Fiat Kobelco EX355 Tier2, Техническое руководство

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EX355 W4-2-21
CYLINDERS
SM1367
15
75298623
SM1365
Assemble Bucket and Boom Cylinder
1. Install bushing ( 5 ) to cylinder head ( 7 ) using a
press.
Special tools for bushing installation:
(BEH bucket and boom): Ø 105 mm (
75301655 )
(Standard bucket): Ø 95 mm ( 75301682 )
IMPORTANT - Be sure that the rings are installed
correctly.
2. Install U-ring ( 3 ), backup ring ( 2 ), snap ring ( 6 ),
and buffer ring ( 4 ) to cylinder head ( 7 ).
3. Install wiper ring ( 1 ) to cylinder head ( 7 ) using a
plastic hammer.
Special tools for wiper ring installing:
(BEH bucket and boom): (
75301671 )
(Standard bucket): ( 75301533 )
4. Install O-rings ( 10 ) and backup ring ( 9 ) to cylinder
head ( 7 ).
5. Install O-ring ( 18 ), backup ring ( 16 ) (2 used), seal
ring ( 17 ), slide ring ( 19 ) (2 used), ( 20 ) (2 used) to
piston ( 15 ).
Special tools for seals assembly:
(BEH bucket and boom): (
75299006 )
(Standard bucket): ( 75301170 )
6. Install cylinder head ( 7 ) to cylinder rod ( 11 ).
Special tools:
(BEH bucket and boom): (
75301674 )
(Standard bucket): ( 75301675 )
IMPORTANT - Be sure that the cushion seal slit
faces toward the piston and that the cushion bearing
oil groove faces the correct direction.
7. Install cushion bearing ( 13 ) to cylinder rod ( 11 ).
(For boom cylinder only, install cushion seal ( 14 ).)
Install piston ( 15 ) to cylinder rod ( 11 ).
8. Install shim ( 21 ) to cylinder rod ( 11 ). Tighten nut
( 24 ) using special tool ( 75298623 ).
Be sure to align the machine mark on the rod with
that on the nut.
Nut (
24 ) Turning Special Tools:
(BEH bucket and boom): 115 mm ( 75297549 )
(Standard bucket): 110 mm ( 75298684 )
: 8 800 N m (897 kgf m, 6 490 lbf ft)
(BEH bucket and boom)
: 11 700 N m (1 190 kgf m, 8 629 lbf ft)
(Standard bucket)
9. Align the holes on cylinder rod ( 11 ) and nut ( 24 ).
Insert steel ball ( 23 ) into the hole, and tighten set
screw ( 22 ) into the hole.
Mushroom the head of set screw ( 22 ) at two
places using a punch and hammer.
: 6 mm
: 56.9±10.7 N m
(5.8±1.09 kgf m, 42±7.9 lbf ft)
IMPORTANT - Be sure to align cylinder rod ( 11 ) with
the center of cylinder tube ( 12 ) when inserting, in
order to avoid damaging the rings.
10. Secure cylinder tube ( 12 ) horizontally using a
work bench. Insert cylinder rod ( 11 ) into cylinder
tube ( 12 ).
11. Install cylinder head ( 7 ) to cylinder tube ( 12 ).
Tighten socket bolts ( 8 ).
: 17 mm
: 520 N m (53 kgf m, 384 lbf ft)