0508193A Complete Paint Pump Block
This assembly will work on the following units:
Wagner Wave Series:
538, 642, 3866, 4275, 4566, 847, 4785.
SprayTech Models:
AirCoat, ED655 Plus.
Includes the following parts :
0278344 Paint pump head
0278242 Valve, Inlet assembly
0089482 Nylon Seal, Washer
0512250 Prime Spray Valve Assembly
0278335 Outlet Fitting
0093635 Outlet ball
0278241 Outlet Seat (alt# 0278280)
0047485 Outlet Spring
0278362 Outlet Seal
0278361 Ball Stop
9871073 O-RING, Black, .614 ID X .754 OD, for Outlet
0270494 Ring, Insert (fits above diaphragm)
And includes the entire pusher parts, which include:
0278337 Pusher Body
0278250 Pusher Stem
0278368 Pusher Spring
0278340 Pusher Washer
0156646 Pusher Seal
Parts NOT included and needed off the old head are as follows:
A: The 4x head bolts and 4X locking washers that attach the head to the pump.
B: The small return hose/tube fitting. (For suction set models, the part# is 0088715) (Hopper feed models use a different plastic fitting)
With this part, we would recommend replacing the diaphragm at the same time:
0278240 Diaphragm (Green)
And if any milky substance is noticed in the hydraulic fluid it should be replaced :
Wagner Hydraulic Fluid - Quart
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