JH 5 G plus User manual

Toolwell
N. American Manufacturer’s Rep for JUNG Dollies & Jacks
Tel: [phone] Tel: [phone] Fax: [phone] Spare Parts for JUNG Hydraulic Jacks
Model: JH 5-10-15-20 G-plus
Models
JH 5 G plus JH 10 G plus JH 15 G plus JH 20 G plus
Item-No. Designation Part-Numbers
1 Housing On request 91 156 002-B 91 206 002-B
2 Pump unit / Tank On request On request
3 Slide assy. 91 056 003-B 91 106 003-B 91 156 003-B 91 206 003-B
4 Toe 91 056 520-B 91 106 520-B 91 156 520-B 91 206 520-B
5 Bracket 91 056 510-B 91 106 510-B 91 156 510-B 91 206 510-B
6 Slide Shoe, 1 piece 91 103 420-E 91 153 020-E
7 8 9 Lifting Piston assy. 91 056 235-B 91 106 235-B 91 156 235-B 91 206 235-B
10 Guide nut 91 056 243-E 91 114 043-E 91 154 043-E 91 254 043-E
11 Lowering Screw 91 106 446-B
12 Swiveling Foot 91 102 411-B 91 156 210-B 91 206 210-B
13 Pump Rod assy. 91 010 004-B
14 Oil reservoir breather valve 94 040 027-B
15 Wheel with circlip lock ring 95 050 084-E 95 050 085-E
16 17 Handle bar assembly On request
23 Valve complete 91 010 076-B
24 Pressure Cylinde
r
91 010 012-B
25 26 Pressure Screw assy. 91 010 110-B
27 28 Pressure Piston 91 106 463-B
29 Pump Leve
r
91 106 480-B
8 9 25 27 33 34 Seal kit 99 066 005-L 99 066 010-L 99 066 015-L 99 066 020-L
35 Hydraulic Nipple 94 040 002-E
JUNG hydr. Oil 1 litre 94 040 028-E
JH 5 G plus/ JH 10 G plus new version 04/2005
JH 50 G-EX: Parts on request

Maintenance, Assembly, Repair
Youhavepurchasedaverysafeand reliableunit.Observing thefollowing
maintenanceinstructionwillensurethat thejack willprovidelongserviceto
yourentiresatisfaction.
Grease guides regularly as they are exposed to high friction forces!
1, 2 Pull off bracket and remove lifting toe.
3 Lift slide lightly.
,
Not JH 50 G-EX with external pump:
4 Loosen screw.
5 Pull out slide.
6 Oilbolt
Æ
Clean guidanceand slideshoes
Oilbolt regularly
Assembling: return steps
,
Not on JH 50 G-EX
FAULT CAUSE REMEDY
Load is not fully
lifted 1 Lack of oil Firstlower liftingpiston fully
Lifting piston
not completely
extended
Add oil, for JH 50 G-EX refill
external pump
Oil level – see picture
Change hydraulic oil yearly. We recommend JUNG-
hydraulic oil for reliable function.
(Part-No. 94 040 028-E including oil change instruction)
Dispose the waste hydraulic oil in accordance with environmental
regulations.
Load is not lifted
at all 2
A
dmissible
Capacity
exceeded
Use additional or larger jack
3
Lowering screw
open Tighten it
For JH 50 G- plus tighten it at
external pump
4 Pressure screw
loose Tighten it
For JH 50 G- plus tighten it at
external pump
5 Ball seat of
lowering screw
not seating
Press ball in seat
-Caused by
foreign body Tighten lowering screw cautiously several times
(with pliers)
6 Valve dirty
Remove it, clean it
7 Valve defective Remove it, displace it
8 Breather
valve
defective Displace it
What to do if?
We recommend a yearly maintenance of your
jack (see annexed sheet).
Control and renew slide shoes regularly if
wear out
Jacks never use:
- without slide shoes
- with less than 4 slide shoes
- when slide shoes are worn out
If a pump repair has to be carried out please return
on consultion with us:
Only the pump unit of JH 5, 10, 15, 20 G-plus
The complete jack of JH 5, 10, 15, 20 G plus.
We recommend a yearly maintenance of your jack by our
quick service (see annexed sheet)
If you carry out the maintenance by yourself, please dispose of
your waste oil in accordance with environmental regulations.

Maintenance, Assembly, Repair
Valve Assembly remove and install Not valid for JH 50 G-EX
1
2
3
4
5
6
1. Pull off bracket
2. Remove lifting toe
3. Loosen screw
4. Pull out slide
5. Loosen screws on bottom plate
6. Pull out pump unit
7 8
11
12
13
14
10
Then remove valve assembly
7. Lower lifting piston and loosen lowering screw
8. Loosen oil reservoir valve
9. Drain oil
=> Tilt unit and let oil drain in suitable container
10. Drive out transverse dowel pin
11. Unscrew hexagon nut
12. Remove pump rods
13. Loosen hexagon nut and pull out pressure piston with
pressure cylinder
14. Turn unit upside down, shaking out the valve assembly
9
INSTALL VALVE ASSEMBLY Not valid for JH 50 G-EX
1. Blow out valve seat with compressed air!
6 9 2. Insert valve assembly with sealing ring and ball
11 3. Remove copper sealing
4. Insert pressure piston from the bottom into the pressure
8cylinder
5. Reinsert copper sealing
6. Insert pressure piston and pressure cylinder into the
guiding pipe
7. Screw on intermediate ring and pressure screw
8. Insert pump rod, securing it by means of the nut
9. Drive in transverse dowel pin
10. Fill with oil
11. Screw in oil reservoir valve
12. Reinstall the pump unit (not pictured)
1 7
2
3 5 4
12