ADE M40010 Manuel de service télécharger pdf (Page 6)

Page 6 — PRESTO OWNER’S MANUAL: P18, P12, BP18, BP12 SERIES

S E C T I O N 4

OPERATION

A. METHOD OF OPERATION:

??To raise, press on foot pedal to raise

??To lower slowly turn release knob counter clock-

wise till the desired rate of decent is achieved.

??Too lock lift in position, press down on the wheel

breaks located on the swivel caster.

S E C T I O N 5

MAINTENANCE

Generally, the P or BP Series require little mainte-

nance. However, routine inspection and maintenance

will minimize costly repairs of hazardous conditions.

WARNING!

Never go under or service with a load

on the table. If possible, service the lift in a

down position.

A. ROUTINE INSPECTION

AND MAINTENANCE

All routine maintenance should be performed on a

monthly basis.

??Lubricate wheels and all pivot points of the unit

with a medium weight oil or light grease.

??Check wheels for wear and replace if necessary.

??Check for leaks by looking for telltale oil spots on

the floor under the lift.

??Check oil level and fill if needed.

Recommended hydraulic oil: Citgo AW32

B. TROUBLESHOOTING MAINTENANCE

If lift does not rise to full height:

It probably requires oil. (Check with lift in down

position.) To fill cylinder with oil, follow these

instructions.

There are two pipe plugs in the cylinder. Part No.

M427 (Vent Plug) and Part No. M428 (Oil Level

Plug). Remove both plugs. Put a good grade of

hydraulic jack oil in the cylinder through the top hole.

When the oil reaches the level of the bottom hole,

replace both plugs. TOP PLUG IS A BREATHER

PLUG. BE SURE TO REPLACE PLUGS IN

THEIR PROPER PLACES.

If Lift does not hold load, or tends to creep down-

ward under a load:

1. Ram chevron set may be worn.

2. Dirt particle may be obstructing seating of the

valve, allowing leakage.

To replace ram chevron set in hydraulic cylinder

assembly:

1. Remove hydraulic cylinder from lift and remove

Vent Plug (Part No. M427) and Oil Level Plug

(Part No. M428) and drain oil from cylinder.

2. Clamp pump body in vise, unscrew top hex nut

and remove outer cylinder.

3. Remove inner cylinder from pump making sure

not to distort or mar cylinder. Note: DO NOT use

pipe wrench.

4. Remove ram and replace chevron set. (see seal

kits, pg 13)

5. Push ram into cylinder – chevron end last!

6. Reassemble and fill with clean hydraulic jack oil.

If dirt particle is obstructing seating of the valve:

Open release valve by pressing down on release

pedal. At the same time, pump foot lever three or four

strokes. Do this three or four times. Then place some

weight on the platform or forks and pump foot lever

until platform reaches its full height. Now, lower lift

six inches to a foot at a time. This will dislodge dirt

and lift will work properly.

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ADE M40010 Manuel de service Page 6

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