Graco 3A0021C Bedienungsanleitung PDF herunterladen (Seite 4)

Repair

4 3A0021C

Repair

Required Tools

• Vise with soft jaws

• Set of adjustable wrenches

• O-ring pick

• 1/2 in. hex key

• Rubber mallet

• 18 in. pipe wrench

• Torque wrench

• Anti-seize lubricant

Disassembly

1. Relieve pressure. See system manual for pressure

relief instructions.

2. Remove vertical hydraulic driver from system. See

system manual for instructions.

3. Use two people to lift and clamp the cylinder (1) in a

vise.

4. Remove elbow fittings (4) and pipe plugs (5) from

seal housings (2).

5. Place a waste container below the seal housing (2)

to drain any residual hydraulic oil from inside the cyl-

inder (1). Use a 3 1/4 in. wrench to remove both seal

housings (2) from cylinder.

6. Remove o-rings (2a) from each seal housing (2).

NOTICE

Recommended Hydraulic Oil

Use Graco-approved Hydraulic Oil, Part No. 169236

(5 gal) or 207428 (1 gal)) or a premium, ISO grade

46 petroleum-based hydraulic oil containing rust and

oxidation inhibitors and anti-wear agents.

Before using any other type of oil in this motor, con-

tact your Graco distributor. Unauthorized use of

lesser grade oil or substitutes may void the warranty.

Hydraulic Oil Working Temperature

The maximum hydraulic oil operating temperature is

160 °F (71 °C). The motor seals will wear faster and

leakage may occur if the pump is operated at higher

oil temperatures.

If the hydraulic oil temperature approaches 160 °F

(71 °C), check the hydraulic fluid supply cooling sys-

tem, filters, etc. and clean or repair as needed.

Keep the hydraulic system clean

To reduce the risk of damaging the hydraulic driver,

verify that the hydraulic power supply fluid lines and

reservoir are clean and free from contaminants.

Carefully follow the manufacturer’s recommenda-

tions on reservoir and filter cleaning, flushing, and

periodic changes of hydraulic fluid.

Always plug the hydraulic inlets, outlets and lines

when disconnecting them to avoid introducing dirt

and other contaminants into the system.

NOTICE

To prevent damage to the driver, avoid getting dust

or dirt in the driver during service.

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