SANY Crawler Hydraulic Excavator SY215CLC (CUMMINS QSB6.7 engine). Shop Manual

Disassembly and Assembly

SY215C

8-36

4. No.1 planetary carrier assembly

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

the plate (4).

2) Disassemble the carrier assembly.

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

5. Ring gear

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

ZX215-1006073

ZX215-1006074

ZX215-1006075

Disassembly and Assembly

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8-37

6. No. 2 sun gear

Remove No. 2 sun gear (11).

7. No.2 planetary carrier assembly

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

ZX215-1006076

ZX215-1006077

Disassembly and Assembly

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8-38

2) Disassemble No. 2 carrier assembly as

per the following procedure.

i) Insert pin (13) and push the shaft

(14) out of the carrier assembly (19).

★

Pull out the pin (13) after removal of
the shaft.

ii) Remove the thrust washer (16),

gear (17) and a second thrust
washer (19).

iii) Insert the pin (15) to remove the

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

8. Snap ring

Remove the snap ring (20).

9. Disassembly of main shaft

1) Place the shaft housing assembly on a

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

ZX215-1006078

ZX215-1006079

压出

ZX215-1006080

Disassembly and Assembly

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8-39

2) 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).

压出

ZX215-1006081

ZX215-1006082

Disassembly and Assembly

SY215C

8-40

8.8.2 Assembly

★

Clean all the parts and check for any
contamination or damage. Apply engine oil
to the sliding surface 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 installation surface:

Gasket sealant (Loctite 515)

3. Housing assembly

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

2) Position the housing assembly (22) on

the shaft (24). Press in the bearing.

ZX215-1006083

ZX215-1006084

ZX215-1006085

Disassembly and Assembly

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8-41

4. Bearing

Press in 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

1) Reassemble No. 2 carrier assembly ac-

cording to the following procedure.

i) Assemble the plate (16) in the car-

rier assembly (19).

ii) Assemble the gear (17) in the car-

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

iii) Push the shaft assembly into the

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

★

Installation of the shaft requires ro-
tating the planetary gear. Be careful
not to damage the thrust washer.

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ZX215-1006078

Disassembly and Assembly

SY215C

8-42

6. Assemble in turn the snap ring (20),

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

7. Installation of ring gear

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

Mating surface:

Sealant (Loctite 515)

8. No. 1 planetary carrier assembly

1) No. 1 carrier assembly is assembled as

per the following procedure.

i) Install the plate (7) into the carrier

assembly (5).

ii) Install the gear (6) onto the plate af-

ter installing the bearing (9) into the
gear.

iii) 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.

ZX215-1006088

No.2 planetary carrier

ZX215-1006087

ZX215-1006074

Disassembly and Assembly

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8-43

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

the plate (4).

9. No. 1 sun gear assembly

Install No. 1 sun gear (2).

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ZX215-1006072

Disassembly and Assembly

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8-44

10. Installation of swing motor assembly

Apply sealant to the contact surfaces of the
ring gear and the motor cover, and install
the swing motor assembly.

Contact surface:

Sealant (Loctite 515)

Swing motor assembly: 62 kg

Mounting bolts (swing motor):

156±5 N·m {16±0.5 kg}

★

The 14 bolt holes of the swing motor
and swing drive assembly are distrib-
uted nonuniformly. The mating direction
of each hole is fixed, as shown in the
illustration on the right. The installa-
tion of swing motor requires proper
alignment of the bolt holes in order to
ensure the installation orientation.

11. Lubricant adding

Screw on the drain plug and add lubricant
through the

ller to the speci

ed level (the

upper mark of oil stick).

Swing drive: approx. 4 L

ZX215-1006089

Disassembly and Assembly

SY215C

8-45

8.9 Idler AS - Disassemble and Assemble

8.9.1 Disassembly

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

(2).

2. Remove the

oat 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
assembly (7).

★

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

oor to prevent smearing the

oor with

oil.

4. Remove the float 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).

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ZX215-1006091

ZX215-1006092

9 10

Disassembly and Assembly

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8.9.2 Assembly

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

(4).

2. Assemble the O-ring. Install the support (7)

to the shaft (5) with the dowel pin (8).

3. Install the float seals (6) to the idler (4),

shaft (5) and support (7) assembly.

★

Float seals

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

oat seal before installing the

oat seal.

In addition, care must be taken to keep
the contact surface of float seal free
from dust.

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ZX215-1006094

ZX215-1006092

9 10

Disassembly and Assembly

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8-47

★

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

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

sembly to the idler (4).

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ZX215-1006096

Disassembly and Assembly

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8-48

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

and support (2).

★

Apply oil to the sliding surface of float
seal. Care must be taken to keep the
sliding surface from any contaminants
or dust.

★

Remove the oil and dust from the
contact surfaces of the O-ring and

oat

seal.

6. Install the O-ring. Install the support (2)

with the dowel pin (1).

7. Add oil and screw on the plug.

Oil: approx.

80 ml (No.18 hyperbola gear oil)

Plug:

205.8±49 N·m {21±5 kgf·m}

ZX215-1006097

ZX215-1006098

ZX215-1006090

Disassembly and Assembly

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8-49

8.10

Sprocket - Remove and Install

8.10.1 Removal

1. Remove the track assembly. Refer to “Track

AS - Remove and Install” on page 8-50.

2. Swing the work equipment 90°and lift the

chassis with the work equipment. Place a
block

①

between the track frame and the

track shoe.

3. Remove the sprocket (1).

Sprocket: 58 kg

8.10.2 Installation

●

Installation is to be performed in the re-
verse order of removal.

Threads (bolt - sprocket):

Thread sealant (Kesaixin 1277)

Bolts (sprocket):

339±20 N·m {35±2 kgf·m}

ZX215-1006099

Disassembly and Assembly

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8-50

8.11

Track AS - Remove and Install

8.11.1 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.

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.

Special tools

Mark

Part Name

Necessity

Qty

Manual/electric hydraulic
track removing/installing
machine

●

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

(M).

ZX215T-1006100

ZX215-1006101

Disassembly and Assembly

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8-51

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).

ZX215-1006102

SANY Crawler Hydraulic Excavator SY215CLC (CUMMINS QSB6.7 engine). Shop Manual - page 33