Intensifier service notes
The following list was compiled from Flow customers
and Field Service Engineers. Following these suggestions
could help lower repair costs, shorten repair time, and
increase service life.
•
Everyone working with the equipment must read and
understand all applicable maintenance/service proce-
dures before starting any work on the intensifier
pump, then carefully follow the instructions as they
work through each procedure.
•
Carefully check the amount of water seepage from
the end bell weep hole. If leakage is less than 2 tea-
spoons (0.8 oz/23ml) per stroke and has not sud-
denly appeared or drastically increased, you do not
need to immediately stop the pump and change
seals. However, you should schedule maintenance as
soon as possible.
•
Seals should be replaced when you are not able to
maintain correct pressure.
•
Except for a complete overhaul or repairs that in-
volve the hydraulic oil cylinder, it is usually easier
and quicker to do repair work on the intensifier
while the intensifier remains on the pump frame.
However, this is not recommended in environments
where there is excessive dust or contamination.
•
Repair all cracked parts and leakage from the check
valve immediately.
•
Clean all parts with a clean, non-residue type solvent
such as Citra-safe or isopropyl alcohol. Use a dedi-
cated solvent tank if possible.
•
All threaded high-pressure connections
require
a
fresh, even coating of Blue Lubricant. Clean parts
thoroughly, then apply new lube. Do not substitute
another product.
•
All parts that contain high-pressure water (cylinder,
check valve body, tubing) are susceptible to stress fa-
tigue accelerated by stress risers. Stress risers result
when scratches, nicks, or other surface disruptions
are present. Do not attempt to rework damage. You
must replace the component.
•
High-pressure seal life and the service life of several
other parts is related to the stress put on the parts—a
function of stroke rate and water pressure. Exceeding
the pump rating can lead to increased cost and
downtime.
•
Keep all intensifier tools supplied with the pump in a
separate, locked cabinet. Substituting tools for those
supplied by or available from Flow is not
recommended.
•
Use the intensifier assembly fixture when reassem-
bling the low-pressure cylinder. Problems with the
manifold and leaking o-rings are significantly reduced
when the fixture is used.
•
Keep the work area clean. When reassembling any
intensifier, clean hands, shop coat, rags, parts, tools,
air, solvent and lubricants all contribute to lower
maintenance costs and reduced down time.
Torque specifications
Refer to the following table when specific torque re-
quirements are not listed in a service procedure.
Mounting bolts and machine screws shall not be
torqued beyond the manufacturer’s recommended
limits.
High-pressure gland nuts
U.S.
ft-lb
SI
N-m
1
4
-in.
15-25
20-34
3
8
-in.
35-45
47-60
9
16
-in.
60-75
80-100
Note
: Lubricate threads for all high-pressure tubing connec-
tions with Blue Lubricant before assembly.
© Flow International Corporation
M-376 | 15
CHAPTER 3
Maintenance Procedures
Summary of Contents for 94K HYPERPRESSURE
Page 1: ...94K HYPERPRESSURE INTENSIFIER M 376 REV G JUNE 2012...
Page 4: ...Notes 4 M 376 Flow International Corporation 94K HYPERPRESSURE INTENSIFIER...
Page 14: ...Replacement parts 14 M 376 Flow International Corporation 94K HYPERPRESSURE INTENSIFIER...
Page 16: ...Notes 16 M 376 Flow International Corporation 94K HYPERPRESSURE INTENSIFIER...
Page 30: ...Notes 30 M 376 Flow International Corporation 94K HYPERPRESSURE INTENSIFIER...
Page 36: ...Notes 36 M 376 Flow International Corporation 94K HYPERPRESSURE INTENSIFIER...
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Page 62: ...Notes 62 M 376 Flow International Corporation 94K HYPERPRESSURE INTENSIFIER...
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Page 65: ...Flow International Corporation M 376 65 CHAPTER 4 Troubleshooting...