123
Section 5 - Scheduled Maintenance
Figure 1: A. Univalve Body & Seat - B. Suction Valve
Univalves Installed In Head
Installing Univalves:
1. Clean the valve sockets to make sure no dirt
and debris enters the UHP pump.
2. Lubricate the sockets and Univalve cartridges
with the grease provided in the Mobile Spare
Parts System.
3. Set the valve cartridge in place. Rock the car-
tridge slightly until it drops into position.
4. Use the palm of your hands and press equally
on each side to press the valve cartridges into
place.
5.
Replace the face seal in each stuffing box. Use
grease to help hold it in place during assembly.
6. Apply a thin coat of anti seize to the head bolt
threads.
7. Carefully rotate the head into position, insert
the head bolts and tighten finger tight.
8. Tighten the head bolts evenly in a crisscross
sequence beginning with the center bolts.
Tighten the bolts snug.
9. Finish tightening the head bolts in a crisscross
sequence beginning with the center bolts using
the 2 lb hammer and the 7/8” Jetstream tool.
Hit the Jetstream tool 3 times with the hammer.
NOTICE:
IT IS A GOOD IDEA TO REMOVE THE UHP HOSE AND FLUSH
THE UHP MANIFOLD WITH WATER BEFORE SETTING
PRESSURE.
Lapping Valves And Seats
The suction valve seat surfaces in the Univalve
cartridges should be lapped every 100 hours to
remove small pits or grit inclusions as preventative
maintenance. Slight damage in the seating surface
can also be repaired with the lapping procedure.
Lapping a valve to the seat creates a unique suc-
tion valve to Univalve cartridge seat seal. If the
valve is moved to another cartridge, it must be
lapped to that seat for a proper seal.
Disassemble and lap the valve and seat of one
Univalve cartridge at a time to keep the parts with
that cartridge. Always inspect the valve cartridge
for damage, then separate the suction valve from
the cartridge and lay the parts out on a clean
surface. Inspect them thoroughly for damage. If
any component is cracked or badly pitted or worn,
it will have to be replaced. Refer to the legend in
this section for descriptions of wear, damage and
imperfections that will need to be addressed.
If the suction valve and seat are in acceptable
condition or a new cartridge and suction valve is
being installed, use the following procedure to lap
the valve and seat.
Lapping the seating surfaces:
1. Separate the suction valve from the valve
cartridge.
2. Carefully inspect the valve seat and the suc-
tion valve to make sure they are in acceptable
condition.
Summary of Contents for STRIPE SH7500
Page 1: ...75 H Operations Manual...
Page 2: ......
Page 72: ...72 NOTES...
Page 108: ...108 NOTES...
Page 161: ...161 Section 5 Scheduled Maintenance...
Page 167: ...167 Appendix 2 Tools Spare Parts...
Page 168: ...168 Appendix 2 Tools Spare Parts...
Page 169: ...169 Appendix 3 Daily Report Pre Op Checklist 1 877 HOG ROAD WWW STRIPEHOGSUPPORT COM 60...
Page 178: ...178 NOTES...
Page 185: ......
Page 186: ......
