Pump Service 1535 And 2030 Pressure Washers - Graco 1535 Instructions-Parts List Manual

Pump Service: 1535 and 2030 Pressure Washers
Repair kits are available. See the individual repair sections, the Parts Lists on pages 15 to 23,
and Pump Repair Kits on pages 21 and 23. For the best results, use all parts in the kits.
Relieve the pressure
(see page 5) before you
proceed with service.
NOTES:
D The following metric wrenches are needed: 5 mm,
13 mm, and 22 mm.
D There is a tool kit to aid in servicing the pump.
Tool Kit 800271 includes tools to aid in removing
packing retainers.
Valves
NOTE: For a set of six valves, order Valve Assembly
Kit 801472.
1. Remove the hex plug from the manifold using a
22 mm socket.
2. Examine the O-ring under the hex plug, and
replace if cut or distorted.
3. Remove the valve assembly from the cavity; the
assembly might come apart.
4. Install the new valve. Install the O-ring and hex
plug. Torque to 33 ft-lb (45 NSm).
NOTE: Retorque the plug after 5 hours of operation.
Pumping Section
1. Remove the eight capscrews and lockwashers
from the manifold using a 5 mm wrench.
2. Carefully separate the manifold from the
crankcase.
NOTE: You might have to tap the manifold lightly
with a soft mallet to loosen it.
CAUTION
To avoid damage to the plunger or seals, keep the
manifold properly aligned with the ceramic plungers
when you remove it.
3. Carefully examine each plunger for any scoring or
cracking, and replace as necessary.
10
308572
Servicing the Plungers
NOTE: Plunger Repair Kit 801474 is available to
replace retainers, O-rings, washers, and backup rings
for three cylinders.
1. Loosen the plunger retaining nut five or six turns
using a 13 mm wrench. Push the plunger towards
the crankcase to separate the plunger and
retaining screw.
2. Remove the nut from the plunger, and examine the
O-ring, backup ring, and copper bearing/gasket
washer. Replace these parts if necessary using
Plunger Repair Kit 801474.
3. Remove the plunger and flinger from the plunger
shaft. Clean 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,
because they cannot be reused. Oil Seal Kits are
available for replacing the seals. See Pump
Repair Kits on page 21.
5. Lightly grease the flinger (and oil seal if it is being
replaced), and replace on the plunger shaft. Then
install the plunger.