Vinten Quattro SL User manual

Quattro SL Pedestal
V3963-0002
Operating instructions
V3963-4981/6
CN
JP

Quattro SL
PEDESTAL
Publication Part No. V3963-4981 Issue 6
English . . . . . . . . . . . . . . . . . . . Page 3
Deutsch . . . . . . . . . . . . . . . . . . Seite 21
Español . . . . . . . . . . . . . . . . .Página 41
Français . . . . . . . . . . . . . . . . . . Page 59
Italiano . . . . . . . . . . . . . . . . . .Pagina 77
Português . . . . . . . . . . . . . . .Página 97
日本語 . . . . . . . . . . . . . . . . . . ページ 115
中文 . . . . . . . . . . . . . . . . . . . . . . 页码 133
Copyright © the Videndum Group plc 2018
All rights reserved throughout the world. No part ofthis document may be stored in a retrieval system,
transmitted, copied or reproduced in any way including, but not limited to, photocopy,photograph,
magnetic or other record without the prior agreement and permission in writing from the Videndum
Group plc.
Vinten is a registered trademark of the Videndum Group Plc.

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Preface
Thank you and congratulations on your new Quattro SL pedestal
from Vinten
We want you to get the most from your new Quattro SL pedestal, and therefore encourage you to read this
operators guide to familiarise yourself with its many features, some of which may be new to you. It also
covers essential health and safety information and a section on maintenance that will ensure you keep your
new product in perfect condition.
To receive additional benefits, register with Vinten now, on line by visiting www.vinten.com/register.
Features and benefits of your new Quattro SL pedestal
The Quattro SL pedestal has been specifically designed to meet the exacting demands of camera
operators working with full facility studio cameras. The Quattro SL pedestal offers many unique features to
assist in framing and accurate and repeatable shot positioning.
• Suitable for a wide range of payloads up to 80 kg (176 lb).
•Narrow base and small footprint allow you to manoeuvre into smaller areas, tight sets and
standard 30-inch doorways.
• Low-friction wheels reduce the steering effort, providing a sensitive feel.
• On-shot stroke of 100 cm (39.4 in.) and a maximum height of 147 cm (58.3 in.) provides
increased creative angles and means that raised platforms are not needed to obtain eyeline.
• Balance profile reduces effort across the full height range, reducing the effort needed to raise
the column.
• The adjustable skirt is protected by the base, reducing damage and improving reliability and
allowing close floor clearances for small-diameter cables.
• The foot-operated brake allows the pedestal to be parked safely and securely.
Once again, thank you for choosing the Quattro SL
We are confident it will give you many years of reliable
performance

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Safety - Read This First
Warning symbols in this operators guide
Where there is a risk of personal injury, injury to others, or damage to the pedestal or
associated equipment, comments appear, highlighted by the word WARNING! and
supported by the warning triangle symbol.
Warning symbols on the pedestal
On encountering the warning triangle and open book symbols it is imperative that you
consult this operators guide before using this pedestal or attempting any adjustment or
repair.
Critical data
Mass
Pedestal 144 kg (317.4 lb)
Trim weights (11 off) total 7.5 kg (16.5 lb)
Load
Maximum load 80 kg (176.4 lb)
Pressure
Maximum pressure 13.1 bar (190 psi)
Minimum pressure 3.5 bar (50 psi)
≤80 kg
144
kg
≤13.1 bar

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Technical data
Payload 80 kg (176 lb)
Pedestal weight 144 kg (317.4 lb)
Trim weights
main (5 x 1.0 kg) 5.0 kg (11 lb)
auxiliary (6 x 0.5 kg) 3.0 kg (6.6 lb)
Minimum height 47 cm (18.5 in.)
Maximum height 147 cm (57.8 in.)
On-shot stroke 100 cm (39.4 in.)
Doorway tracking width 81 cm (32 in.)
Transit doorway width
Small steering ring 74.5 cm (29.3 in.)
Large steering ring 82 cm (32.3 in.)
Max working pressure 13.1 bar (190 psi)
Relief valve pressure 14.5 bar (210 psi)
Min working pressure 3.5 bar (50 psi)
Usage
The Quattro SL Pedestal is designed for use in television studios to support and balance a pan and tilt
head, camera and ancillary equipment weighing up to 80 kg (176 lb).
The Quattro SL Pedestal is intended for use by television camera operators.
WARNING! If you do not understand how to operate this pedestal, do not attempt to
use it.
Maintenance beyond that detailed in this Operators Guide must be
performed only by competent personnel in accordance with the
procedures laid down in the Maintenance Manual.

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Contents
Page
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety - Read This First . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Critical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Operation
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Column check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Steering mechanism checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Fitting the load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pressurizing the pedestal
Pressurizing the pedestal from an external pressure source . . . . . . . . . . . . 12
Pressurizing the pedestal using the Vinten portable pump. . . . . . . . . . . . . . 12
Balancing the load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Using the Quattro SL pedestal
Height adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Steering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Cable clamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Cable guard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Transportation and storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Servicing
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Routine maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Steering alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Changing the steering ring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

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Quattro SL Pedestal (Fig 1)
(1) Weight tray
(2) Trim weight - auxiliary
(3) Safety catch
(4) Steering ring
(5) Moving column
(6) On-shot clamp
(7) Pressure gauge
(8) Trim weight stowage
(9) Lifting aperture
(10) Cable guard adjustment knob
(11) Cable guard height indicator
(12) Position indicator
(13) Cable clamp
(14) Parking brake pedal
(15) Crab/steer changeover pedal
(16) Schrader valve and cap
(17) Drag control
(18) Lock spigot
(19) Trim weight - main
(20) Four-bolt mounting plate
(21) Steering indicator

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Introduction
The Quattro SL pedestal comprises a central four-stage telescopic column mounted in a steerable base.
The moving column (5) is pressurized from an external pressure source. A markable height indicator scale
is provided on the second section of the column allowing the operator to record camera heights for shots.
A weight tray (2) is attached to the top of the column and trim weights (1, 19) are provided for fine balance.
The weight tray also provides a standard four-bolt mounting (20) for a pan and tilt head and the pedestal
is steered by means of a steering ring (4) mounted on its underside. Large- and small-diameter steering
rings are available and are fitted with indicators (21) to show the straight-ahead position.
The column is locked in the fully-depressed position by two safety catches (3) on the weight tray which
engage with spigots (18) at the base of the column. An on-shot clamp (6) and a drag control (17) are
provided at the base of the column.
The base is carried on three sets of twin 125 mm (5 in.) wheels. A continuous height-adjustable cable guard
with infinite positions is provided, raised and lowered by a single control knob (10) with a height indicator
(11) below. Stowage for the trim weights is provided on the upper surface of the base (8) and two cable
clamps (13) are fitted to the vertical sides. A brake pedal (14) controls the parking brake and a crab/steer
pedal (15) allows the operator to switch between conventional and crab steering. Position indicators (12)
on each side of the base allow the camera operator to accurately position the pedestal. Lifting apertures
(9) are provided on each face of the base and these also provide access to the wheels.

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Operation
Unpacking
Unpack the pedestal, ensuring that all transport packing and retaining fixings are removed.
Column check
Ensure pedestal pressure is approximately 3.5 bar (50 psi). Increase or reduce as necessary, using the
Schrader valve (16).
Remove the self-adhesive safety catch warning covers (if fitted).
Push down on the weight tray (1) against residual pressure. At the safety catches (3), push the rocker
switches to the unlocked position. Allow the column to extend under hand restraint.
Exercise the column several times over its full stroke.
Push down on the weight tray (1) and push the safety catch rocker switches (3) to the locked position.
Steering mechanism checks
Two types of indicator may be fitted on the steering ring to show the straight-ahead position. One type
consists of a plastic moulding (21) as shown in Fig 1. The other comprises two groups of rivets on the
underside of the steering ring, as shown in Fig 5.
Align a steering indicator (21) with the crab/steer pedal (15). Press the pedal to select CRAB Turn the
steering ring and check that all three wheels turn together and all point in the same direction.
Align a steering indicator (21) with the crab/steer pedal (15) and press the pedal to select STEER. Turn the
steering ring and check that two of the wheels lock in the straight-ahead position and that the third wheel
(below the brake pedal) can be turned by the steering ring.
WARNING! The Quattro SL pedestal has a mass of 150 kg (331 lb). Take care when
lifting the pedestal. Do not lift the pedestal by the steering ring - use the
lifting apertures (9). Do not release the safety catches (3) at this stage.
WARNING! A pressure retaining valve prevents pedestal pressure being reduced
below approximately 3.5 bar (50 psi), indicated by the yellow segment on
the pressure gauge (7).
In the event that pressure has fallen below this, pressurize the pedestal to
approximately 3.5 bar (50 psi) before attempting to extend the column.

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Fitting the load
The Quattro pedestal has the standard four-bolt mounting plate (20) which permits the use of various
Vinten camera mounts including pan and tilt heads, Quickfix and Mitchell adapters. To fit a pan and tilt head
or an adaptor it is necessary to extend the moving column.
Fit the pan and tilt head or adaptor as follows:
Ensure pedestal pressure does not exceed 3.5 bar (50 psi). Reduce as necessary, using the
Schrader valve cap (16).
Push down on the weight tray (1) against residual pressure. At the safety catches (3), push the
rocker switches to the unlocked position. Allow the column to extend under hand restraint.
Apply the on-shot clamp (6).
Fit the pan and tilt head or adaptor and secure with the appropriate bolts.
Release the on-shot clamp (6) and lower the moving column under hand restraint. Push down on
the weight tray (1) and push the safety catch rocker switches to the locked position.
With the pedestal locked in the fully depressed position, fit the camera and accessories to the pan
and tilt head, ensuring that all items such as pan bars, prompters, lenses etc, are fitted. Attaching
these items at a later stage may upset the pedestal balance.
Install one main (19) and two auxiliary trim weights (2) on the weight tray (1).
WARNING! A pressurized pedestal will rise rapidly when the safety catches are
released. Do not lean over the pedestal when releasing the safety catches.
Always restrain the column by hand pressure on the weight tray when the
safety catches are released.
WARNING! A pressure retaining valve prevents pedestal pressure being reduced
below approximately 3.5 bar (50 psi), indicated by the yellow segment on
the pressure gauge (7).
In the event that pressure has fallen below this, pressurize the pedestal to
approximately 3.5 bar (50 psi) before attempting to extend the column.
WARNING! Lock the pedestal in the fully depressed position before installing the
camera.

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Pressurizing the pedestal
The Quattro may be pressurized from an external pressure source or by using the Vinten portable pump
(Part No. 3357-3). Trim weights (2, 19) are provided for fine balance.
Ascertain the payload to be fitted to the pedestal (payload = pan and tilt head, camera, lens and all ancillary
equipment). Referring to the graph (Fig 2), mark the payload on the horizontal axis then strike a vertical
line from the load figure to the balance line. At the intersecting point strike a horizontal line to the vertical
axis and read off the required pressure.
The pedestal should be pressurized with the column unlocked and free to extend.
Pressurizing the pedestal from an external pressure source
To pressurize the pedestal from an external pressure source, proceed as follows:
Remove the Schrader valve cap (16) and connect the charging line from the pressure source.
Push down on the weight tray (1) against residual pressure. At the safety catches (3), push the
rocker switches to the unlocked position.
Turn on the pressure supply and slowly increase the pedestal pressure to the required pressure.
Do not exceed the maximum working pressure, indicated by the leading edge of the red sector on
the gauge (7).
Disconnect the charging line, but do not refit the Schrader valve cap at this stage.
Pressurizing the pedestal using the Vinten portable pump
To pressurize the pedestal using the Vinten portable pump, proceed as follows:
Remove the Schrader valve cap (16).
On the pump (Fig 3), fold down both the feet (P.3).
Push in the handle release button (P.5) and move the handle (P.1)to the horizontal position, where
it will lock.
WARNING! This pedestal must be pressurized only with clean, dry air or nitrogen. A
pressure reducing valve must be fitted to the pressure line between the
gas cylinder and the outlet connection of the hose. The reducing valve
must be screwed into the gas cylinder outlet. The maximum pressure on
the outlet side of the reducing valve must not exceed 13.1 bar (190 psi). Do
not pressurize the pedestal beyond the maximum safe working pressure
indicated by the leading edge of the red sector on the gauge. The pedestal
is fitted with a pressure relief valve as a safeguard against over-
pressurization. Do not attempt to adjust the pressure relief valve.
WARNING! Do not pressurize the pedestal beyond the maximum safe working
pressure indicated by the leading edge of the red sector on the gauge. The
pedestal is fitted with a pressure relief valve as a safeguard against over-
pressurization. Do not attempt to adjust the pressure relief valve.

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Pull the hose (P.4) out of its stowage (P.2). Connect the hose to the pedestal charging valve (16).
On the pedestal, push down on the weight tray (1) against residual pressure. At the safety catches
(3), push the rocker switches to the unlocked position.
Position the pump between the legs, standing with both feet on the fold-down feet (P.3).
Grip the handle (P.1) with both hands and, using full steady strokes, pressurize the pedestal to the
required pressure. Do not exceed the maximum working pressure, indicated by the leading edge
of the red sector on the gauge (7). Approximately 600 strokes will be required to fully charge the
pedestal.
Disconnect the hose (P.4) from the pedestal charging valve, but do not refit the Schrader valve cap
at this stage. Fit the hose in its stowage (P.2).
Push the pump plunger fully down, push in the handle release button (P.5) and move the handle
(P.1) to the vertical position, where it will lock the pump plunger in the closed position.
Fold up both the feet (P.3).
Balancing the load
After pressurization of the pedestal, the pan and tilt head and payload can be accurately balanced, as
follows:
Exercise the moving column (5) over its full travel at least twice, then position the column in the
mid-height position.
If the column tends to fall, remove a trim weight (2, 19) or increase pressure.
If the column tends to rise, reduce the pressure in steps of 0.15-0.20 bar (2-3 psi) using the
Schrader valve cap (16).
Refit the Schrader valve cap (16).
A correctly pressurized pedestal will balance its payload such that it can be moved to any position
over the full on-shot stroke of the moving column, with minimum effort, and it will maintain its
position when the steering ring is released.
Fine balance and temperature correction may be achieved by adding or removing trim weights.
WARNING! A pressure retaining valve prevents pedestal pressure being reduced
below approximately 3.5 bar (50 psi).
WARNING! The Schrader valve cap (16) forms a primary pressure seal. Always replace
the cap and screw it down finger- tight.

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Using the Quattro SL pedestal
Height adjustment
The column (5) has an on-shot stroke of 100 cm (39.4 in.) and the load can be moved over this distance,
in perfect balance, by raising and lowering the steering ring (4). The movement is adjustable for drag (17)
and an on-shot clamp (6) can be used to hold the moving column in position if fixed height operation is
required. A markable height indication scale is provided on the second stage of the column. Operators can
use this scale to record working heights to be returned to whilst shooting.
Drag control
Column movement is adjustable for drag and this is set according to operator preference by means of the
drag control (17) located at the base of the moving column. Turn the control clockwise to increase the drag
setting, and counter- clockwise to decease it.
On-shot clamp
An on-shot clamp (6), located at the base of the moving column, can be used to hold the column in position
if fixed height operation is required. Move the clamp lever fully to the left to apply the clamp. Move it fully
to the right to release the clamp.
Steering
Directional control of the pedestal is achieved by turning the steering ring (4) mounted at the top of the
column. The steering system is geared so that the wheels turn by the same amount as the steering ring.
This ensures, for example, that with the pedestal set to crab, turning the steering ring by 90° will also cause
the pedestal to change direction by 90°. The steering ring is fitted with indicators which, when aligned with
the crab/steer pedal (15), indicate the straight-ahead position and thus provide a reference point when
steering.
Position indicators (12) in the centre of each vertical face of the base allow the camera operator to
accurately position the pedestal.
The pedestal has a crab/steer arrangement with a foot-operated changeover mechanism, which provides
a steer setting - one wheel steering, two fixed; or a crab setting - all three wheels turning together. Pushing
the pedal (15) operates the changeover mechanism which toggles the pedestal between crab and steer.
Although the button can be pressed with the wheels in any position, the changeover will not occur until the
wheels are all facing forward, so the steering ring may have to be turned by up to 180° before the
changeover mechanism engages. This arrangement ensures that the fixed wheels will always lock in the
straight-ahead position when changing from crab to steer.
Steering rings of two diameters and with either type of steering indicator may be fitted (See Changing the
steering ring on page 19).
WARNING! To ensure maximum stability, particularly when moving over uneven
surfaces, reduce pedestal height to a minimum.
Take care not to trap fingers under the steering hub or between column
elements while pedestal height is being reduced.

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Parking brake
A parking brake is provided on one wheel, operated by a red, foot-operated button (14), adjacent to the
crab/steer button.
To apply the brake, press down on the button. Press the button again to release the brake.
Cable clamps
Two cable clamps (13) are provided, mounted on the vertical faces of the base.
Cable guard
An infinitely adjustable, continuous cable guard is provided in the skirt of the base, raised and lowered by
means of a single single knob (10). Height of the cable guard is displayed by a cable guard height indicator
(11) positioned below the adjustment knob.
Rotate the adjustment knob to set the cable guard to the required height.
The cable guard incorporates a spring-loaded mechanism to prevent damage if the pedestal is pulled over
an obstacle.
WARNING! This brake is intended for use only as a parking brake. Do not apply the
brake while the pedestal is in motion.

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Transportation and storage
To prepare the pedestal for transportation and storage, proceed as follows:
Fully depress the moving column (5). Push down on the weight tray (1) and push the safety catch
rocker switches (3) to the locked position.
Using the Schrader valve cap (16), reduce pedestal pressure to 3.5 bar (50 psi).
Push down on the weight tray (1). At the safety catches (3), push the rocker switches to the
unlocked position. Allow the column to extend under hand restraint.
Apply the on-shot clamp (6).
Undo the four mounting bolts and remove the pan and tilt head.
To avoid the possibility of dust or abrasive particles collecting on moving components, release the
on-shot clamp (6) and set the moving column (5) to minimum height. Push down on the weight tray
(1) and push the safety catch rocker switches (3) to the locked position.
Place any trim weights (2, 19) in the trim weight stowage (8).
WARNING! The Quattro SL pedestal has a mass of 150 kg (331 lb). Take care when
lifting the pedestal. Do not lift the pedestal by the steering ring - use the
lifting apertures (9).
WARNING! Local, national or international regulations may apply to the transport and
storage of pressurized pedestals, specifically, not to be classed as
dangerous goods under IATA regulation UN 1956 - Compressed Gas
Shipping. Pressure must be reduced to 2bar (28psi) or less. See Service
Bulletin V4002-4990 for further information and instruction.
WARNING! Ensure the pedestal pressure is increased to a minimum of 3.5 bar (50 psi)
before attempting to raise the column.
WARNING! A pressure retaining valve prevents pedestal pressure being reduced
below approximately 3.5 bar (50 psi).
WARNING! A pressurized pedestal will rise rapidly when the safety catches are
released. Do not lean over the pedestal when releasing the safety catches.
Always restrain the column by hand pressure on the weight tray when the
safety catches are released.
WARNING! This pedestal must be transported and stored in an upright position.

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Servicing
General
The Quattro SL pedestal is robustly made to high engineering standards and little attention is required to
maintain serviceability save regular cleaning. Attention to the following points will ensure a long and useful
service life with minimum need for repair.
Routine maintenance
The Quattro SL pedestal requires no routine maintenance other than regular cleaning.
During normal use, check the steering alignment, the effectiveness of the on-shot clamp and check for
radial or side play in the moving column.
If the steering is misaligned, re-align the wheels (See Steering alignment on page 17).
Refer to the appropriate section in the Maintenance Manual if the on-shot clamp is ineffective, excessive
radial or side play is apparent in the moving column, or any other defect is apparent.
Adjustments and repairs should be carried out only by a competent person.
Cleaning
During normal studio use, the only cleaning required should be a regular wipe over with a lint-free cloth.
Dirt accumulated during storage or periods of disuse may be removed with a semi-stiff brush. Particular
attention should be paid to the flats on the top stage of the column and to the wheels, which are accessible
for cleaning through the lifting apertures.
Use out-of-doors will require special attention, especially in adverse conditions. Salt spray must be washed
off with fresh water at the earliest opportunity. Do not allow water to enter the column. Sand and dirt acts
as an abrasive and should be removed with a semi-stiff brush or vacuum cleaner.
Steering alignment
(Fig 4)
Inaccuracies in the steering may be due to misalignment of the wheels, backlash in the steering ring, or
slackness in the steering belt or chains,
If misalignment of the wheels is suspected, carry out a tracking check, as follows:
Draw a straight line on the studio floor at least 4 m (13 feet) long.
Ensure that the pedestal is carrying a payload of approximately 80 kg (176 lb)
NOTE: Do NOT use oil or grease on any exposed part of the column. This is unnecessary and
traps dirt which acts as an abrasive.
NOTE: Use only detergent-based cleaners. Do NOT use solvent- or oil-based cleaners, abrasives
or wire brushes to remove accumulations of dirt, as these damage the protective surfaces.

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Set the pedestal to CRAB and carefully align the clutch wheels (under the crab/steer knob) and
one of the front wheels with the line on the studio floor.
Push the pedestal 3.6 m (12 feet) along the line. The pedestal should not deviate more than 50 mm
(2 in.) from the line.
Push the pedestal back to the starting point. The pedestal should not deviate more than 50 mm
(2 in.) from the line.
Reposition the pedestal to align the wheels under the crab knob and the other front wheels with
the line on the studio floor and repeat the above check.
If the deviation exceeds the above limits, re-align the wheels as follows:
Remove any payload from the pedestal. Remove all trim weights from the weight tray and
stowages.
Lower the column and lock in the fully depressed position.
With the aid of a second person, invert the pedestal and stand it on the weight tray. Use a suitable
material under the pedestal to prevent damage.
Turn the cable guard adjustment knob (10) so that the indicator (11) is at the top of its scale, to set
the cable guard to its highest position.
Select STEER and turn the wheels until the two wheels furthest from the clutch wheel lock in the
straight-ahead position.
Working through the lifting apertures (9), at each axle mounting, slacken the lock screws (9.1).
Push a substantial straight edge (at least 1 m (3 ft) long) against the tyres of the two pairs of wheels
until the wheels are aligned. Tighten the lock screws (9.1).
Select CRAB and turn the wheels until all wheels lock together.
Turn the wheels until the clutch wheel is approximately aligned with either of the other wheels.
Slacken the lock screw (9.1) on the clutch wheel.
Push the straight edge against the tyres of the clutch wheel and the other wheel until they are
aligned. Tighten the lock screw (9.1) on the clutch wheel.
Check the alignment of the clutch wheel against the second wheel, then recheck the alignment of
the two wheels furthest from the clutch wheel. Repeat the adjustment until alignment is
satisfactory.
Ensure all lock screws (9.1) are fully tightened.
With the aid of a second person, turn the pedestal upright.
Carry out a tracking check as detailed above.
If problems are still experienced with the steering, it is probably due to backlash in the steering ring, or
slackness in the steering belt or chains. Please refer to the appropriate section in the Maintenance Manual.

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19 19
Changing the steering ring
(Fig 5)
The Quattro SL may be supplied with a 58.9 cm (23 in.) or 74 cm (29 in.) diameter steering ring with either
rivets or moulded steering indicators.
To change the steering ring:
Fully extend the column and apply the on-shot clamp.
On the underside of the steering hub, remove four nyloc nuts (4.1) to release the steering ring (4).
Note the position of the steering indicators (21) and remove the steering ring.
Position the replacement steering ring on the steering hub with the steering indicator in the position
noted above.
Secure the steering ring with four nyloc nuts (4.1).
NOTE: If a steering ring with a moulded indicator is changed for one with rivets, or vice versa, it
will be necessary to realign the steering mechanism. This should be carried out by
competent personnel in accordance with the procedures laid down in the Maintenance
Manual.