© Titan Tool Inc. All rights reserved. 19
155-559 Fluid Pump Service Information
IMPORTANT: Use of non-Titan manufactured service parts
may void warranty.
The 155 Series Pump should receive a routine servicing after
approximately 1000 hours of use or earlier if there is excessive
leakage from the top packing, or if pump strokes become faster
on one stroke or another. The use of Titan Lubrisolv Part #
310-200 is recommended as an upper packing lubricant. DO
NOT SUBSTITUTE oil, water or solvent for an upper packing
lubricant.
Disassembly Procedure
1. Remove siphon hose assembly.
2. If the pump is connected to air motor, hold motor piston
rod at wrench ats and unthread coupling nut (1) to
separate pump from motor.
3. Unthread and remove foot valve (16) and pump cylinder
(12) to separate from pump block (2) and remove ball (15),
ball stop (13), ball cage (14) and O-ring (11).
4. Secure piston seat assembly (10) in a vise and unthread
displacement rod (6) to remove packing set (3), spring (8)
and washer (7).
5. Inspect and clean all parts. Reject cylinder (12) and/or
displacement rod (6) if hard chrome is grooved or worn
through to gray metal.
Reassembly Procedure
NOTE: If cylinder (12) and displacement rod (6) are
reusable, then only a minor kit part # 155-051 or
155-055 may be required for reassembly.
1. Place new packing set (3) over piston seat (10) with “V”
packings point downward (V) and reassemble with ball
(9), spring (8),washer (7) and displacement rod (6) in that
order. Tighten and use Loctite on clean threads.
2. Insert new upper packing set (3) into pump block (2).
IMPORTANT: Peak of “V” packings must point upwards on
reassembly.
Install upper packing spring (4) and washer.
3. Insert displacement rod assembly (6) through pump block
(2) holding upper packing set (3) in place with ngers.
4. Lubricate the threaded ends of cylinder (12) including the
O-rings (11) to protect them on reassembly.
5. Thread cylinder (12) into pump block (2). Do not
overtigthen.
6. Replace ball (15), ball cage (14) and ball stop (13) into
foot valve (16) and thread into cylinder (12). The O-rings
(11) should be lubricated to protect it on replacement of
foot valve. It is not necessary to overtighten as seal is
obtained when parts are fully threaded together.
NOTE: It is not necessary to overtighten foot valve and
cylinder into pump block. O-ring seals perform
sealing function without excessive tightening.
Fullthreadengagementissufcient.Thefoot
valve may be rotated back up to 1/2 turn from full
engagement for convenient hose position.
NOTE: For siphon hose attachment, it is critically
importantthatthethreadsofthesiphonhoset
snugly into the foot valve with the hose assembly
couplings PTFE taped and sealed to prevent air
inlet leakage.
Service Kits
Pump service kits, minor
ITEM
NO.
PART
NO.
DESCRIPTION
155-
051
155-
055
3 155-052 Packing set, leather 2
3a 155-053 Packing set, Leather/Poly 2
9 155-225 Ball, S.S. 1 1
11 891-373 O-ing 2 2
15 178-700 Ball, S.S. 1 1
426-051 Loctite sealant 1 1
Pump service kits, major
ITEM
NO.
PART
NO.
DESCRIPTION
155-
051
155-
055
155-051 Minor service kit 1
155-055 Minor service kit 1
6 155-981 Rod, displacement 1 1
12 155-932 Cylinder 1 1
