Graco GM 3500 Instructions-Parts List Manual page 16

5. Disconnect the red, black and white wires from the
rectifier (307) which are sheathed with the conductor
(309). Unscrew the connector (313 or 105) from the
control box, pulling the conductor and wires out with
it.
6. For the upright sprayer, remove the nipple (312) from
the elbow (314).
7. Use a wrench to hold the hex of the adapters (A) while
removing the elbows (314 or 322).
RED
WHITE
BLACK
RED
RED
Fig 16–1
PRESSURE CONTROL REPLACEMENT
FOR UPRIGHT CART SPRAYERS
307
313
FOR LO–BOY CART SPRAYERS
307
WHITE
BLACK
8. Reassemble in the reverse order.
For the Upright carts, guide the new pressure control
wires through the wire clamps (32). Fasten the wire
clamps to the cart with the same screws, lockwash-
ers, and nuts (62, 9, 61) which hold the bracket (67)
to the cart. See Fig 15–2.
For the Lo–boy carts, guide the pressure control
wires through the single wire clamp (32), and install
the screws (62) and washers (9) to hold the bracket
(67) to the cart. See Fig 15–2.
9. Perform the Pressure Control Adjustment on page
17 before regular operation of the sprayer.
A
314
312
309
309
322
A
RECTIFIER (307) CONNECTIONS
RED BLACK
WHITE GROUND
105
TOP VIEW