© Titan Tool Inc. All rights reserved. 33
185-551 Fluid Pump Service Information
IMPORTANT: Use of non-Titan manufactured service parts
may void warranty.
The 185 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 Piston Lube Part
# 314-480 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 (19) and washers (20).
4. Hold the air motor piston rod at the wrench ats and
unthread coupling nut to separate pump from 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) or jam nut on connecting rod (22).
Remove connecting rod (22) from displacement rod (2).
6. Unthread and remove foot valve (16).
7. Remove PTFE O-ring (15), O-ring (14), ball cage
assembly (18) and ball (17).
8. Remove cylinder (8).
9. Remove displacement rod (2).
10. Place piston seat (13) in a vise and use a wrench on the
ats to remove the displacement rod (2) from the piston
seat (13).
11. Remove lower packing set (11), spring (10), spring
retainer (9) and ball (12).
12. Remove upper packing spring (6), packing set (4) and
O-ring (7).
13. Clean and inspect all parts. Inspect displacement rod’s
(2) and cylinder’s (8) 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 (3)
IMPORTANT: Peak of “V” packings must point upwards on
reassembly.
2. Insert upper spring (6); small end of spring must go toward
the packing set.
3. Insert spring retainer (9).
4. Place new lower packing set (11) over piston seat (13).
IMPORTANT: Peak of “V” must point downward on
reassembly.
5. Replace spring (10), spring retainer (9) and new ball (12)
on piston seat (13).
6. Thread piston seat (13) back onto displacement rod (2).
IMPORTANT: Use Loctite on clean threads.
7. Insert displacement rod (2) assembly through upper
packing set (4) in pump block (3).
8. Place new O-ring (7) on end of cylinder (8) and thread
back into pump block (3).
IMPORTANT: Lubricate all O-rings before assembly.
9. Insert new ball (17), ball cage (18), and new O-ring (14)
into foot valve.
NOTE: Ball cage pin (18a) to be in lower position unless
pump is to be used for heavy block ller or
roong materials.
10. Place new PTFE O-ring (15) on cylinder (8) and then
install foot valve assembly (16)
NOTE: It is not necessary to overtighten foot valve and
cylinder into pump block. O-ring seals perform
sealing function without excessive tightening.
Full thread engagement is sufcient. The foot
valve (16) may be rotated back up to 3/4 turn from
full engagement for convenient hose position.
11. Insert connecting rod (22) through coupling nut and thread
connecting rod (22) into displacement rod (2).
12. Insert roll pin (1) into connecting rod (22).
For siphon hose attachment, it is critically important that
the thread of the siphon hose t snugly into the foot valve
with the hose assembly couplings PTFE-taped and sealed
to prevent air inlet leakage.
Service Kits
NOTE: Minor service kit # 185-050 has polyethylene/
leather packings.
Minor service kit # 180-051 has leather packings.
Minor service kit # 185-052 has PTFE packings.
Pump service kit, minor CTR IND
PTFE
ITEM
NO.
PART
NO.
DESCRIPTION
185-
050
185-
051
185-
052
4 175-001 Packing set, upper 1
4 178-001 Packing set, upper 1
4 178-320 Packing set, upper 1
7 182-007
O-ring, PTFE
1 1 1
11 180-002 Packing set, lower 1
11 180-322 Packing set, lower 1
11 183-001 Packing set, lower 1
12 920-103 Ball 1 1 1
14 183-230 O-ring 1 1 1
15 182-007
O-ring, PTFE
1 1 1
17 314-180 Ball 1 1 1
426-051 Loctite Sealant 1 1 1
Pump service kit, major CTR IND
PTFE
ITEM
NO.
PART
NO.
DESCRIPTION
185-
500
185-
501
185-
502
185-050 Minor kit 1
185-051 Minor kit 1
185-052 Minor kit 1
2 185-984 Displacement rod 1 1 1
6 182-906 Spring, packing 1 1 1
8 183-930 Cylinder 1 1 1
