Graco Merkur A Series Repair And Parts Manual page 8

Repair
F . 6. Assemble piston/rod assembly and cylinders.
IG
12. Lubricate and install the seal (25*†) on the bottom of
the lower cylinder (2).
13. Install the o-ring (26†) and intake seat (22†) into the
top of the inlet housing. Lubricate the o-ring. The
seat (22†) is reversible. Turn over or replace as
needed.
8
14. Lubricate the seal (25*†) and threads of the lower
1
3
F
IG
15. Keep upright to screw the housing (23) into the
21*
2
Displacement Pump
25*
†
LW025A–LW050A
ti12414a
LW075A–LW150A
16. Torque wet cup (5) to 58-62 ft-lb (78-84 N•m).
cylinder (2). Place the ball (24◆) on the seat (22†).
. 7. Replace intake ball and seat.
lower cylinder (2) hand tight, so the seat remains
firmly in place. Then clamp the cylinder in a vice and
torque as specified in the following table.
25
✓
24
✓
22
✓
26
✓
23
ti11694a
Torque
58-62 ft-lb (78-84 N•m)
78-82 ft-lb (105-111 N•m)
312792F