52
Operation Manual
Rupture Disc Inspection
1. Use an adjustable wrench to remove the
cap (Figure 84) from the rupture disc as-
sembly.
2. Remove the rupture disc from the base
and inspect.
3. Verify a disc is installed and has not been
damaged. Replace as necessary.
4. Install the upper housing back onto the
assembly.
5. Repeat for the remaining rupture disc.
Packing Replacement
Removal
1. Relieve pressure from the pump, shut off
the engine and disengage the clutch.
2. Turn off the water supply and drain the
water tank.
3. Open the rod box cover.
4. Disconnect the water lubrication lines, if
equipped.
5. Position the plunger to be serviced so
that it is at bottom dead center (pony rod
is fully retracted towards crankshaft). Pull
the drive belts to rotate the pump (Figure
86)
ATTENTION
Installation of rupture discs with a burst pressure
no greater than 1.4 times the working pressure is
required by Jetstream for warranty coverage on
this pump.
WARNING
!!
Use caution when rotating the pump as this can
be a pinch hazard.
Figure 85: Disc Removal.
Rupture Disc
Figure 84: Housing/Cap Removal (15K Manifold Shown).
Cap
Figure 86: Rotating the Belt Drive.
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