SANY Crawler Hydraulic Excavator SY365H-9, SY365BH-9. Shop Manual (2014)

8-45

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

4. No.1 planetary carrier assembly

A. Remove No.1 carrier assembly (3) and

the plate (4).

B. Disassemble No.1 carrier assembly.

Cut the rivets on the shaft (8) to re-
move the shaft (8), and remove in turn
the gear (6), bearing (9) and plate (7).

5. Gear ring

Unscrew the mounting bolts to remove the
gear ring (10).

Fig. 8-78

ZX335-1006068

ZX335-1006069

ZX335-1006070

Fig. 8-79

Fig. 8-80

8-46

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1006071

ZX335-1006072

6. No.2 sun gear

Remove No.2 sun gear (11).

7. No.2 planetary carrier assembly

A. Remove No.2 carrier assembly (12).

Fig. 8-81

Fig. 8-82

8-47

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1006074

8. Snap ring

Remove the snap ring (20).

9. Disassembling the main shaft

A. Place the shaft housing assembly on a

press and push the shaft assembly (21)
out of the shaft housing assembly (22).

B. Disassemble No.2 carrier assembly

with hands through the following steps.

a. Hammer the pin (13) in the shaft (14)

in order to push the shaft (14) out of
the carrier assembly (19).

●

Hammer out the pin (13) after removing
the shaft.

b. Remove the thrust washer (16) and

gear (17).

c. Insert the pin (15) to remove the

bearing (18) from the shaft. Remove
the pin (15).

ZX335-1006073

Fig. 8-83

Fig. 8-84

Push

ZX335-1006075

Fig. 8-85

8-48

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1006077

B. Disassemble the shaft assembly in the

following procedure.

Remove the bearing (23) from the shaft
(24).

10. Bearing

Remove the bearing (25) and the oil seal
(26) from the housing (27).

Push

ZX335-1006076

Fig. 8-86

Fig. 8-87

8-49

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

8.13.2 Assembly

●

Clean all the parts and check for any con-
tamination or damage. Apply engine oil to
the sliding surfaces of the parts.

1. Bearing

Press the bearing (23) into the housing (27).

2. Oil seal

Press the oil seal (26) into the housing (27).

Oil seal mounting surface: gasket

sealant (Loctite 515)

3. Housing assembly

A. Position the plate (28) on the shaft (24).

B. Position the housing assembly (22) on

the shaft (24). Press to

t the bearing.

Fig. 8-88

Fig. 8-89

Fig. 8-90

ZX335-1006078

ZX335-1006079

ZX335-1006080

8-50

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1006081

4. Bearing

Press to

t the bearing (25).

●

When press-fitting the bearing, press
the bearing inner race and outer race
simultaneously. Never press only the
inner race.

●

After assembling the bearing, check if
the housing rotates freely.

5. No.2 Planetary carrier assembly

Reassemble No.2 carrier assembly through
the following steps.

A. Assemble the plate (16) in the carrier

assembly (19).

B. Assemble the gear (17) in the carrier

assembly (19). Put the bearing (18)
on the shaft (14). Slightly tap the pin
(15) into the bore after alignment. Use
a rubber hammer to tap the pin. Make
sure that the pin (15) must not be
higher than the bearing (18).

C. Push the shaft assembly into the car-

rier assembly (19). Be careful not to
damage the gear and the plate. Align
the pin hole of the shaft with that of the
carrier assembly, and install the pin
(13). Carefully tap the pin with a rubber
hammer during installation.

●

Installation of the shaft requires rotat-
ing the planetary gear. Take care not to
damage the thrust washer.

ZX335-1006073

Fig. 8-91

Fig. 8-92

8-51

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

6. Assemble in turn the snap ring (20), No.2

carrier assembly and No.2 sun gear (11).

7. Installation of gear ring

Apply sealant on the mating surface
indicated by (C) and tighten it with screws.
Never get the sealant onto the gear ring
(10).

Mating surface: Sealant (Loctite 515)

8. No.1 planetary carrier assembly

A. No.1 carrier assembly is assembled as

the following.

a. Install the plate (7) on the carrier

assembly (5).

b. Install the gear (6) onto the plate

after installing the bearing (9) into
the gear.

c. Press the shaft (8) into the gear (6)

and the carrier assembly (5). Rivet
one end of the shaft.

●

Check if the gear rotates freely.

No.2 planetary
carrier

ZX335-1006082

Fig. 8-93

Fig. 8-94

Fig. 8-95

ZX335-1006083

ZX335-1006069

8-52

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

B. Install No.1 carrier assembly (3) and

the plate (4).

9. No.1 sun gear assembly

Install No.1 sun gear (2).

ZX335-1006068

ZX335-1006067

Fig. 8-96

Fig. 8-97

8-53

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

10. Installation of swing motor assembly

Install the swing motor assembly after ap-
plying sealant to the mating surfaces of the
gear ring and the motor cover.

Mating surface: sealant (Loctite

515)

Swing motor assembly: 55 kg

Mounting bolts (swing motor):

156

5 Nm {16

0.5 kg}

●

The 14 bolt holes of the swing motor
and swing drive assembly are distribut-
ed nonuniform. The mating direction of
each hole is exclusive, as shown in the
illustration on the right. The installation
of swing motor requires proper align-
ment of the bolt holes in order to ensure
the installation orientation.

11. Re

lling of lubricant

Screw on the drain plug and re

ll lubricant

through the

ller to the speci

ed level (the

upper mark of oil stick).

Swing drive case: About 4 L

ZX335-1006084

Fig. 8-98

8-54

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1006085

ZX335-1006086

9 10

ZX335-1006087

8.14 Idler AS

8.14.1 Disassembly

1. Remove the dowel pin (1) and the support

(2).

2. Remove the floating seals (3) from the

support (2) and the idler (4).

3. Remove the O-ring (11). Remove the idler

(4) from the shaft (5) and the support as-
sembly (7).

●

The idler contains 80 ml oil, which
should be drained completely before
disassembling. Spread a cloth on the

oor to prevent smearing of the

oor by

the oil.

4. Remove the

oating seals (6) on the other

side from the idler (4), shaft (5) and sup-
port assembly (7).

5. Remove the dowel pin (8) in order to

remove the support (7) from the shaft (5).

6. Remove the bushings (9) and (10) from the

idler (4).

Fig. 8-99

Fig. 8-100

Fig. 8-101

8-55

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1006088

910

ZX335-1006087

8.14.2 Assembly

1. Install the bushings (9) and (10) in the idler

(4).

2. Assemble the O-ring. Use the dowel pin (8)

to install the support (7) on the shaft (5).

3. Install the

oating seals (6) on the idler (4),

shaft (5) and support (7) assembly.

●

Floating seals

Completely remove the grease from
the contact surfaces (hatched area in
the illustration on the right) of O-ring
and floating seal before installing the

oating seal. In addition, care must be

taken to keep the contact surface of

oating seal free from dust.

Fig. 8-102

Fig. 8-103

Fig. 8-104

ZX335-1006089

8-56

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1006091

●

After installation of the floating seals,
check that the sealing inclination should
be less than 1 mm and the seal protru-
sion be within a range of 5-7 mm.

4. Install the shaft (5) and support (7) assem-

bly to the idler (4).

Fig. 8-105

ZX335-1006090

Fig. 8-106

8-57

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1006085

6. Install the O-ring. Use the dowel pin (1) to

install the support (2).

7. Re

ll oil and screw on the plug.

Oil: About 80 ml (No.18 hyperbola

gear oil)

Plug: 205.8

49 Nm {21

5 kgm}

ZX335-1006093

Fig. 8-107

5. Install the floating seal (3) to the idler (4)

and support (2).

●

Apply oil to the sliding surface of

oat-

ing seal. Care must be taken to keep
the sliding surface from any contami-
nants or dust.

●

Remove the oil and dust from the con-
tact surfaces of the O-ring and

oating

seal.

ZX335-1006092

Fig. 8-108

Fig. 8-109

8-58

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1006094

8.15 Sprocket

8.15.1 Removal

1. Remove the track assembly. For more

information see

“Track AS” on page 8-59

2. Swing the work equipment 90

and lift the

chassis with the help of the work equip-
ment. Place a block

①

between the track

frame and the track shoe.

3. Remove the sprocket (1).

Sprocket: 98.4 kg

8.15.2 Installation

●

Installation is performed in the reverse pro-
cedure of removal.

Threads (bolt - sprocket):

Thread sealant (Kesaixin 1277).

Bolts (sprocket):

927

103 N·m {94.6

10.5 kgf·m}

Fig. 8-110

8-59

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1006096

ZXT335-1006095

8.16 Track AS

Special tools

Mark

Part Name

Necessity Qty

Manual/electric hydraulic
track removing/installing
machine

●

8.16.1 Removal

1. Choose a place that has enough space to

spread the track. Park the machine when
the master pin is between the idler and the
carrier roller.

2. Lower the work equipment. Loosen the

grease

tting (1) and release the track ten-

sion.

3. Pull out the master pin (2) with the tool (M).

WARNING

●

The adjustment cylinder is under ex-
tremely high pressure. Never loosen the
grease fitting by more than one turn.
Move the machine back and forth if no
grease is seen.

Fig. 8-111

Fig. 8-112

8-60

Disassembly and Assembly

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1006097

ZX335-1006098

Corner

Track shoe nut
(Square)

Seat surface
Must be in
Close contact.

4. Remove the tool (M). Move the machine

forward so that the temporary pin

②

is in

front of the idler. Place the block

①

5. Remove the temporary pin

②

and the

dust seal. Move the machine backward to
spread the track (3).

8.16.2 Installation

●

Installation is performed in the reverse pro-
cedure of removal.

See

“Track Tensioner - Test and Adjust” on

page 6-21

●

Installation procedure of track shoe bolts
and nuts

A. Bring the R side of the track shoe nut

(1) to the link seat surface. Both seat
surfaces should be in close contact
when assembling the track shoe.

●

If the track shoe bolts are installed
from the other side, the corner of nut
will interfere with the link seat surface,
causing the nut to raise and the bolt to
loosen.

B. Tighten the bolts of track shoe to the

torque below.

Track shoe bolts:

1029

60 Nm {105

6 kgm}

Fig. 8-113

Fig. 8-114

SANY Crawler Hydraulic Excavator SY365H-9, SY365BH-9. Shop Manual (2014) - page 32