Husqvarna WS 482 HF Instruction manual

HUSQVARNA CONSTRUCTION PRODUCTS
Workshop manual
WS 482 HF

1. LITERATURE 3
2. COMPONENTS – NAVIGATION 4
3. FUNCTION TEST 5
4. BLADE FLANGE HUB 7
5. ELECTRICAL COMPONENTS
– dismantling 9
– assembly 13
6. FEEDING MOTORS
– dismantling 15
– gear housing 17
– bottom bearing, adjustment 19
– assembly 21
– HALL-sensor 22
7. PIVOTING ARM
– dismantling 25
– blade shaft, saw hub 28
– transmission 30
– slip clutch 35
– assembly 37
8. SAW HEAD
– dismantling 40
– friction linings, bearing replacement 42
– carriage feed slip torque 43
– pivoting arm feed shaft 45
– assembly 46
9. SAW MOTOR 49
10. SAW CARRIAGE 52
11. SERVICE 56
12. SPECIAL TOOLS 60
CONTENTS Page
2
HUSQVARNA
WS 482 HF

3
LITERATURE 1
HUSQVARNA CONSTRUCTION PRODUCTS
Workshop manual
WS 482 HF
HUSQVARNA CONSTRUCTION PRODUCTS
GB ES DE FR
Operator’s manual
Please read the operator’s manual carefully and make sure
you understand the instructions before using the machine.
Manual de
FR
GB
ES
DE
instrucciones
Lea detenidamente el manual de instrucciones y asegúrese
de entender su contenido antes de utilizar la máquina.
Bedienungsanweisung
Lesen Sie die Bedienungsanweisung sorgfältig durch und
machen Sie sich mit dem Inhalt vertraut, bevor Sie das
Gerät benutzen.
Manuel d’utilisation
Lire attentivement et bien assimiler le manuel d’utilisation
avant d’utiliser la machine.
WS 440 HF
WS 482 HF
Workshop manual
The workshop manual covers virtually all work in the
workshop that involves the WS 482 HF. Some very
simple and rather obvious repair work has been
omitted.
PP 480 HF
Driving the wall saw requires a high frequency unit,
PP 480 HF. A separate workshop manual is available
for this unit.
Arrangement – illustrations and text
The manual is divided into numbered chapters as well
as chapter headings that are specified in bold at the
top of each page.
The list of contents at the beginning of the manual
also has a page reference to the beginning of each
chapter.
Spares
Spares WS 482 HF
The folder includes all spares for Husqvarna
WS 482 HF.
The folder contains complete exploded drawings
for the whole machine where the location, spares
number and appearance of each component is easy to
identify.
Operators manual
The operators manual describes how the machine is
to be used, the functions of the machine, and the
maintenance the operator normally carries out.
This manual also contains important instructions
for the safe handling of the machine.
It is extremely important that service personnel are
well acquainted with how the machine is used and
follow the instructions given in the manual.

COMPONENTS – NAVIGATION
4
2
HUSQVARNA CONSTRUCTION PRODUCTS
GB ES DE FR
Operator’s manual
Please read the operator’smanual carefully and make sure
you understand the instructions beforeusing the machine .
Manual de
FR
GB
ES
DE
instrucciones
Lea detenidamente el manual de instrucciones y asegúrese
de entender su contenido antes de utilizar la máquina.
Bedienungsanweisung
Lesen Sie die Bedienungsanweisung sorgfältig durchund
machen Sie sich mit dem Inhalt vertraut,bevor Sie das
Gerät benutzen.
Manuel d’utilisation
Lire attentivement et bien assimiler le manueld’utilisation
avant d’utiliser la machine.
WS 440 HF
WS 482 HF
1. Saw head
2. Pivoting arm
3. Saw motor
4. Electric socket
5. Socket cover
6. Saw frame
7. Water connection
8. Water hose
9. Blade flange hub
10. Outer flange
11. Blade guard guide
12. Blade guard
13. Track
14. Saw carriage
15. Locking handle
16. Mounting bracket
17. Track holder
18. Coupling link
19. Cleaning brush
20. Tool kit
21. Operators manual

123
FUNCTION TEST
5
Function test
In order to determine the status of the current item, it is
appropriate to begin by measuring the traction and tooth
flank play in the arm feed's worm gear.
The tests reveal the condition of the feeding motors, slip
clutches and gears, and from this you can determine what
action to take.
Preparations
The blade flange hub must be removed for the test.
1. Starting position (blade side).
2. Loosen the screw (motor side).
3. Pull out the stud.
4. Turn the water connection horizontally to the right
(blade side).
5. Lift off the blade flange hub.
Arm feed
Arrange the scales as shown in the illustration using an
appropriate load belt and a steel shaft that fits through the
arm hole. In order to get the right value for the force of the
pivoting arm, the angle between the pivoting arm and load
belt must be as close to 90° as possible.
The arm must be able to pull at least 290 kg (640 lb) in both
directions. The following cases may occur:
The force is different depending on which way the arm pulls.
– Adjust the position of the HALL sensor card, see Page 23.
It does not achieve 290 kg (640 lb).
– Adjust the position of the HALL sensor card, see Page 23.
– If the motor is working but the arm has stopped, adjust the
slip clutch arm, see Page 39, Paragraph 8.
The saw carriage moves when the force to the arm increases.
– The carriage's slip clutch must be adjusted, see Page 43.
Carriage feed
Arrange the scales as shown in the figure using appropriate
load belts.
The carriage must be able to pull at least 290 kg (640 lb) in
both directions. The following cases may occur:
The force is different depending on which way the carriage
pulls.
– Adjust the position of the HALL sensor card, see Page 23.
It does not achieve 290 kg (640 lb).
– Adjust the position of the HALL sensor card, see Page 23.
– If the feeding motor is running but the carriage is not
moving, adjust the carriage slip clutch, see Page 43.
4 5
3

FUNCTION TEST
6
3
Max 1,5 mm
.06 in.
Wear control
Check the worm gear play using a dial gauge
arranged as shown in the figure. Control
measurement should be made level with the
centre of the blade flange hub.
If the play exceeds 1.5 mm (.06 in.) when the
arm is pushed with a light press, the worm
wheel needs replacing.
Also check to see if the worm wheel's
wedging has too much play by pushing the
arm with greater force. If a play of 4–6 mm
(.15–.25 in.) can be measured, the keyway in
the worm wheel is deformed and the worm
wheel may need replacing.
These plays do not significantly affect the
sawing process, but could lead to a total
failure if the wear continues which is why it
is prudent to address these issues at a
scheduled service.

BLADE FLANGE HUB
7
Function
The obvious task of the blade flange nub is to
lock the blade between the flange washers with
the centre screw on the outer flange washer.
The blade flange hub also has a channel
system that supplies the blade with water on
both sides.
The inner flange washer is journalled to
the bracket and surrounded by sealing rings
to prevent water reaching the bearing. Make
sure the bearing is intact by turning the
inner flange washer.
Bearing replacement
Dismantling
1. Remove the two screws on the centre
bushing and lift this off.
2. Note the channels under the bushing that
direct the water to the upper flange washer.
Clean if necessary.
3. Turn the blade flange hub and remove the
six hexagonal screws.
4. Lift off the washer.
5. Press out the inner flange washer using a
standard puller as shown in the illustration.
6. Turn the blade flange hub.
Note that there are two radial seals above
the bearing. These must always be replaced
when changing the bearing.
7. Remove the two radial seals.
Pay attention to how these are to be turned
when reassembling.
It is particularly important that these are
thoroughly greased. Water flows between the
sealing rings that is transported to the inner
blade flange hub and on to the blade.
1
3
5
6
7
2
4
4

BLADE FLANGE HUB
8
Bearing – dismantling
The easiest way of removing the bearing is by
using a hydraulic press.
Bearing – assembly
When fitting, it is important that a press
force is applied to the outer bearing ring to
prevent damage to the bearing.
Note that the bearing must be pressed
slightly below the flat surface to reach the
stop under the bearing. Hint: use the old
bearing as a pressing device.
Lubricate and fit the seals
Lubricate the sealing rings carefully with
OG2. Also apply a little grease between the
ball bearing and the lower seal ring. Poorly
applied lubrication may cause water leaks on
the ball bearing!
1. Fit the inner flange washer
Fit the inner flange by pressing.
Hint: Use the replaced the ball bearing as a
support for the newly fitted bearing when
pressing the flange washer. In this way both
the bearing rings are supported and the
bearing load is not uneven.
2. Fit other components
Apply grease above the bearing and fit the
washer. Lubricate and fit the O-ring on the
shaft.
3. Fit the blade bushing
Blade guard bracket
To change the blade guard bracket, you must
first remove the flange washers.
1. Remove the two screws.
2. Divide the unit.
3. Remove the washer by simultaneously
turning and pulling it out.
4. Note the "water chute" and the channels
that direct the water towards the inner flange
washer and on towards the blade.
Clean and check that the water channels
are open.
1
3
2
1
3
2
4
4

ELECTRICAL COMPONENTS
9
1
3
5
2
4
6
5
Dismantling
1. Remove the four screws to the electric
socket.
2. Remove the four inner screws in the
electric socket.
3. Lift up the socket piece by the rear edge.
4. Pass the socket piece through the electric
socket and remove it.
5. Lift off the cover.
6. Socket piece after removed cover.
Dismantling the socket unit
To access more of the saw components the cover must be removed. To
remove this, first remove the socket piece on the top of the cover.
For work that does not directly affect the socket units, the most appro-
priate method is to remove the complete socket unit, as described on this
page.
In other cases, dismantle as described on the next and following pages,
when work mainly involves sockets and electronics, and where components
are dismantled piece by piece.

34
56
78
ELECTRICAL COMPONENTS
10
12
5
Dismantling of the socket components
This chapter deals with the removal of electrical components from
the machine, which are grouped around the electric socket on the saw
head. Releasing the power cables from the enclosure where all the electrical
connections converge is necessary for virtually all work on the saw head
and saw motor.
For jobs that include the pivoting arm, work on the electrical
components or cable system is unnecessary.
Preparations
To access the electronic devices it is advisable
to begin by doing as follows:
1. Set the arm horizontally using the feeding
motor.
Alternatively: Loosen the six screws that
hold the pivoting arm by one turn. The
pivoting arm can now be folded down to a
horizontal position to enable the removal of
the saw frame.
2. Remove the four screws to the saw frame.
Remove the electric socket
3. Remove the four screws to the electric
socket.
4. Remove the four inner screws in the
electric socket.
Mark the sockets
5. Lift up the socket unit. Note that the
right-hand socket module has thick cables
and supplies the saw motor. The other two
are for the feeding motors. The left, closest
to the pivoting arm, is for the arm motor.
The middle modules are for the carriage
motor.
6. Lift up the socket unit. and mark the
modules.
Release the sockets
7. The sockets are attached to a frame where
the side panels can be folded to free the
sockets.
8. Make sure that the rectangular studs for
the sockets release from the side panels.