© 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 retainer 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 wooden support, if necessary. Remove
the seal washer (12), outlet valve seat (13), outlet valve
ball (10), lower packing set (4), lower packing spring (9),
sleeve (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 ball cage (16) inside the foot valve housing (20).
Unscrew and remove the ball 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 ball cage (16) and screw the ball
cage into the foot valve housing (20). Torque the cage to
240 in./lbs. (20 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 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.
8. Place the lower packing spring (9) onto the outlet valve
housing (13) followed by the sleeve (8) and spring retainer (7).
NOTE: Use
PTFE
tape on all threaded pipe
connections.
CAUTION
9. Screw the displacement rod (6) and the outlet valve housing
(13) together. Tighten in a vise to 700 in./lbs. (58 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 and 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.
Wet 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 housing. O-ring seals perform sealing
function without excessive tightening. Full
thread engagement is sufficient. The foot valve
housing 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 housing with the
hose assembly couplings
PTFE
taped and
sealed to prevent air leakage.
NOTE: The packings must be soaked in oil before
installation.
