VALCO MELTON D4, Manual

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IS0299 - D Series Coupling Upgrade Procedure
6
CAUTION! Remove only the (2) M8 hex head cap screws shown. Removing all of the bolts is not
necessary unless replacing the pump at the same time.
If the pump insulation blanket interferes with the installation of the
motor bracket, remove it and if desired, reinstall after completeing
this procedure.
8. Apply a small amount of antisieze to the threads of the (2) M8 hex head cap screws provided
(884XX003). Use the (2) M8 hex head cap screws and (2) M8 lock washers provided (784XX476) to
fasten the new motor bracket (776XX313) to the pump. Tighten the fasteners by hand first, ensuring that
the bore in the bracket mates with the hub on the pump. There will be a small gap of approximately 1/16”
between the bracket and pump to minimize heat transfer.
9. Using a square, ensure that the motor bracket is perpendicular to the chassis before tightening the (2) M8
hex head cap screws.
10. Using a ratchet, drive extension, 13mm socket, and torque wrench, tighten the (2) hex head cap screws
to 20 ft-lbs (27.1 N-m) evenly in increments of 5 ft-lbs (6.8 N•m). Using the square, verify that the motor
bracket is still perpendicular to the chassis.
11. Fasten the support brackets provided (776XX314 & 776XX315) to the new motor bracket using the M6
hex head cap screws (884XX223) and M6 washers (798XX302) provided. Be sure to start the threads of
each screw before tightening. Tighten all screws by hand to seat the brackets, then use a torque wrench
to tighten each screw to 106 in-lbs
(12 N-m).