Pressure Washer Parts List

ManualsBrandsGraco Inc ManualsPressure WasherHydra Clean 2245

18 308-489

PUMP

SER

VICE

WARNING

To reduce the risk of serious bodily injury ,

including

fluid injection, splashing in the eyes or

the skin, or injury from moving parts,

always

follow the Pressure Relief Procedure

Warning

before proceeding.

NOTE: The following metric wrenches are needed:

M10, M13 and M30. Repair kits are available.

Refer to the individual repair sections and the

pump

parts page for more details. For the best

results,

use all parts in the kits.

NOTE: There are two dif ferent tool kits to aid in

servicing the pump. P/N 800–298 is used to

ease installation of packings. P/N 800–271

includes

the items in 800–298

and tools to aid in

the

removal of packing retainers.

Valves

NOTE:

For a set of six valves, order P/N 801–472.

1. Remove

the hex plug from

the manifold using an M30

wrench.

2. Examine

the o–ring under the hex plug and replace it

it is cut or distorted.

3. Remove the valve assembly from the cavity; the

assembly

may come apart.

4. Install

the new valve. Install

the o–ring and hex plug;

torque

to 75 ft–lb (103 Nm).

NOTE:

Retorque the plug after 5 hours of operation.

Pumping Section

1. Remove

the eight capscrews and lockwashers

from

the

manifold using an M13 wrench.

2. Carefully

separate the manifold from the crankcase.

NOTE: It

may be necessary to tap the manifold lightly

with a soft mallet to loosen.

CAUTION

Keep the manifold properly aligned with the

ceramic plungers when removing to avoid

damage

to the plunger or seals.

3. Carefully examine each plunger for any scoring or

cracking

and replace as necessary

Servicing the Plungers

NOTE: Plunger repair kit,

P/N 801–474 is available to

replace retainers, o–rings, washers and

backup

rings for three cylinders.

1. Loosen

the plunger retaining screw five to six turns,

using

an M10 wrench. Push the plunger towards

the

crankcase to separate the plunger and retaining

screw.

2. Remove

the screw from the plunger and examine the

o–ring, backup ring and copper bearing/gasket

washer. Replace these parts if necessary using kit

801–474.

3. Remove the plunger and flinger from the plunger

shaft. Clean, examine and replace parts as

necessary.

4. Inspect the plunger shaft for oil leakage from the

crankcase.

If leaking is obvious, replace the oil seals.

Otherwise, DO NOT remove these seals as they

cannot be reused. An oil seal kit is available to

replace

the seals.

5. Lightly grease the flinger and oil seal, if it is being

replaced and replace them on the plunger shaft.

Then

install the plunger

6. Lightly

grease the retaining screw and the outer end

of the plunger

. Place the washer

, o–ring and backup

ring around the screw and install the screw through

the

plunger

. T

orque to 14.4 ft–lb (19.5 Nm).

NOTE: If you plan to replace the packings, refer to

Servicing

the V–Packings.

7. Lubricate the outside of each plunger . Slide the

manifold onto the crankcase, being careful not to

damage

the seals.

8. Install the capscrews and washers finger–tight.

Torque

the screws to 21.7 ft–lb (29 Nm) following the

tightening pattern (Figure 4). Uneven tightening may

cause

the manifold to bind or jam.

Figure 4