16
177-999H
Diaphragm Assembly
a.
See Diaphragm Parts View.
CAUTION: It is important to observe the following steps d.
and e. to ensure proper assembly.
b. Install the diaphragm (78) and back-up ring (81) into
diaphragm plate (52). Seat diaphragm edge with fingers.
Make sure diaphragm bead is fully seated into the square
groove of diaphragm plate.
Note: Refer to Diaphragm Parts View for correct installation
orientation of diaphragm and back-up ring.
c. Install two O-rings (83) into follower (82).
d. Attach following to diaphragm clamp with two screws (80).
Use Loctite 242 and torque to 60 in-lbs (7 N-m).
e. Repeat steps a. through e. for three diaphragms.
Manifold Assembly
a.
See Fluid End Parts View.
Prior to manifold assembly, inspect
mating surfaces of pump and manifold. Make sure they are
clean and free of any foreign material. Ensure diaphragm
beads are seated.
b. Carefully slide manifold (84) onto pump studs. If used,
remove four 177-393 Extender Studs from pump and install
eight bolts (92) around inlet retainer plate (87) and hand
tighten.
CAUTION: The manifold should slide cleanly onto the
pump and the back-up rings should be engaged into
the mating grooves in the manifold prior to tightening.
Failure to slide the manifold all the way on engaging the
back-up rings prior to tightening can cause the back-
up ring to be pinched and cause the pump to leak. If
the manifold does not slide easily onto the pump, use
scotch-brite or fine abrasive paper to clean the outer
edge of the groove where the back-up ring fits.
c. Thread on eight hex nuts (26) and hand tighten.
d. Tighten hex nuts in torque sequence shown in illustration
following to 450 ft-lbs (610 N-m).
e. Thread on eight bolts (92) and hand tighten.
f. Tighten bolts in torque sequence shown in illustration
following to 300 ft-lbs (407 N-m).
g. Fill pump with oil to cover marks on dipstick. Approximately
18 qts (17 liters)
with flat back cover
or 20.5 US quarts (19.4
liters) with oil monitor back cover.
h. Follow instructions in Before Initial Start-Up and Initial
Start-Up Section to start pump.
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.
Hydraulic Section Assembly
T100 Medium - Hydraulic Section Service (Cont’d)
Diaphragm Plate Assembly
a. Replace diaphragm plate gasket (24) if damaged.
CAUTION: Ensure plungers (51) are lubricated with oil
before assembly. Dry plungers and cylinders can bind
on start-up.
b.
See Hydraulic Section Parts Illustration.
Carefully slide
diaphragm plate (52) and assembled parts along pump studs
flush with Power End of pump.
c. Screw two cap screws (56) into diaphragm plate. Torque to
50 ft-lbs (68 N-m).
d. Hand rotate to assure smooth operation.
Bias Rod Assembly
CAUTION: It is important to observe the following steps a.
and b. to insure proper assembly.
a. See Bias Rod Parts View. Clean internal threads of bias rod (73)
and threads of screw (75). Make sure threads are dry and
oil free. Prime threads with Loctite Primer N.
b. Apply a small amout of No. 271 Loctite to internal threads of
bias rod and screw. Insert screw through spring guide (74)
and thread into bias rod.
c. Install bias rod assembly parts into diaphragm plate (52).
Thread bias tube cap (72) into bias tube with: bias spring (71),
bias rod, spring guide, and screw. Make sure spring tangs
mate with spring guide and bias tube cap. Use Loctite 242 on
bias tube cap and torque to 50 ft-lbs (68 N-m).
d. Insert valve spool (54) into diaphragm plate (52).
e. Thread screw (80) through diaphragm clamp (76) with valve
arm (69) and two attaching screws (77) into bias rod. Use
Loctite 242 on screw (80) and torque to 20 ft-lbs (27 N-m).
CAUTION: Use care not to over-tighten as that can cause
the rod to rotate and bind the bias spring. Verify the bias
spring is not bound by pulling the diaphragm clamp out
and verifying that the clamp has full range of motion.
f. Repeat for three rod assemblies.
WARNING: Diaphragm plate (52) and assembled
parts weigh over 100 pounds (45 kg) and are a two
man lift. Use care in handling to prevent personal
injury or damage to equipment.
Note: To ease handling of diaphragm plate, install two
Eyebolts (177-058) from T100 Tool Kit in place of two
Setscrews (55) on top of diaphragm plate.
