Graco Inc. 800-707 Pressure Washer User Manual


 
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.
T
orque Chart
Pump Part
Thread T
ool Size
Torque
Plunger
Retainer
M5 1
1 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.