13
177-999H
T100 Medium - Hydraulic Section Service
Note: The numbers in parentheses are the Reference
Numbers shown in the Parts Section of the manual.
Hydraulic Section
Disassembly
Manifold Disassembly
a.
See Power End Parts Illustration in Parts List.
Remove drain
plug (40) from bottom of pump and drain oil into container
(capable of holding 20.5 qts [19.4 liters] of oil). Dispose of
old oil in an approved way.
b. Replace drain plugs.
c.
See Fluid End Parts View.
Remove eight bolts (92) around
inlet retainer plate (87).
d. Remove eight hex nuts (26) from fluid end of pump. Install
four 177-393 Extender Studs from T100 Tool Kit on studs (20).
Carefully slide manifold (84) forward along extender studs
to allow access to diaphragm plate (52).
a.
See Diaphragm Parts View.
Remove two screws (79), two
O-rings (83) and follower (82).
CAUTION: If a diaphragm has ruptured and foreign
material or water has entered the oil reservoir, do not
operate the pump. Check all diaphragms, then flush the
reservoir completely and refill it with fresh oil. Never
let the pump stand with foreign material or water in the
reservoir, or with the reservoir empty.
b. Remove the diaphragm (78) and diaphragm back-up
ring (81). Inspect diaphragm carefully for any abnormal
conditions. A ruptured diaphragm generally indicates a
pumping system problem, and replacing only the diaphragm
will not solve the larger problem. Inspect the diaphragm for
the following:
•
Small puncture
. Usually caused by a sharp foreign object
in the fluid.
•
Diaphragm pulled away
from the center screw or from
the cylinder sides. Usually caused by fluid being frozen
in the pump, or by overpressurization of the pump.
•
Diaphragm becoming stiff
and losing flexibility. Usually
caused by pumping a fluid that is incompatible with the
diaphragm material.
•
Slice in ridge of diaphragm
. Occurs when diaphragm
is operated at cold temperatures.
•
Diaphragm torn concentrically in the mid convolute
area.
Usually an indication of an outlet vacuum condition.
c. If needed replace diaphragm.
d. Replace diaphragm back-up ring if needed.
81
78
82
83
79
W0547B
W0547B
75
74
73
71
72
54
77
69
76
80
Note: Make sure back up ring (81) orientation
arrow points towards the diaphragm (78).
Diaphragm Parts
Diaphragm Disassembly
a.
See Bias Rod Parts and Diaphragm Parts Views.
Remove
diaphragm parts as in steps a. through d. above.
b. Remove screw (80) and diaphragm clamp (76) with valve
arm (69) and two attaching screws (77).
c. Remove valve spool (54) from diaphragm plate (52).
d. Check diaphragm clamp for any rough surfaces, edges, or
corrosion. Replace if necessary.
e. Unscrew bias tube cap (72).
f. Remove bias rod parts: bias spring (71), bias rod (73), spring
guide (74), and screw (75).
g. Inspect rod parts. Smooth surfaces and edges as necessary
with emery cloth or fine file. Replace parts as necessary.
81
78
82
83
79
W0547B
W0547B
75
74
73
71
72
54
77
69
76
80
Note: Make sure back up ring (81) orientation
arrow points towards the diaphragm (78).
Bias Rod Parts
Bias Rod Disassembly
WARNING: Manifold (84) and assembled parts weigh
over 200 pounds (91 kg) and are a two man lift. Use
care in handling to prevent personal injury or damage
to equipment.
