KROFtools 4905 User manual

OPERATOR’S MANUAL
3-1/2 TON GARAGE FLOOR JACK
REF 4905

Read this manual and follow all the safety rules and operating instructions before using this product
.
SPECIFICATIONS
WARNING!!
1. This is a lifting device ONLY. Do not move or dolly the vehicle while on the jack.
2. The load shall be supported immediately by jack stands, or other appropriate means.
3. Do not overload. Overloading can cause damage to or failure of the jack.
4. Lift only on areas of the vehicle specified by the vehicle manufacturer.
5. This jack is designed for use on hard, level surfaces capable of sustaining the load. Use
on other than hard, level surfaces can result in jack instability and possible loss of load.
6. Do not get under vehicle while jack is being used as the only support.
7. Use only genuinely factory replacement parts when replacement of parts is necessary.
8. Failure to comply with all of these warnings may result in loss of load, damage to jack,
and/or failure resulting in personal injury or property damage.
OPERATING INSTRUCTIONS
Important: Sometimes during shipment and handling, air gets into the hydraulic system,
causing poor lifting performance. Before initial operation, purge any air from the system by
fully opening pump release valve (turn handle counter-clockwise). Then, while holding the
saddle down, pump handle rapidly several times.
Raising the Jack
1. Turn handle clockwise until resistance is felt to close release valve. Do not over tighten.
2. Place jack directly under object to be lifted. Make sure saddle accepts weight firmly and
centrally. Check positioning under slight load to confirm jack or load will not slip, or move
suddenly.
3. Raise jack by pumping handle until desired height is reached. After lifting, secure and
transfer load to jack stands or other appropriate means. Do not use jack as the only
means of support.
Lowering the Jack
1. Slowly turn handle counter-clockwise. Speed of descent is controlled by amount release
valve is turned
Lifting Capacity
(Ton)
Max. Height
(mm)
Min. Height
(mm)
Gross
Weight (kg)
Net
Weight (kg)
Package Size
(mm)
3-1/2
540
95
45
44
835X415X230

NOTE: Always store jack in the fully lowered position, and the handle in the upright position.
POWER UNIT
ASSEMBLY
Item No.
Description
Q'TY
Item No.
Description
Q'TY
33-1
Snap Ring
1
33-25
O-Ring of Pump Core
2
33-2
O-Ring
1
33-26
Pump Body
1
33-3
Seal Ring
1
33-27
Copper Washer
1
33-4
O-Ring
1
33-28
Oil Drain Valve
1
33-5
Piston Rod
1
33-29
O-Ring
1
33-6
Retainer Ring
1
33-30
Steel Ball
1
33-7
Piston Head
1
33-31
Hexagonal Flat End Screw
2
33-8
Baffle Ring of Piston Head
1
33-32
Steel Ball
1
33-9
Washer
1
33-33
High Pressure Spring
2
33-10
O- Ring of Piston Head
1
33-34
Steel Ball
2
33-11
Cylinder
1
33-35
Low Pressure Spring
2
33-12
Block Shot
2
33-36
Steel Ball
3
33-13
Seal Screw
3
33-37
Steel Cable Baffle Ring
1
33-14
Safety Valve O-Ring
3
33-38
Pressure Spring Cover
1
33-15
Pressure Adjusting Screw
2
33-39
Dust Cover
1
33-16
Safety Valve Spring
1
33-40
Pressure Spring of Pump
Core
1

MAIN BODY
ASSEMBLY
33-17
Ball Valve Seat
2
33-41
Pump Core
1
33-18
Steel Ball
1
33-42
Retaining Ring of Pump
Core
2
33-19
Retaining Ring of Pump
Core
1
33-43
O-ring of Pump Core
2
33-20
Pressure Cover (small)
1
33-44
Pump Body
1
33-21
Dust Cover
1
33-45
Copper Washer
1
33-22
Pressure Spring of Pump
Core
1
33-46
Spring of Safety Valve
1
O-ring
2
33-23
Pump Core A
1
32-47
Steel Ball
1
33-24
Nylon Collar
2

PARTS LIST
Item No.
Description
Q'TY
Item No.
Description
Q'TY
1
Front Wheel
2
25
Handle Socket
1
2
Washer 20
2
26
Front Handle
1
3
Retainer Ring 20
2
27
Locating Screw
1
4
Washer 16
4
28
Press The Roller Shaft
1
5
Nut M16
38
29
Press The Handle Wheel
1
6
Real Wheel
2
30
Press the Hand
1
7
Lift Arm Shaft
1
31
Retainer Ring 12
1
8
Retainer Ring 30
2
32
Limit Stroke Rod Stroke
1
9
Washer 12
4
33
Pump
1
10
Bolt M12x25
4
34
Cover
1
11
Nut M16
2
35
Tension Spring
2
12
Washer 5
4
36
Retainer Ring 25
2
13
Washer 5
4
37
Pin 4x50
1
14
Screw M5x16
4
38
Link Member
1
15
Washer 6
2
39
Lifting Arm
1
16
Washer 6
2
40
Oil Cup M6
1
17
Screw M6x16
2
41
Bolt
2
18
Backshaft
1
42
Right Long Connecting
Rod
1
19
Washer 10
2
43
Wallboard
1
20
Nut 10
2
44
Retainer 16
2
21
Washer 18
2
45
Left Long Connecting Rod
1
22
Bolt
2
46
Saddle
2
23
Rear Handle
1
47
Screw of Saddle
1
24
Locating Pin
1
48
Tray Mat
1