Sealey YAJ20-40, YAJ20-40LR, YAJ15-30, YAJ15-30DC, YAJ20-40DC Instructions Manual

INSTRUCTIONS FOR :

AIR OPERATED JACKS
TELESCOPIC

MODEL No's YAJ15-30 YAJ15-30DC YAJ20-40 YAJ20-40DC YAJ20-40LR

Thank you for purchasing a Sealey jack. Manufactured to a high standard this product will, if used according to these instructions and properly
maintained, give you years of trouble free performance.

IMPORTANT: READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS AND CAUTIONS.
USE THIS JACK CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE
DAMAGE AND/OR PERSONAL INJURY, AND WILL INVALIDATE THE WARRANTY. RETAIN THESE INSTRUCTIONS FOR FUTURE USE.

1. SAFETY INSTRUCTIONS

 Disconnect jack from air supply before changing parts, servicing
or performing any maintenance.
 WARNING! Ensure correct air pressure is maintained and not
exceeded. Recommended pressure 116-145psi or 174psi for
YAJ20-40LR. Required air flow 10.5cfm or 11.5cfm for
YAJ20-40LR.
 Keep air hose away from heat, oil and sharp edges. Check air
hose for wear before each use, and ensure that all connections
are secure.
 Ensure Jack is kept clean and in good working order. Immediately
repair or replace damaged parts.
 Use recommended parts only. Incorrect parts may be dangerous
and will invalidate the warranty.
 Use a qualified person to lubricate and maintain the jack.
DO NOT use brake fluid to top up system. Use Sealey hydraulic
oil only.
 Locate jack in a suitable, well lit work area. Keep area clean and
tidy and free from unrelated materials.

 Use jack on level & solid ground, preferably concrete. Avoid
tarmacadam since jack may sink in.
 Place wedges under wheels of vehicle (but ensure wheels of jack
can freely move).

 Ensure the vehicle handbrake is engaged (or in “PARKED”
mode), and switch the engine off.
 Ensure minimum distance of 0.5m between vehicle tilt & static
objects such as doors, walls, etc.
 Ensure all non essential persons keep a safe distance and that
there are no passengers in the vehicle to be jacked up.
 Place jack under vehicle manufacturer’s recommended jacking
points (see vehicle handbook).
 Check that the jacking point is stable and centred on the jack
saddle and is free from grease or oil.
 Ensure jack wheels are free to move and that there are no
obstructions.

 DANGER: Use jack for lifting only, NOT for supporting the raised
load. Use correctly rated axle stands under vehicle before
proceeding with task.

 DO NOT apply your body weight to the handle during jacking.
The handle is only for moving the jack to and from the lifting
location.

 DO NOT operate the jack if parts are missing or damaged.
 DO NOT exceed the rated capacity of the jack.
 DO NOT allow the vehicle to move during lifting and do not use

the jack to move the vehicle.
 DO NOT jack a vehicle which may result in the spillage of fuel,
battery acid, or dangerous substances.
 DO NOT work under the vehicle until Axle Stands have been
correctly positioned.
 DO NOT use the jack for purposes other that than which it is
designed for.

 DO NOT adjust the safety overload valve.
 DO NOT yank the hose from the air supply, and DO NOT direct

air from the air hose at yourself or others.
 Ensure there are no persons or obstructions beneath the vehicle
before lowering.
 When not in use disconnect jack from the air supply, and store in
the lowered position in a safe, dry, childproof area.

 WARNING! Turn off air supply and de-pressurise the control
nozzle before removing the pump unit from any installation or
mobile system.
Failure to comply with this instruction may damage the unit and
will invalidate your warranty.

Original Language Version

2. SPECIFICATIONS

Note: The maximum heights shown may be extended by use of the
extension pins

Model No YAJ15-30 YAJ15-30DC YAJ20-40 YAJ20-40DC YAJ20-40LR

Maximum
Capacity

Minimum
Height

Maximum Height/Capacity (mm/Tonne)

Stage 1 472/15 409/15 472/20 409/20 504/20

Stage 2 393/30 343/30 393/40 343/40 416/40

Extension 45/75mm 45/75mm 45/75mm 45/75mm 45/75mm

Chassis
Length

Length inc. Handle

Position 1 460mm 1280mm 460mm 1280mm 820mm

Position 2 1380mm 1600mm 1380mm 1600mm 1770mm

Position 3 1700mm - 1700mm - 2100mm

Width 290mm 290mm 290mm 290mm 282mm

Working
Pressure

Air Flow 10.5cfm 10.5cfm 10.5cfm 10.5cfm 11.5cfm

Weight 39kg 31kg 41kg 33kg 62kg

30Tonne 30Tonne 40Tonne 40Tonne 40Tonne

175mm 150mm 175mm 150mm 190mm

480mm 430mm 480mm 430mm 770mm

116-

145psi

116-

145psi

116-

145psi

116-

145psi

116-

174psi

3. INTRODUCTION

3.1. Ideal for workshop or roadside use, these jacks take the effort

out of lifting heavy plant, tractors and commercial vehicles.
Models feature dead man's control for extra safety
(detachable on Model No's YAJ15-30DC and YAJ20-40DC
making these models extremely portable) and multi-position
locking handles. Each jack is supplied with a 45mm and
75mm extension to help close the gap between the saddle of
the jack and the jacking point. Model No. YAJ20-40LR also
offers a long reach chassis, ideal for accessing deep set
jacking points.

4. ASSEMBLY

4.1. Attaching the Handle - YAJ15-30, YAJ20-40, YAJ20-40LR

4.1.1. Remove a circlip from either side of the large pin (fig.1A).

4.1.2. Slide out the pin and place the handle into the opening. Slide
the pin back through the jack, lining up the handle and
through the other side. Secure with circlips.

4.2. Air Hoses - YAJ15-30, YAJ20-40, YAJ20-40LR

4.2.1. Screw in the two air hoses from the handle into the jack.

4.2.2. The hose marked orange must be screwed into the left-hand
side. The hose marked black or clear into the right-hand side.
(fig.1).

4.2.3. Ensure the hoses are tight and do not obstruct the movement
of the handle.

YAJ15-30, YAJ15-30DC, YAJ20-40,
YAJ20-40DC, YAJ20-40LR

Issue 2 - 13/03/12

fig.1

5. AIR SUPPLY

5.1. Ensure that the jack pneumatic switch is in the "off" position

before connecting to the air supply.

5.2. You will require an air pressure of at least 116psi (max 145psi
or 174psi for YAJ20-40LR) and an air flow of 10.5cfm or

11.5cfm for YAJ20-40LR to get the best performance from this
jack.

5.3.  WARNING! Ensure the air supply does not exceed 145psi
or 174psi for YAJ20-40LR while operating the jack.
Too high an air pressure and unclean air will shorten the
products life due to excessive wear, and may be dangerous
causing possible damage and personal injury.

5.4. Drain the air tank daily. Water in the air line will damage the
jack.

5.5. Clean the air inlet filter screen weekly.

5.6. Keep the air hose between the compressor and the air jack as

short as possible, and install an air filter and oiler (fig.2).

5.7. Line pressure should be increased to compensate for
unusually long air hoses (over 8 metres). The minimum hose
diameter should be 3/8" I.D. and fittings must have the same
inside dimensions.

5.8. Keep hose away from heat, oil and sharp edges. Check hoses
for wear, and make certain that all connections are secure.

6.3. Purge the System - YAJ15-30, YAJ20-40, YAJ20-40LR

Before using the jack, purge the hydraulic circuit in order to
eliminate any possible air that may have entered the system
during transit.

6.3.1. Push the control lever (fig.5A) to the ‘down’ position and hold
it there for several seconds. Release the lever to the centre
‘hold’ position.

6.3.2. Now push the lever to the ‘up’ position and hold it there until
the jack is fully extended. Push the lever to the ‘down’
position and watch the jack as it retracts. The lowering
movement should be smooth and without irregular stops.

6.3.3. Repeat the raising and lowering cycle until the movement is
smooth. Once this has been achieved this indicates that all
air has been expelled.

6.4. Purge the System - YAJ15-30DC, YAJ20-40DC

Before using the jack, purge the hydraulic circuit in order to
eliminate any possible air that may have entered the system
during transit.

6.4.1. Push the down button (fig.6B) and hold it there for several

seconds. Release the button.

6.4.2. Now push the 'up' button and hold it there until the jack is

fully extended. Push the 'down' button and watch the jack as
it retracts. The lowering movement should be smooth and
without irregular stops.

6.4.3. Repeat the raising and lowering cycle until the movement is
smooth. Once this has been achieved this indicates that all
air has been expelled.

6.5. Using the Jack - YAJ15-30, YAJ20-40, YAJ20-40LR

 WARNING! ensure you have read and understood the
safety instructions in chapter 1 before commencing work.

6.5.1. Position the Jack under the vehicle manufacturer’s

recommended jacking point (see vehicle hand book).

Note: Use the extension pins (fig.3D) to get the jack closer
to the jacking point before engaging the jack. See
specification for capacity when using the extension pins.

6.5.2. Whilst holding the main jack handle lifting is achieved by

pushing the control lever to the 'up' position (fig.5B).

6.5.3. When the vehicle has reached the desired height release the

control lever which will automatically return to the middle
hold position stopping any further air flow holding the jack at
the height to which it has been raised.

6.5.4. Place axle stands correctly in position and ensure chapter 1

safety instructions are strictly applied before performing any
task.

fig.3

fig.4

fig.2

6. OPERATION

6.1. Preparation - YAJ15-30, YAJ20-40, YAJ20-40LR

6.1.1. You will require an air pressure of at least 116psi (max
145psi or 174psi for YAJ20-40LR) and an air flow of 10.5cfm
or 11.5cfm for YAJ20-40LR to get the best performance from
the jack.

6.1.2. Connect the air supply to the connector (fig.3B).

6.1.3. Set the handle to the required angle using the handle release
lever shown in fig.3A. Pull the lever upwards towards the
main handle. Move the handle to the required position and
release the lever to lock it into position.

6.2. Preparation - YAJ15-30DC, YAJ20-40DC

6.2.1. Connect the air supply to the connector (fig.4A).

6.2.2 To change the handle position on the "DC" models turn the
handle (fig.4D) anti-clockwise then pull out of socket, insert
into the other handle socket and turn clockwise to secure.

6.2.3 On the "DC" models the controls (fig.4B) are detachable, lift
and slide off the handle before putting the jack under the
vehicle.

Original Language Version

YAJ15-30, YAJ15-30DC, YAJ20-40,
YAJ20-40DC, YAJ20-40LR

Issue 2 - 13/03/12