Graco Inc D 5 4, 716, D 5 D, D 5 B, D 5 5, D 5 E, D 5 A, D 5 3, D 5 C Install the muffler, 308981

6.Put grease on the diaphragm shaft (15), and carefully (do not damage the shaft u-cups) run the diaphragm shaft (15) through the center housing (11) bore.

7.Repeat step 5 for the other end of the diaphragm shaft (15), and torque the fluid-side diaphragm plates (105) to 80 to 90 in-lb (9 to 10 N-m) at 100 rpm maximum.

Overmolded Diaphragms: The air cover bolts may make it difficult to assemble the overmolded diaphragms on the 515 pump. Two people are needed. Use a flat surface that fits within the bolt pattern to apply pressure on the diaphragm that has already been assembled. Apply pressure until the diaphragm shaft sticks out of the other end of the center housing far enough to attach the second diaphragm assembly. Screw the assembly into the shaft (15) hand tight.

8.Install the muffler (3).

9.Make sure all the check valve parts are in place. See Fig. 7 on page 15.

10.Reinstall the fluid covers (101) and manifolds (102 and 103), and torque the fluid cover and manifold nuts (109) to 80 to 90 in-lb (9 to 10 N-m). See Torque Sequence, page 29.

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