Ohlins ST44 User manual

Compression damping adjuster
Use a flat screw driver to adjust the
compression damping
Rebound damping adjuster
Use fingers only to make adjustments
Spring pre-load adjuster (when provided)
Adjustments are made with a c-spanner.
The adjuster must be locked with the
nylon set screw provided
Mounting instructions
Öhlins shock absorber ST44
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The ST 44 shock absorber features the
following adjusters:
- Compression damping adjuster
- Rebound damping adjuster
- Spring pre-load adjuster
NOTE!
The shock absorber must be dialed to
settings for the specific vehicle, track
conditions and driver.
The adjusters for compression and rebound
have normal right hand treads.
Position zero (0) is when the adjusters are
turned clockwise into fully closed.
(maximum damping)
CAUTION!
Using too much force when closing the
adjusters can destroy important sealing
surfaces.
How to set damping
Turn counter clockwise (out) to open. Count
the clicks so you know in what position the
damping is set. Note settings before you test
drive, so you can make changes to optimize
the suspension for your driving style and the
track you are racing at. See Owners manual
for more detailed description.
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© Öhlins Racing AB. All rights reserved. Any reprinting or unauthorized use without the
written permission of Öhlins Racing AB is prohibited. Printed in Sweden.
ST44, Issued 01 03 28
Öhlins Racing AB, Box 722, S-194 27 Upplands Väsby, Sweden.
Phone [phone], fax [phone].
E-mail: [email protected]
www.ohlins.com
WARNING!
The shock absorber is provided with a
separate type reservoir filled with high pressure
nitrogen gas. To prevent danger of explosion,
study and make certain that you fully
understand the following information before
handling the shock absorber. The manufacturer
cannot be held responsible for damage to
property or personal injury that may result from
improper handling.
1. Never tamper with or attempt to
disassemble the cylinder or the reservoir.
2. Never expose the shock absorber to an
open flame or other excessive heat. The
shock absorber may othervise explode due
to too high pressure.
3. Be careful not to damage any part of the
gas reservoir. A damaged gas reservoir will
impair the damping performance or cause
malfunction.
4. Take care not to scratch the contact
surface of the piston rod of the cylinder; oil
could othervise leak out.
5. Never attempt to remove the plug at the
bottom of the nitrogen gas reservoir. Any
attempt to remove the plug implies serious
danger.
6. When scrapping the shock absorber,
follow the instructions for disposal.
Set-up data
Model
Length STN9B01/11 239.5 mm
STN9B02/12 299.5 mm
STN9B03/13 339.5 mm
STN9B04/14 399.5 mm
Stroke STN9B01/11 70
STN9B02/12 100
STN9B03/13 120
STN9B04/14 150
Rebound adj. 48 clicks
Compression adj. 25 clicks
NOTE!
The adjustment ranges can vary a few clicks
depending on what shim stack the shock
absorber is equipped with.
When delivered from Öhlins the settings are:
Rebound adj. 10 clicks
Compression adj. 10 clicks
End-eye complete
Part no Length (L)
5909-01 36
5909-02 58
5909-03 48
5909-04 68
L

Safety signs
Important information concerning safety
is distinguished by the following notations:
The Safety alert symbol means:
Caution. Your safety is involved.
WARNING!
Failure to follow warning instructions could
result in severe or fatal injury to anyone
working with, inspecting or using the sus-
pension, or to bystanders.
CAUTION!
Caution indicates that special precautions
must be taken to avoid damage to the sus-
pension.
NOTE!
This indicates information that is of im-
portance with regard to procedures
Before installation
Öhlins Racing AB can not be held responsi-
ble for any damage whatsoever to shock
absorber or vehicle, or injury to persons, if
the instructions for settings and maintenance
are not followed exactly.
Similarly the warranty will become null and
void if the instructions are not adhered to.
WARNING!
1. Installing a shock absorber, that is not
approved by the vehicle manufacturer, may
affect the stability of your vehicle. Öhlins
Racing AB cannot be held responsible for
any personal injury or damage whatsoever
that may occur after fitting the shock
absorber. Contact an Öhlins dealer or other
qualified person for advice.
2. Please study and make certain that you
fully understand all the mounting
instructions and the owner´s manuals
before handling this shock absorber kit. If
you have any questions regarding proper
installation procedures, contact an Öhlins
dealer or other qualified person.
3. The vehicle service manual must be
referred to when installing the Öhlins
shock absorber.
Kit contents
Before installing the shock absorber, please
check the contents of the kit. If anything is
missing, contact your Öhlins dealer.
Description Piggyback Hose model
Shock absorber STN9B01 STN9B11
STN9B02 STN9B12
STN9B03 STN9B13
STN9B04 STN9B14
Sticker Öhlins 00192-01 1
Sticker 00197-02 1
Set screw 05410-01 1
NOTE!
During storage and transportation, especially
at high ambient temperature, the oil and
grease used for assembling may run out in-
side the packing and damage the expanded
polystyrene packing material. This is not
unusual and is in no way detrimental to the
shock absorber.
Öhlins products are subject to continual
improvement and development.
Consequently, although these instructions
include the most up-to-date information
available at the time of printing, there may
be minor differences between your suspen-
sion and this manual. Please consult Öhlins
if you have any questions with regard to the
contents of the manual.
WARNING!
1. It´s advisable to have an Öhlins dealer or other
qualified person to fit your shock absorber.
2. Instructions in the vehicle service
manual are to be followed when changing
the shock absorber.
3. When working on a lifted vehicle it must
be securely supported to prevent it from
falling.
NOTE!
Make sure that all bolts are tightened to the
correct torque and that nothing fouls or
restricts movement of the shock absorber
when the suspension is being fully
compressed or extended.
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Mounting instructions
Mounting of spring seats
1
Screw the upper spring seat (model 05904-
01, 2" or 05904-02, 2 1/4") in position on
the damper tube. Lock it with the nylon set
screw provided.
Mounting of end eye
2
Put the shock absorber upside down in a vice:
Use tool 0727-03 to protect the piston shaft.
3
Remove the protective plastic lid from the
piston shaft end.
CAUTION!
The adjustment shaft is loose inside the pis-
ton shaft. Take care that it does not fall out.
4
Mount the end eye to the piston shaft. Use
Loctite 270 or similar. Tighten it to correct
torque; 80 Nm.
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6
The end-eyes
differ in length
L
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Measure the length of the shock absorber
(L) and check against specification.
NOTE!
Make sure that the spring retainer is in
correct position before setting the spring
preload.
Mounting of spring
6
Mount the spring and the spring retainer
(05907-01, 2" or 05907-02, 2 1/2"). Use tool
0747-01.
7
Apply some red grease (00146-01) to the
piston rod before mounting the shock
absorber to the car.