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Graco Inc. Hydra-Clean 800-706 User Manual

Page 17

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17

308–532

Reassembly:

V–Packing Models:
1. Lubricate high pressure packing area in manifold.

2. Insert male adapter with notches down and “v” side

up.

3. Lubricate v–packings and install one–at–a–time

with grooved side down.

4. Next install female adapter with grooved side

down.

5. Examine seal case o–ring and replace if worn.

Lubricate new o–ring before installing.

6. Thread seal case into manifold and tighten with key

wrench.

High Pressure Seal Models:
1. Lubricate seal area in manifold.

2. Carefully square seal into position by hand with the

metal grooved side up.

3. Examine seal case o–ring and replace if worn.

Lubricate new o–ring before installing.

4. Next secure high pressure seal into position by

threading seal case into manifold. T ighten seal

case with key wrench.

Low Pressure Seal–All Models:
1. Examine seal for wear or broken spring and lace if

necessary.

2. Install low pressure seal in seal case with garter

spring down.

3. Reinstall snap ring. Be certain snap ring is a tight fit.

Replace if it can be easily turned.

4. Replace manifold on pump as described and

torque per chart.

Servicing Crankcase Section

1. While manifold, plungers and seal retainers are

removed, examine crankcase seals for wear.

2. Check oil level and for evidence of water in oil.

3. Rotate crankshaft by hand to feel for

smooth

bearing movement.

4. Examine crankshaft oil seal externally for drying,

cracking or leaking.

5. Consult factory or your local distributor if crankcase

service is evidenced.

Torque Chart

Pump Part Thread

Tool Size

Torque

Plunger

Retainer

M5

11 mm hex 80 in. lbs.

Manifold

M8 x 1.25

M10 x 1.25

M10

13 mm hex

17 mm hex

17 mm hex

125 in. lbs.

217 in. lbs.

217 in. lbs.

Valve

Covers

24 mm

27 mm

75 ft. lbs.

75 ft. lbs.

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