Maintenance; Troubleshooting - AC Hydraulic DK40Q User Manual

DK40Q, DK60Q, DK100Q,
GB
DK120Q, DK50HLQ
WARNINGS -
Safe usage instructions
1. Study, understand and follow all instructions before
operating this jack.
2. Do not exceed rated capacity.
3. Use only on hard level surface.
4. The vehicle must be allowed to run freely during
lifting and lowering (without brakes and in neutral).
5. Do not move or transport the vehicle while on the
jack.
6. Lifting device only. Immediately after lifting, support
the vehicle with support stands.
7. Lift only on areas of the vehicle as specified by
the vehicle manufacturer, and only centrally on the
lifting saddle.
8. No person shall remain in, on, or get bodily under a
load that is being jacked or is supported only by a
jack.
9. Only original accessories and spare parts shall be
used.
10. No alterations shall be made to this jack.
11. Failure to follow these warnings may result in perso-
nal injury and/or property damage.
Assembly
Mount plastic handle on tube lever with inner projection
to fit into slot. Push tube lever into handle until screw
and nut can be mounted (use a rubber hammer to ad-
just handle position) (Fig. 1-4).
Then place lever in tipping gear, and secure it with tip-
ping gear screw fitting into slot in tube lever.
Use
Lifting: Activate lever tube up and down using full
strokes.
Lowering: Pull lever tube up, then slowly turn counter
clockwise.

Maintenance

Maintenance and repair must always be carried out by
qualified personnel.
Daily: Inspect jack for damages.
Monthly: Lubricate all mechanical parts with a few
drops of oil.
Important: It is mandatory to lubricate axle (9103000)
for tipping mechanism every month! If not you risk "long"
holes in the pump, which is not cover under warranty!
4
Refilling of oil: Pump and cylinder form a closed sy-
stem and refilling of oil is only necessary in exceptional
cases. To check the oil level it is necessary to take out
the pump, complete:
1. pump the jack half-way up.
2. keep the handle horizontally and block the piston
rod (40) in the inmost position by a screw or the like
through the hole in the release bracket. (45). Mind
the inner spring.
3. Remove handle and tipping gear as well as two
screws (9) on the top of the lifting frame.
4. Unfasten screw (12) and disconnect the piston rod
and the base frame by lifting the lifting frame.
5. Lift the loose complete pump up and out of the
lifting frame.
Correct oil level is up to lower edge of filling hole (27)
keeping the complete pump vertically and the piston rod
pushed in. Too much oil might cause imperfect pump
function.
Oil quantity: DK40Q/DK60Q:
Oil quantity: DK50HLQ/DK100Q/DK120Q:
Any good hydraulic oil of viscosity of ISO VG15 can be
used.
NEVER USE BRAKE FLUID.
Safety Inspection
According to national legislation - minimum once a year
though - the jack must be inspected by a profes-sional:
damages, wear and tear, adjustment of the safety valve,
hydraulic unit for leakages. Furthermore that all safety
labels are legible.

Troubleshooting

1. The load is dropping occasionally: Verify the play
between release bracket (45) and lever tube. Adjust
the two nuts (11) until the play is 1-2 mm, irrespec-
tive of the lever tube position (vertical or horizontal).
2. The jack does not lift to maximum position: refill with
oil.
3. The load is dropping: leaking pump valves or worn
seals. Inspect the valve seats + balls under plug (30)
and change seals in lifting cylinder.
4. The hydraulic unit is leaking: exchange worn seals
with repair kit.
Spare parts
Replace worn or broken parts with genuine jack manu-
facturer supplied parts only. All major parts may not be
provided after discontinuation of a model.
Destruction
Oil must be drained off and legally disposed of.
(Translation of original text)
0,8 l.
1,3 l.