9
AL
C UIM CB W
-4
/W
-5_
22
www.austlift.com.au
USER INS
TRUC
TION MANU
AL
CHAIN BL
OCK
W
-4 & W
-5 SERIES
Maintenance
1. Clean off the dirt on the chain block after use and store it in a dry place
to keep it from getting rusty and corrosive.
2. Clean the parts with kerosene and smear the gears and bearings with
grease once a year by a competent person.
3. Align the o marks of the two gears While assembling as shown In
Section View.
4. The rollers of the chain sprocket bearing may be stuck with grease to
the journal of the chain sprocket before fitting them Into the outer
race of the bearing on the side plate.
5. While assembling the brake mechanism care should be taken to
mesh the slanting teeth of the ratchet disc and the pawl. Make sure
that the pawl is controlled by the spring sensitively and reliably. Then
turn the hand wheel clockwise after screwing it onto the driving shaft
and it must press the disc and the plates on the brake seat turning it
counter clockwise there should be clearances between the disc and
the plates.
6. Transition fit is applied to the stay and the right side plate. Don’t
dismantle them or they will get loose.
7. Never allow any unqualified person to disassemble the block. Blocks
shall be serviced and tested by a qualified person.
8. After cleaning and repairing the block should be subjected to no-load
test and heavy load test. A chain block can be put into operation after
it has been tested and found in good condition.
9. Keep clean the friction surfaces of the brake while lubricating or
operating the block. Brake mechanism should be inspected regularly
