118
Section 5 - Scheduled Maintenance
15. Slide the plunger back against the pony rod.
Reinstall the plunger coupling to the plunger
and pony rod. Make sure both halves of the
plunger coupler face the same way.
16.
Tighten the coupler bolts evenly to specifica
-
tions.
17. Reactivate the truck and the water blasting
system by following the steps in the Start Up
Procedure.
18. Turn on the charge water pump and verify
that the lubrication water is flowing normally.
Use the metering valves to adjust water flow
to the packing if necessary.
19. Verify proper operation.
Stuck Packing Replacement Procedure
Use this procedure to free the packing when it is
stuck in the stuffing box and attempts to remove
it following the standard procedure have failed.
NOTICE:
T H E S T E P S I N T H I S P R O C E D U R E S H O U L D O N LY B E
PERFORMED AS A LAST RESORT. IT WILL REQUIRE THE
TRUCK TO BE PLACED IN WORK MODE WITH THE WATER
BLASTING SYSTEM ACTIVATED BY FOLLOWING THE STEPS
IN THE START UP PROCEDURE.
1. Perform steps 1 thru 6 in the typical packing
replacement procedure.
2.
Thread the gland nut back into the stuffing
box 3 full turns. Make sure at least 3 threads
are engaged in the stuffing box.
3. Pull the plunger out until it is against the
pony rod. It is important for the plunger to be
against the pony rod to prevent damage to the
plunger from being forced out of the stuffing
box suddenly by charge water pressure which
will be activated in the next step.
4. Make sure both water supply valves are
open and all personnel are clear of all water
blasting components. Activate the truck and
water blasting system following the steps in
the Startup Procedure. Do not activate the
PTO switch.
5. Make sure all personnel are well clear of all
water blasting components and turn on the
charge pump for 5 seconds then turn it off.
6. Shutdown the water blasting system and re-
turn the truck to the service position.
7. Remove the gland nut from the back of the
stuffing box. The charge water pressure should
have pushed the damaged packing out.
8. If packing is still stuck, repeat steps 1 through
7. The damaged packing is usually pushed out
on the first try, however, several attempts may
be required in some cases.
NOTICE:
IF THIS OPTION FAILS, THE HIGH PRESSURE MANIFOLD
WILL NEED TO BE OPENED TO REMOVE THE STUFFING
BOX AND EXTRACT THE PACKING.
Once the packing has been removed from the
stuffing box, continue with steps 6 thru 19 in the
typical packing replacement procedure.
DANGER
ENGAGING THE PTO SWITCH DURING THE STUCK PACKING
PROCEDURE WILL ENGAGE THE UHP PUMP DRIVE SYSTEM
CAUSING SEVERE DAMAGE TO THE GLAND NUT, STUFFING
BOX AND PLUNGER. IT COULD ALSO RESULT IN INJURY
TO PERSONNEL. ALWAYS MAKE SURE THE PTO SWITCH IS
NOT ACTIVATED AT ANY TIME DURING THE STUCK PACKING
REMOVAL PROCEDURE.
Summary of Contents for SK5500
Page 2: ......
Page 80: ...80 NOTES...
Page 135: ...135 Section 5 Scheduled Maintenance Hog Technologies...
Page 141: ...141 Appendix 2 Tools Spare Parts...
Page 142: ...142 Appendix 2 Tools Spare Parts...
Page 143: ...143 Appendix 3 Daily Report Pre Op Checklist 1 877 HOG ROAD WWW STRIPEHOGSUPPORT COM...
Page 152: ...152 NOTES...
Page 159: ......
Page 160: ......