© Titan Tool Inc. All rights reserved. 23
181-556 Fluid Pump Service Information
IMPORTANT: Use of non-Titan manufactured service parts
may void warranty.
The 181 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. Test pump before disassembly. Follow test procedure in
Troubleshooting Guide - Fluid Section.
2. Remove siphon hose assembly.
3. Remove stanchion nuts (20) and washers (21).
4. If the uid section is connected to an air motor, hold the air
motor piston rod at the wrench ats and unthread coupling
nut (25) to separate pump from motor.
If the motor is connected to a hydraulic motor, remove
allen set screw between the two ats on hydraulic motor
rod. Hold the hydraulic motor rod at the wrench ats
and unthread coupling nut (25) to separate pump from
hydraulic motor.
IMPORTANT: Never use a pipe wrench, pliers, etc. on the
chrome part of hydraulic, air or fluid section rod.
5. Remove roll pin (1) on connecting rod (24). Remove
connecting rod from displacement rod (2).
6. Unthread and remove foot valve (16).
7. Remove PTFE O-ring (18), O-ring (17), ball stop ring (13),
ball cage (14) and ball (15).
8. Remove cylinder (12).
9. Remove displacement rod (2).
10. Place piston seat (11) in a vise and use a wrench on the
ats to remove the displacement rod (2) from the piston
seat (11).
11. Remove lower packing set (10), spring (9), spring retainer
(8) and ball (19).
12. Remove upper packing spring (5), O-ring (7) and packing
set (4) from pump block (3).
13. Clean and inspect all parts. Inspect rod or pump tube’s
hard chrome for grooves, dents or worn areas. Replace if
hard chrome is damaged. Inspect valve seats and replace
if cracked or worn.
Reassembly Procedure
1. Insert upper packing set (4) into pump block (7)
IMPORTANT: Peak of “V” packings must point upwards on
reassembly.
2. Insert upper spring (5); small end of spring must go toward
the packing set.
3. Place packing set (10) over piston seat (11).
IMPORTANT: Peak of “V” packings must point downward
on reassembly.
4. Replace spring (9), spring retainer (8) and ball on piston
seat (11).
5. Thread seat back onto displacement rod (2).
IMPORTANT: Use Loctite on clean threads.
6. Insert displacement rod (2) assembly through upper
packing set (4) in pump block (3).
7. Place O-ring (7) on end of cylinder (12) and thread back
into pump block (3).
IMPORTANT: Lubricate all O-rings before assembly.
8. Insert ball (15), ball cage (14), ball stop retainer ring (13),
O-ring (17) and PTFE O-ring (18) into foot valve.
IMPORTANT: Lubricate all O-rings.
9. Thread foot valve (16) back into cylinder (12).
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 (16) may be rotated back up to 3/4 turn from
full engagement for convenient hose position.
10. Insert coupling nut (25) back onto connecting rod (24) and
thread connecting rod (24) back onto displacement rod
(2).
Service Kits
Pump service kit, minor (Part # 182-050)
ITEM
NO.
PART
NO.
DESCRIPTION QTY.
4 175-001 Packing set, leather 1
7 182-007
O-ring, PTFE
1
10 180-002 Packing set, leather 1
15 178-700 Ball 1
17 742-223 O-ring 1
18 174-001
O-ring, PTFE
1
19 920-103 Ball 1
Pump service kit, major (Part # 182-520)
ITEM
NO.
PART
NO.
DESCRIPTION QTY.
182-050 Pump service kit, minor 1
2 185-984 Rod, displacement 1
11 182-921 Seat, piston 1
12 182-932 Cylinder 1
