4
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4.1 Maximum Stroke Indicator
Maximum allowable tensioner stroke is visually
indicated by a painted groove located on the
puller’s circumference.
Continually watch for the maximum stroke
indicator during tensioning procedures. Stop
pressurizing the system immediately if the
indicator becomes visible.
If during any tensioning procedure, the
maximum stroke indicator appears before the
desired hydraulic pressure is reached: STOP
the pump, tighten nut(s) at the tensioner(s) and
release hydraulic pressure. Then, turn down the
threaded puller(s) to return the piston(s) back
into the tensioner(s).
To ensure proper tensioning, always repeat the
tensioning stage (start over) if the maximum
stroke indicator appears before the desired
hydraulic pressure is reached.
Continuing to pressurize the
system after the maximum stroke indicator
becomes visible may result in high pressure
hydraulic oil leakage. Serious personal injury
could result if a stream of pressurized hydraulic
oil penetrates the skin. Damage to tensioner
components and joint may also occur if
maximum stroke is exceeded.
Maximum
Stroke
Indicator
FIGURE 3, MAXIMUM STROKE INDICATOR
WARNING
3.0 SPECIFICATIONS
Major tensioner specifications, such as
maximum working pressure, maximum load
and maximum stroke are stamped into the side
of the hydraulic tensioner body. See
Figure 1. Be aware of these specifications
during installation and set-up.
FIGURE 1, TENSIONER DATA
4.0 FEATURES AND COMPONENTS
Refer to Figure 2 for a diagram of HydraMax®
Series Tensioner major components.
FIGURE 2, TENSIONER MAJOR
COMPONENTS
ENERPAC
HMXX DATE CODE
MAX WP 1500 bar (21,750 psi)
MAX LOAD xx kn (xxx.xx lbf)
MAX STROKE xx mm (x.xx in)
11
1
2
4
5
8
9
10
3
7
6
Key:
1 - Puller
2 - Spring Housing
Return
3 - Piston
4 - Grip Tape
5 - Body
6 - Coupler, Female
7 - Coupler, Male
8 - Bridge
9 - Snap Ring
10 - Socket
11 - Tommy Bar
Note:
The tensioner “load cell” includes
items 2, 3, 4 and 5 (assembled).
