JETStream 4200 series - Checking the Water Lubrication System

Operation Manual
14
Lubrication Line Stuffing Box
Figure 9: Checking Lubrication.
Lubrication
Line
Needle Valve
Figure 10: Needle Valve Adjustment (40K).
Checking the Water Lubrica-
tion System
1. Lift the rod box cover to view the water lubrica-
tion system.
2. Look into the rod box and verify that lubrication
water is owing from the small holes in the bot-
tom of the gland nut wrench holes. (Figure 9).
3. Next, check the stufng box temperature by
very carefully placing your nger tips on the top
of the stufng box. The temperature should be
cool to warm but still cool enough that you can
keep your ngers on it for 10 seconds.
If there is no water ow, or the temperature is
too hot, or if steam is visible, the needle valves
need to be adjusted.
4. Adjust the needle valves (Figure 10) to in-
crease the water ow. The water should not
overow the top-most hole. If it does, excessive
splashing will occur, which could cause water
to be drawn into the power end, contaminating
the oil. Adjust the needle valves to prevent
excessive lubrication water ow. Re-check
the lubrication water ow periodically during
operation.
5. Once properly adjusted, system pressure can
be raised for waterblasting.
WARNING
!
There are moving parts inside the rod box that
can cause serious injury. Use extreme cau-
tion. Keep all tools out of the rod box while the
pump is running.