Displacement Pump Repair
Fig. 21
1
2
01070
Torque to
5 inĆlb (0.57 N
m)
107
*109
110
108
Apply one drop of
sealant to these
threads
2
3. Tighten the nut (110) onto the piston valve (108) to
5 in-lb (0.57 N
m). See Fig. 21.
NOTE: Note the alignment
of the piston (108) to the
nut (110). Maintain this alignment through step 8.
4. Clean all residue from the piston valve threads.
Apply one strip of adhesive, supplied, to the
threads.
5. Place the ball (109*) on the piston valve (108). See
Fig. 21.
CAUTION
Step 6, tightening the piston valve into the rod, is
critical. Follow the procedure carefully to avoid
damaging the packings by overtightening.
6. Hand tighten the valve into the piston rod just until
the nut (110) contacts the rod. See Fig. 22.
7. Place the flats of the rod (107) in a smooth jaw
vise.
8. Carefully tighten the nut (110) against the piston
rod to 30 ft-lb (40 N
m). See Fig. 22.
Use two wrenches to maintain the alignment
mentioned in the
NOTE
below Step 3.
Fig. 22
1
2
01071
108
110
107
Torque nut against ro
d
to 30 ftĆlb (40 N
m)
Do not allow nut (110)
to move relative to
piston (108) when
tightening piston
against rod.
1
2
9. Stack these parts one at a time into the top of the
manifold (101): the male gland (106*), alternately
three plastic packings (104*) with two leather
packings (105*), and then the female gland (103*).
See Fig. 23.
10. Install the packing nut (102) and plug (124), but
leave loose for now. See Fig. 23.
Fig. 23
1
3
4
2
01073
107
123
102
104*
106*
101
117
112*
114*
108*
122*
121*
109*
*103
*105
*116
111
*113
115
120
*119
118
Leather packings
Poly packings
Lips of V–packings
must face down
Lips of V–packings
must face up
5
Torque to 53 ft–lb
(71 N.m)
1
3
2
3
2
4
1
4
5
110
Содержание Fuller O'brien Paints Pro 501st 231
Страница 5: ...Notes...
