Stenhoj MAJOR 7000, Operation And Maintenance Instructions

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T61741
Revision:
21
STENHØJ MAJOR
SERVICE
High pressure cylinder replacement - main lift
To be carried out by trained personnel. Please contact your dealer.
a. Raise the lift to the appropriate working height and allow the safety ratchets to engage.
b. Remove cables from yoke.
c. Remove lock nut and screw off yoke. If the piston rod is seized in the yoke, protect the rod surface with
either rubber or fibre before using a pipe wrench.
d. Remove pipe connection to the cylinder, push the piston rod in until the thread reaches the stuffing box
and remove the clip holding the cylinder to the platform.
e. Fit the new cylinder in the reverse order as above.
f.
Raise the lift to the top and lower again to the floor to vent the new cylinder.
g. Test the lift under load and check pipe connections and stuffing box for possible oil leaks.
Replacement of packings in high pressure cylinder
To be carried out by trained personnel. Please contact your dealer.
Spare parts kit
Spare parts kit for the cylinder contains above mentioned seals:
792401 (Spare parts kit)
Spare parts
In order to ensure correct spare parts deliveries please state part number, designation, and quantity (to be
seen from spare parts list included in delivery) as well as lift serial number and year of production (to be
seen from serial number plate).
EMERGENCY LOWERING
(in case of power cut-out) (not single phase lifts)
Turn mains on 0-position.
By means of a jack raise one corner of the cross beam 3-4 mm. Pull out the ratchet and block it with a piece
of band. Repeat this in the 3 other corners.
Remove cover of pump unit.
Open carefully emergency lowering valve and lower lift carefully to bottom position. Close emergency
lowering valve again and re-fit cover.