© Titan Tool Inc. All rights reserved.
29
Servicing the Fluid Section
Use of non-Speeflo service parts may void warranty. Ask
for original parts made by Speeflo for best services. This
pump should receive a routine servicing after approximately
1,000 hours of use. Earlier servicing is required if there is
excessive leakage from the top packing or if pump strokes
become faster on one stroke or the other. The use of
Speeflo Piston Lube (P/N 314-480) is recommended as an
upper packing lubricant. Do not substitute oil, water, or
solvent for an upper packing lubricant.
Disassembling the Fluid Section
1. Remove the siphon hose assembly. Unthread the foot valve
housing (20) and the pump cylinder (14) with a strap wrench.
2. Slide the retaining ring (1) up with a small screwdriver,
then push the connecting pin (2) out.
3. Pull the displacement rod (6) through the lower cavity of
the motor/pump block.
4. Remove the motor/pump block,
PTFE
o-ring (3), upper
packing spring (5), and upper packing set (4).
5. Hold the displacement rod (6) in a vise by the flats at the
top of the displacement rod and remove the outlet valve
housing (13) with a wrench while holding the
displacement rod horizontal with a wooden support, if
necessary. Remove the seal washer (12), outlet valve
seat (11), outlet valve ball (10), outlet valve cage (9),
lower packing set (4), lower packing spring (8), and spring
retainer (7).
6. Using a 1/2” extension bar attached to a 1/2” drive
ratchet, insert the end of the extension bar into the square
opening of the foot valve cage (16) inside the foot valve
housing (20). Unscrew and remove the foot valve cage
from the foot valve housing.
7. Remove the
PTFE
o-ring (3), foot valve ball (17), foot
valve seat (18), and seat o-ring (19) from the foot valve
housing (20).
8. Replace the connecting pin (2) and retainer ring (1) with
new parts.
9. Remove the o-ring (15) from the pump cylinder (14).
Reassembling the Fluid Section
1. Place a new seat o-ring (19) into the groove in the bottom
of the foot valve housing (20).
2. Inspect the foot valve seat (18) for wear. If one side is worn,
flip the seat to the unused side. If both sides are worn, install
a new seat. Place the new or flipped seat (worn side down)
into the bore at the bottom of the foot valve housing (20).
3. Place a new foot valve ball (17) onto the foot valve seat
(18). Using a 1/2” extension bar attached to a 1/2” drive
ratchet, insert the end of the extension bar into the
square opening of the foot valve cage (16) and screw the
cage into the foot valve housing (20). Torque the cage to
300 in./lbs. (25 ft./lbs.).
4. Insert a new
PTFE
o-ring (3) into the groove of the foot
valve housing (20). Lubricate the o-ring using oil or grease.
5. After soaking the leather packings in oil (preferably
linseed oil), reassemble the lower packing set (4). Place
the set onto the outlet valve housing (13) with the peak of
the “V” packings pointing down toward the hex on the
outlet valve housing.
6. Inspect the outlet valve seat (11) for wear. If one side is
worn, flip the seat to the unused side. If both sides are
worn, use a new seat. Insert the outlet valve cage (9),
new outlet valve ball (10), new or flipped seat (worn side
away from ball), and a new seal washer (12) into the
displacement rod (6).
7. Clean the threads on the outlet valve housing (13) and
coat the threads with blue Loctite #242. Make sure the
Loctite is only on the threads.
NOTE: Use
PTFE
tape on all threaded pipe
connections.
CAUTION
8. Place the lower packing spring (8) onto the outlet valve
housing (13) followed by the spring retainer (7).
9. Screw the displacement rod (6) and the outlet valve housing
(13) together. Tighten in a vise to 900 in./lbs. (75 ft./lbs.).
10. Insert the
PTFE
o-ring (3) into the upper grove of the
motor/pump block.
11. Insert the upper packing set (4) into the motor/pump block
with the peak of the
“
V” packings pointing up toward the
motor.
12. Place the upper packing spring (5) into the motor/pump
block with the small tapered end facing up toward the
motor/pump block.
13. Insert the displacement rod (6) up through the upper
packings in the motor/pump block.
14. Align the holes in the displacement rod (6) and the
hydraulic piston rod and insert the connecting pin (2).
15. Thread the short threads of the pump cylinder (14) into
the motor/pump block and tighten with a strap wrench.
16. Place the o-ring (15) onto the top grove of the pump
cylinder (14).
17. Thread the foot valve housing (20) onto the pump cylinder
(14), tighten with a strap wrench, then back off to align the
siphon hose.
Fluid Section Cut-Away
Peaks of upper
packings must
face up.
Torque outlet
valve housing
to 75 ft./lbs.
(1095 N/m).
Use blue
Loctite.
Oil cup area
for piston lube
packing
lubricant.
Peaks of lower
packings must
face down.
Lubricate O-ring.
NOTE: It is not necessary to over-tighten the foot
valve. O-ring seals perform sealing function
without excessive tightening. Full thread
engagement is sufficient. The foot valve may
be rotated backward up to 1/2 turn from full
engagement for convenient hose position.
For siphon hose attachment, it is critically
important that the threads of the siphon hose
fit snugly into the foot valve with the hose
assembly couplings
PTFE
taped and sealed to
prevent air leakage.
NOTE: The packings must be soaked in oil before
installation.
