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Troubleshooting - KNOVA KN 7400-03TP Manual

Heavy duty trolley jack 3t

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ENGLISH
OPERATING LIFT WITH FOOT PEDAL
1. Assure that vehicle is properly balanced on lift saddle platform.
2. While watching to make sure it is safe to do so, push Pump Pedal
downward repeatedly to lift the vehicle to the desired height.
3. IMMEDIATELY AFTER LIFTING, SUPPORT THE VEHICLE
WITH APPROPRIATE MEANS.
LOWERING THE VEHICLE
1. Turn handle clockwise to closed position.
2. Pump handle to lift vehicle off of jack stands.
3. Remove jack stands. Do not get under or let anyone else under
the vehicle.
4. Turn handle SLOWLY counterclockwise to lower the vehicle onto
the ground.
NOTE: When the jack not in use, ALWAYS leave the saddle and
ram fully retracted.
CAUTION: Keep hands and feet away from the hinge mechanism
of the jack .
IMPORTANT: Only fully qualified personnel should attempt
maintenance or repair.
6 Trouble Shooting
PROBLEM
POSSIBLE CAUSE
Jack will not lift
Low oil level
to full height
Release valve not
closing
Jack will not
Release valve not
hold load:
closing
Hydraulic oil is
contaminated
Pump leaking
Lift arm will
Pump cylinder binding
not lower
Parts worn
Internal component
damage
Return spring broken
or unhooked
Lift arm linkage either
bent or binding
Still have air in the
hydraulic system
Poor lift
Fluid level low
performance
Hydraulic unit
malfunction
7 Parts list and exploded view
ACTION
Check oil level
Closing the release
valve
Closing the release
valve
Contact authorized
service agent
Contact
authorized
service agent
Ensure proper
fluid level
Contact authorized
service agent
Part no.
Name of part
01
UPPER HANDLE
02
BOLT
03
LOWER HANDLE
04
HANDLE COVER
05
SCREW
06
RETAINER RING
07
HANDLE SOCKET
08
ROLLER
09
PIN
10
LOCK WASHER
11
LOCK WASHER
12
BOLT
13
BOLT
14
NUT
15
LOCK WASHER
16
WASHER
17
CASTOR
18
BOLT
19
LOCK WASHER
20
NUT
21
LIMITED ROD
22
FRAME
23
RIGHT ADJUSTED PLATE
24
RETAINER RING
25
WASHER
26
FRONT WHEEL
27
PUMP
28
SPRING
29
COTTER PIN
30
PUSH ROD
31
RETAINER RING
32
LEFT ADJUSTED PLATE
33
LIFTING ARM
34
RETAINER RING
35
SADDLE
36
SCREW
37
RETAINER RING
38
CUP
39
LIFTING ROD
40
BOLT
41
LOCK WASHER
42
TOOLS TRAY
43
SCREW
44
RUBBER PAD
Quantity
1
1
1
1
1
1
1
1
1
4
1
1
4
2
4
2
2
4
4
2
2
1
1
2
2
2
1
2
1
1
2
1
1
2
1
1
2
1
1
1
1
1
4
1

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