Wren H Series, Operation Manual

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5.Continue this cycling operation of advance and retract until the nut is no longer turning
and the pump gauge reaches the preset pressure. The piston rod will retract when the
retract button is pressed and under normal conditions, an audible “Click”will be heard as
the tool resets itself.
6.Continue to cycle the tool until it “Stalls”and the preset psi/torque has been attained.
7.Once the nut stops rotating, cycle the tool one last time to achieve total torque
H SERIES
CONNECTING THE POWER HEAD WITH THE LOW PROFILE CASSETTE
Both the square drive cartridge link and the low clearance ratcheting link are inserted and
removed from the power head in the same way. The “Hook”described by the link's drive
plates is inserted around the fixed pin of the power head, and the link is swung down to rest
along the base of the power head cylinder. At this point, the link pin holes of the power
head and link will align. Insert the link pin to secure.
Ratchet Link
Power head
Link Pin
FIG7
LOW PROFILE WRENCH POSITIONS
The position of the tool relative to the nut determines whether the action will tighten or
loose the nut. The power stroke of the piston assembly will always turn the ratchet hex to
ward the shroud
FIG8
Tightening Loosening
Drawing of Positions