Repair
14
312793L
17. Put the hex of the piston (45) in a vise, then use a
23 mm socket to remove the piston rod (31).
18. Remove the piston o-ring (32) and seat (33).
Remove from vise and tip out the check ball (34)
and spring (36).
19. If the bellows is damaged, see Replace the Bel-
lows, page 11. If not, leave the bellows attached to
the connecting rod.
Reassembly
1.
Clamp the hex of the piston (45) in a vise. Install
new spring (36) on the ball stop.
2.
Install check ball (34) and seat (33) in the top of the
piston. Grease and install new o-ring (32).
3.
With hex of piston (45) still in vise, apply thread
lubricant and then use a socket to reattach the dis-
placement rod (31). Torque to 91-109 ft-lb
(123-148 N•m).
4.
Clamp the hex of piston rod in vise. Install new
check ball (47) and seat (46) in the bottom of the
piston. Grease and install new o-ring (32).
5.
Grease and reinstall the flow-through nut (44).
Torque to 74-86 ft-lb (100-117 N•m).
6.
Place the packing nut (20) upside down on the
bench so packings will align properly.
V-Packing Models: Lubricate and install the female
gland (26), new v-packings, 24, 25) and the male
gland (23) in the packing nut. Lips must face up,
so they will face toward the cylinder when the
packing nut is installed. Push packings all the way
in.
.
U-Cup Models: Lubricate and install the bearing
(49), the u-cup packing (50), and the spring clip
(51). U-cup must face up, so it will face toward
the cylinder when the packing nut is installed.
F
IG
. 8. Piston check.
F
IG
. 9. Ball stop spring
45
31
32
34
36
33
ti14536a
Torque to 91-109 ft-lb
(123-148 N•m).
3
Apply thread lubricant.
2
Apply grease.
1
2
3
1
ti15496a
F
IG
. 10. Throat v-packings
20
26
24
25
23
ti15255a
Apply lubricant.
1
1
1
1
1
Lips face up
(toward cylinder
when installed).
2
2
2
Summary of Contents for Merkur Bellows
Page 17: ...Repair 312793L 17 ...