JETStream X Series - Page 59

51
X-Series Waterblast Unit
SERVICE
Fluid End
Checking Manifold Bolt Torque
Verify the head bolts are properly tightened.
Check the bolt torque in a crisscross sequence
starting with the center bolts (Figure 82).
Proper torque is 350 ft.-lb. (470 N·m) which can
be achieved with a few hammer strikes on the
pump wrench.
Checking Gland Nut Torque
1. Open the rod box cover.
2. Place the long end of the pump wrench in
one of the gland nut holes.
3. Use a 5 lb. (2 kg) hammer to hit the wrench
in the direction (Figure 83) to tighten the
gland nuts. Hit the wrench about three
times using moderate force. This will sup-
ply sufcient torque on the nut.
4. Repeat for the remaining nuts.
5. Close the rod box cover.
ATTENTION
Figure 82: Tightening Sequence.
Figure 83: Tightening the Gland Nut.
It is helpful to mark gland nuts once they are
conrmed to be operating correctly. A permanent
marker can be used to mark a line across the top
of the gland nut and stufng box. This will allow
easy visual conrmation that the gland nuts are
properly torqued.