76
76
(3) Make the fork down to the ground and tilt backward fully. Adjust the adjusting nut
(3) Make the fork down to the ground and tilt backward fully. Adjust the adjusting nut
for the end nipple of
for the end nipple of the upper chain and make the two chain’s tightness equal.
the upper chain and make the two chain’s tightness equal.
7.2.3 Replace rollers of the lift bracket
7.2.3 Replace rollers of the lift bracket
(1) Place a pallet on the
(1) Place a pallet on the forks and let the truck parking on
forks and let the truck parking on the horizontal ground.
the horizontal ground.
(2) Make the forks and
(2) Make the forks and the pallet down to the ground.
the pallet down to the ground.
(3) Disassemble the end nipple of the upper chain and take the chain down from the
(3) Disassemble the end nipple of the upper chain and take the chain down from the
sheave.
sheave.
(4) Lift the inner mast (See Fig 7.5
(4) Lift the inner mast (See Fig 7.5
①
①
).
).
(5) Make the truck back-up if the lift bracket is fully separated from the outer mast.
(5) Make the truck back-up if the lift bracket is fully separated from the outer mast.
(See Fig. 7.5
(See Fig. 7.5
②
②
))
(6) Replace the main rollers
(6) Replace the main rollers
··
Disassemble all the snap rings and take out the main rollers with a drawing tool
Disassemble all the snap rings and take out the main rollers with a drawing tool
except the adjusting shims.
except the adjusting shims.
··
Ensure the new rollers have the same types as the replaced rollers. Install the new
Ensure the new rollers have the same types as the replaced rollers. Install the new
rollers inside the lift bracket and
rollers inside the lift bracket and fasten them with snap rings.
fasten them with snap rings.
7.2.4 Replace rollers (Fig7.6)
7.2.4 Replace rollers (Fig7.6)
(1) Use the same way as
(1) Use the same way as 7.2.3 to disassemble the lift bracket f
7.2.3 to disassemble the lift bracket from the inner mast.
rom the inner mast.
(2) Let the truck parking on the horizontal ground and wedge up the front wheels for
(2) Let the truck parking on the horizontal ground and wedge up the front wheels for
250mm to 300mm.
250mm to 300mm.
(3) Apply the parking brake and wedge up the rear wheels.
(3) Apply the parking brake and wedge up the rear wheels.
(4) Disassemble the bolts which fasten the lift cylinder and the inner mast. Hang up
(4) Disassemble the bolts which fasten the lift cylinder and the inner mast. Hang up
the inner mast not to loose the shims of the piston rod heads.
the inner mast not to loose the shims of the piston rod heads.
(5) Disassemble the connecting bolts for the lift cylinder and the bottom of the outer
(5) Disassemble the connecting bolts for the lift cylinder and the bottom of the outer
mast. Disassemble the lift cylinders and the oil pipes between the two cylinders without
mast. Disassemble the lift cylinders and the oil pipes between the two cylinders without
loosen the oil pipe joints.
loosen the oil pipe joints.
(6) Main rollers on the upper outer mast will be showed on the top of the inner mast
(6) Main rollers on the upper outer mast will be showed on the top of the inner mast
as soon as main rollers were taken apart from bottom of the inner mast after laying down
as soon as main rollers were taken apart from bottom of the inner mast after laying down
the inner mast.
the inner mast.
(7) Replace the main rollers.
(7) Replace the main rollers.
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