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Fault
Possible Cause
Corrective Action
Rams do not stroke (with
gauge pressure build up)
1. Coupler not assembled
2. Incorrect harness
assembly
1. Check couplers
2. Check harness
Puller will not screw down
bolt/stud
1. Oversize bolts
2. Differing thread form
1. Check bolt size
2. Check thread form
Bridge will not fit over nut
Incorrect socket/bridge
Check AF of nut corresponds
with socket and replace sock-
et/bridge as necessary
The nut is not turning when
the system is under pressure.
1. The hydraulic hose is not
connected properly to the
tool.
2. The bolt thread may be
damaged.
1. Release the pressure and
check the hose connec-
tion.
2. Release the pressure,
remove the tool and
rectify.
When detensioning the bolt
the tool becomes locked onto
the bolts.
1. Puller locked on nut
2. Puller locked on ram
1. See Section 7.3
2. See Section 7.3
The tensioner head assembly
will not retract.
1. Oil return to tank valve is
not open.
2. Coupler not assembled
1. Ensure that the oil return
to tank valve is fully open.
2. Check couplers
Hydraulic fluid visible at top/
bottom of tensioner Oil is leak-
ing from the tensioner body.
1. Maximum stroke achieved
– Relief valve activated
2. Leaking tensioner seals
1. Tighten nut and repeat
procedure
2. Replace seals
