SECTION 7
HIGH PRESSURE WATER
p. 7-11
80078868
TABLE 7-5 TORQUE SPECIFICATIONS—
HARD SEAL END CAP (HSEC)
Nominal Plunger Size (Intensifier) -14 -18
Plunger Diameter 7/8 (0.875”) 1-1/8 (1.125”)
Cylinder Bore Diameter 1.125” 1.375”
HSEC Jackbolts 6 ea, 7/16-20 thread 8 ea, 7/16-20 thread
Wrench Size HSEC Jackbolt 3/8-inch
1
st
Stage Jackbolt Tightening Hand Tight
Torque (ft-lb) 20
Torque (N-m) 27
2
nd
Stage
Tightening Sequence Crossing Pattern (Note
[1])
Torque (ft-lb) 35
Torque (N-m) 48
3
rd
Stage
Tightening Sequence Crossing Pattern (Note
[1])
Torque (ft-lb) 35
Torque (N-m) 48
4
th
Stage
Tightening Sequence Circular Pattern (Note
[2])
Note [1]: Crossing Pattern: tighten pairs of opposing jackbolts, for example, as
shown in numbered sequence in Figure A
Note
[2]: Circular Pattern: tighten jackbolts in sequence, proceeding in clockwise or
counter clockwise manner around bolt circle.