

http://www.rogueengineering.com/pdf/re_e46m3_pulleys.pdf

Other Related DIY

(S54)

http://www.myonlinegalleries.com/LoadGallery.aspx?g=9000641680640901

http://www.m3forum.net/m3forum/showthread.php?p=4941092&posted=1#post4941092

http://www.m3forum.net/m3forum/showthread.php?t=124068&highlight=changing+belts&page=2

(M54/M52)

http://forums.bimmerforums.com/forum/showthread.php?t=1473825&highlight=pulley (mech adjusting

pulley)

http://forum.e46fanatics.com/showthread.php?t=483472&highlight=pulley

http://home.comcast.net/~jns-johnson/pulleyinstall.htm

http://www.bmw330ci.net/maintenance/completecoolant.php

http://forum.e46fanatics.com/showthread.php?t=634490&highlight=oil+cooler

http://forum.e46fanatics.com/showthread.php?t=634490

Intake

http://www.m3forum.net/m3forum/showthread.php?t=249779http://www.youtube.com/watch?v=WDsGAYwNb7M(M54)

AC tensioner pulley

http://www.youtube.com/watch?v=zaXmp7sFVj4

http://www.argyrides.eu/bmw/mods/wp_exp_ten/images/07B.jpg

Alternator pulley (Did not do)

http://www.m3forum.net/m3forum/showthread.php?t=227995&highlight=water+pump+pulley&page=3

http://forums.m3cutters.co.uk/showthread.php?t=10943&highlight=pulley


14/14

Fan

http://www.m3forum.net/m3forum/showthread.php?t=168780&highlight=water+pump+pulley&page=3

http://www.youtube.com/watch?v=GuKguZBW_MA&feature=PlayList&p=338E4EAF7E102DBC&playnext_f

om=PL&index=12

http://www.m3forum.net/m3forum/showthread.php?t=221529&highlight=fan

http://forum.e46fanatics.com/showthread.php?t=696330&highlight=

http://www.m3forum.net/m3forum/showthread.php?t=221529

http://www.m3forum.net/m3forum/showthread.php?t=295244 (m3)

Releasing belt

http://www.youtube.com/watch?v=ENg25sIjNh0

http://www.pelicanparts.com/bmw/techarticles/E36-Belt-Replacement/E36-Belt-Replacement.htm


http://forum.e46fanatics.com/showthread.php?p=5440016#post5440016


Alternator

http://forums.m3cutters.co.uk/showthread.php?t=10943&highlight=pulley

How to loosen hydraulic (not mechanical)


Hydraulic tensioner composition

http://forum.e46fanatics.com/showthread.php?t=410372&highlight=belt+tensioner

Hydraulic tensioner removal

http://www.youtube.com/watch?v=lrNz6zZiA_U

http://www.m3forum.net/m3forum/showthread.php?t=323671 (discussion about just the pulley removal)

http://forums.bimmerforums.com/forum/showthread.php?t=1284446&highlight=pulley

(mechanical and hydrolic tension unit)

Mechanical Belt Tensioner Assembly.jpg (ac?)

Hydraulic Accessory Belt Tensioner Assembly.jpg (accessories?)

Idler pulley (torx 50 to 40nm)

http://www.youtube.com/watch?v=asu3FRyf7Ww&feature=player_embedded


http://www.argyrides.eu/bmw/mods/wp_exp_ten/images/08.jpg

Torque Converter

http://www.pitt.edu/~rsup/touqueconv.html

New belt

http://www.pelicanparts.com/cgi-bin/smart/more_info.cgi?pn=11-28-1-706-545-

M21&catalog_description=Belt%20for%20Alternator,%20Water%20Pump%20and%20Power%20Steering,

%20BMW%20E46%203%20Series,%20All%20Except%20M3%20(1999-05),%20Each%20%20%20%20

RE and Stock Pulley Measurements:

http://www.m3forum.net/m3forum/showthread.php?t=247242&highlight=pulley+weight&page=4

4getr34 under drive pulleys install

Documents