SANY Excavator SY335 (Part Number: 11282013). Safety, Operation & Maintenance Manual

Daily Maintenance

SY335 Excavator

•

Windshield wiper and washer (5)

Fig. 5-10

Fire Extinguisher and Escape Tool

Check to be sure the fire extinguisher (1) is installed on the

machine and in proper working order. Follow the

instructions on the extinguisher to test the operation and

condition.

Check to be sure the escape tool (2) is installed on the

machine.

NOTE: See “Extinguisher and First Aid Kit” on

page 2-14.

Fig. 5-11

Typical

Backup Camera

Check and ensure that the backup camera is operational and

that the camera (1) itself is free of all obstructions and

debris.

NOTE: See

“Backup Camera” on page 4-22 for

additional information.

Fig. 5-12

5-18

Daily Maintenance

SY335 Excavator

Pump Mounting Bolts

1. Locate and inspect the Hydraulic Pump (a) for loose,

broken or missing pump mounting bolts (b), and leaks or

cracking at these mounting bolt locations.

Fig. 5-13

NOTE: Not all pump mounting bolts are shown here.

Be sure to inspect all pump mounting bolt

locations.

2. Use the following table when tightening these bolts.

Bolt Type

Torque Value

Pump Mounting Bolt (M10×35)

36 ft•lb (49 N•m)

10.9

Fig. 5-14

NOTE: Contact your Sany distributor if any

abnormality is found.

NOTICE

Do not overtighten the mounting bolts. Failure to observe and follow this directive may result

in damage to the bolts, the mounting brackets or the engine case.

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SY335 Excavator

Daily Maintenance

Fuel Level

NOTE: To check the Fuel Level See “Fuel Level” on page 4-13, see also “Fluids & Lubricants” on page 5-11.

Engine Coolant Level

Cummins^® engine cooling system general recommendations are listed below. These recommendations apply to

both standard service intervals and extended service intervals. For an engine using standard service interval

coolant, the additive and glycol levels must be tested every 6 months.

Standard Maintenance

•

A small amount of coolant can leak when servicing the coolant filter (if equipped) with the shutoff valve in the

OFF position. Avoid contact with hot coolant to reduce the possibility of personal injury. Always allow

sufficient time for the engine to cool down to outdoor temperatures before servicing the cooling system.

WARNING

Coolant is toxic. Keep it away from children and pets.

NOTICE

If not re-used, dispose of the coolant in accordance with local environmental regulations.

Failure to do so may result in fines or punishment.

•

Fill up and top off cooling systems using a fully formulated coolant which meets Cummins®^® Engineering

Standard 14603. Replace the coolant filter(s) at every recommended coolant filter change interval.

CAUTION

Do not remove the filler cap while the engine is hot. Engine coolant is under pressure when

hot and will spurt out. Always wait for the engine to cool to outdoor ambient temperatures

before removing the filler cap. Failure to follow this warning could result in minor or major

injuries.

NOTE: See “Engine Coolant Level” on page 4-19 for information on checking the Engine Coolant Level, see

also “Fluids & Lubricants” on page 5-11 for further information on coolant type.

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SY335 Excavator

Daily Maintenance

Compare the information here with the actual belt.

a. Abrasion: The belt appears shiny, glazed or fabric

is exposed. This is a sign that the belt is in contact

with an object such as a flange or bolt.

b. Chunk-out: Chunks of rubber material have

broken off from the belt. At this stage, the belt can

fail at any moment. Heat, age and stress are the

primary contributors.

c. Pulling: Belt material is sheared off from the ribs.

Lack of tension, misalignment, worn pulleys or a

combination of these are factors.

d. Uneven rib wear: Belt shows damage to the side

with the possibility of breaks in the tensile cord or

jagged-edged ribs. A thumping/grinding noise may

also be heard when running.

Fig. 5-17

e. Improper installation: A belt rib begins

separating from the strands. If left unattended, the

cover will often separate, causing the belt to

unravel.

f. Cracking: Small visible cracks along the length of a rib or ribs. With continuous exposure to high

temperatures, the stress of bending around the pulley leads to cracking.

g. Misalignment: Sidewalls of the belt may appear glazed or the edge-cord may become frayed. A

noticeable noise may result.

h. Gravel penetration: Small pinholes are visible on the backside of the belt. Bumps may be visible and

fabric around the holes can be frayed, indicating damage from foreign objects such as dirt, gravel or

similar debris.

Replace all damaged belts.

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Daily Maintenance

SY335 Excavator

Slewing Gearbox

1. Locate and inspect the slewing gearbox (a) for physical

damage of any kind. Contact your Sany representative

for further advice if any damage is found.

Fig. 5-18

2. Remove the dipstick (b) from the slewing gearbox and

note the oil level on the dipstick.

Fig. 5-19

3. The oil level should be within the etched area (c) on the

dip stick surface.

Fig. 5-20

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SY335 Excavator

Daily Maintenance

4. If necessary, remove the oil filler cap (d), add oil as

needed, then reinstall the cap. See

“Fluids &

Lubricants” on page 5-11

Fig. 5-21

Hydraulic Oil Tank

CAUTION

Hydraulic oil is hot and under pressure. Always wait for the machine to cool down to below

160°F (71°C) before attempting to maintain the hydraulic oil system. Failure to do so could

result in minor or major injuries.

1. Open the right rear access panel to access the hydraulic

oil tank (a), then check it for leaks, exterior rust and

other damage.

Fig. 5-22

2. Check the oil level (b) via the sight glass on the side of

tank. Insure that the oil level is between the level marks

on the sight glass.

NOTE: See

“Hydraulic Oil/Ambient Temperature

Data” on page 5-13 for proper hydraulic oil.

NOTE: Do not add hydraulic oil to the tank if the

instrument display shows a reading higher

than 160°F (71°C)

Fig. 5-23

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Daily Maintenance

SY335 Excavator

3. If necessary, remove the filler cover

hydraulic oil to the system until the hydraulic oil level is

between the level marks on the sight glass (b).

4. Check and tighten the various hydraulic fittings and/or

replace any that are defective, especially if the hydraulic

oil level has noticeably dropped since the previous level

check.

Hydraulic Line Connections

Fig. 5-24

1. Open the right rear access panel (a).

Fig. 5-25

2. Examine the hoses (b) between the tank and the hydraulic

pump for leaks, breaks or loose connections.

Fig. 5-26

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SY335 Excavator

Daily Maintenance

3. Check fittings (c) at both ends of the flexible hose every

day. Be sure to inspect all bolt locations.

NOTE: These bolts/screws at each end of this hose may

loosen occasionally due to vibration. Leaks at

the angled seals will eventually result in pump

failure.

4. Replace any damaged or defective bolts and retighten

any loose bolts.

Bolt Diameter (Grade)

Torque Value

M16 (8.8

86-106 ft•lb (116-144 N•m)

NOTE: Do NOT use thread sealant when reinstalling

loose bolts and installing new bolts.

Fig. 5-27

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Daily Maintenance

SY335 Excavator

Electrical System

The electrical system should be inspected starting with the

box. The fuse box (a) is located at the left rear of operator's

seat. If a fuse is corroded or if a white powder can be seen on it,

contact your Sany distributor for repair information regarding

the electrical circuit in question.

Fuse location, circuit & amperage

F2. Cab Lamp, 2A

F1. Horn, 5A

F4. Display, 10A

F3. Ignition circuit, 20A

F6. ECM, 30A

F5. 12V power supply, 10A

F8. Connector, 10A

F7. 24V power supply, 10A

F10. Dome lamp, 10A

F9. Boom light, 10A

F12. Air conditioner, 20A

F11. HCU controller, 15A

F14. Battery charge, 15A

F13. Radio, 3A

Fig. 5-28

F16. Travel alarm, 2A

F15. Windshield washer, 2A

F18. Windshield Wiper, 10A

F17. Pilot Control, 10A

F20. Rear camera, 5A

F19. Emergency stop, 5A

NOTICE

Before replacing a fuse, make sure that the start switch is in OFF position and the battery is

disconnected. Fuses should be replaced if it is eroded, produces white powder or becomes

loose in the fuse panel. Always replace a fuse with one of the same capacity, never replace a

fuse with one of a higher capacity. Doing this may cause the machine to catch on fire.

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SY335 Excavator

Daily Maintenance

Electrical power disconnect process

1. Locate and unlock the battery compartment access panel (a) on the right front side of the machine.

Fig. 5-29

2. Open the battery compartment access panel to view the

batteries

(b).To disconnect power from the machine

remove the black (ground) cable (c) from the battery

post first, then remove the red (power) cable (d) from

the battery post second.

WARNING

When working with any open electrical power

source ensure that your hands are free of any

Fig. 5-30

metal objects

(rings, watches, jewelry) that

could come in contact with electrical power

points. Failure to do so could cause personal

injury or electrical shock.

3. To reconnect power, reverse the process shown in step 2 insuring that the red cable is connected first followed by

the black cable.

Other electrical inspection points:

•

Inspect all electrical equipment and circuitry regularly; if necessary, remove and replace all faulty items,

including loose connectors, worn or degraded wiring, cables, etc.

•

Locate and remove the cause of any electrical faults.

•

Use only genuine spare parts and fuses as specified here.

•

Shut off the machine immediately if a fault occurs with the power supply.

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SY335 Excavator

Daily Maintenance

2. Press the air conditioning fan switch (b) inside the cab

to check startup, air flow and fan speed control.

NOTE: To change temperature display from C° to F°

(or vice versa) press and hold the temperature

up/down arrows at the same time.

Fig. 5-32

3. Go to the air conditioner compressor which is located

under the left engine hood (c).

Fig. 5-33

NOTE: The a/c compressor (d) is located above the

engine next to the exhaust pipe.

Fig. 5-34

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SY335 Excavator

Daily Maintenance

Drain

Draining the Primary Fuel Filter

DANGER

Never service the fuel system near an open flame or while smoking. Doing so could result in

fire, explosion, serious injury or death.

NOTE: See “Draining Primary Fuel Filter” on page 4-14 for information on how to drain the Primary Fuel

Filter. If an excessive amount of water or contaminant was found while draining the primary fuel

filter, Sany recommends that the fuel tank should be drained.

1. Place a large enough container(137 gal/ 520 L) to hold

the drained fuel under the drain valve (c) located below

the hydraulic pilot line filter against the wall.

NOTE: See “Fluids & Lubricants” on page 5-11 for

additional information.

Fig. 5-40

Rotate and move the drain valve (d) counterclockwise

to open it.

3. Rotate the drain valve (d) clockwise when the flow

from the tank bottom is free of water or contaminant.

Fig. 5-41

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SY335 Excavator

50 Hours of Maintenance

50 HOURS OF MAINTENANCE

NOTICE

Failure to perform the following procedures when and how directed will result in shortened

service life of the machine or a system failure during operation.

1. Park the machine on a level flat surface (a).

Fig. 5-42

2. Follow the Lock-out Tag-out procedure in the Safety

section of this manual. Always allow the systems time to

cool down before proceeding with any service. See

“Lockout/Tagout Procedures” on page 2-21 for details.

NOTE: Obtain the maintenance record for this machine

and complete it at the close of all maintenance

procedures.

3. With the machine secured, proceed with the following:

Change:

•

Engine Oil and Filter - Initial (see page 5-38)

Check:

•

Slewing Gearbox Oil Level (see page 5-24)

•

Air Intake System (see page 5-42)

•

Muffler and Exhaust System (see page 5-43)

Fig. 5-43

•

Hydraulic Hoses (see page 5-44)

•

Batteries (see page 5-45)

•

Crawler Shoe Connecting Pins (see page 5-48)

5-37

50 Hours of Maintenance

SY335 Excavator

•

Crawler Support Roller Mounting Bolts (see page 5-48)

•

Crawler Gearbox Oil Level (see page 5-49)

•

Crawler Drive Sprocket Mounting Bolts (see page 5-50)

•

Track Tension - Initial (see page 5-51)

Lubricate:

•

Slewing Bearing (see page 5-54)

Change

Engine Oil and Filter - Initial

WARNING

Do not perform this task when the engine is hot. Wait for the temperature to cool down before

doing this job. Failure to do so may cause burns or other serious injury.

1. Remove the belly plate (a) under the engine compartment.

Fig. 5-44

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SY335 Excavator

50 Hours of Maintenance

2. Open engine cover (b).

Fig. 5-45

3. Remove the engine oil filler cap (c).

Fig. 5-46

4. Place a container (at least 6 gal/ 23 L) in size under the

drain valve (d).

5. Slowly open the valve to drain all of the oil.

6. Close the valve when all of the oil has drained from the

engine.

7. Replace the belly plate (a).

Fig. 5-47

NOTICE

Dispose of the contaminated oil properly. Failure to do so will violate environmental laws and

ordinances.

5-39

50 Hours of Maintenance

SY335 Excavator

8. Open the right rear access panel (c) and locate the engine oil filter (d).

Fig. 5-48

9. Turn the engine oil filter (e) to the left to remove the oil

filter.

10. Clean the engine oil filter mount (g).

NOTE: Check the mount for any of the previous seal.

If found remove this used seal to prevent oil

leakage when a new filter is mounted in place.

11. Clean the oil filter mounting surface, then coat the new

filter seal ring with a thin layer of engine oil.

12. Thread the filter into place on its mount until the filter

gasket contacts the filter mount, then tighten the filter

3/4 turn more.

Fig. 5-49

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SY335 Excavator

50 Hours of Maintenance

13. Check engine oil dipstick level (k).

Fig. 5-51

14. Replace oil until the oil level falls between the etched

marks (m).

Fig. 5-52

15. Replace engine oil through the fill point

(n). See

“Engine Oil Viscosity/Temperature Data” on page 5-

12.

16. After adding the required amount of oil to the engine,

start and run the engine at idle speed for a short time

Fig. 5-53

and check for leaks.

17. Shut the engine down, wait for several minutes, then

remove the dipstick from the engine and note the oil level on the dipstick.

NOTE: The oil level should be within the etched area (m) on the dip stick surface.

18. If necessary, remove the oil filler cap (n), add oil as needed, then reinstall the cap.

5-41

SY335 Excavator

50 Hours of Maintenance

3. Check the condition of the dust vacuator (c) and replace

if required.

NOTE: If the dust vacuator is cracked, torn, remains

open or is missing, dust particles that are

normally expelled can deposit themselves

onto the filter and will shorten air filter

service life.

Fig. 5-56

Typical

Muffler and Exhaust System

1. Open the engine compartment (a).

Fig. 5-57

2. Locate the muffler and exhaust pipe (b) next to the

engine.

Fig. 5-58

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50 Hours of Maintenance

SY335 Excavator

3. Inspect the muffler (c) and its mount for leaks or signs

of damage. Be sure the exhaust pipe is clear and not

restricted. Check the connection to the expansion pipe

to be sure there are no signs of leakage.

NOTE: If any abnormality is found, contact your Sany

distributor for repairs.

Fig. 5-59

CAUTION

Never operate a machine with a defective exhaust system. Exhaust leaks or a restricted or

damaged exhaust system could cause an unexpected fire leading to minor or major injury.

Hydraulic Hoses

Check all hoses regularly for possible leakage and replace

damaged or leaking hoses immediately, even if there is a

slightest damage.

Any hydraulic pump lines and connectors connected to the

engine chamber must be replaced if they are damaged due to

mechanical /thermal or other effects.

Ensure that there is a sufficient distance from all lines and

hoses to the high temperature engine components

(for

Fig. 5-60

instance, the exhaust system) and that there is no friction

between them.

Possible hose defects are as follows:

•

The couplings slip in the hose

•

Damage, cuts or abrasions in the external rubber layer

•

Hardening, chapping or burning of hose

•

Any cracks, damage or serious corrosion on the couplings

•

Any leakage at the hose couplings

5-44

SY335 Excavator

50 Hours of Maintenance

•

Any twisted, broken, flat or distorted hose

•

Blisters or softness in the external hose layer

Besides the defects listed above, also look for these signs of problems when doing the visual inspection:

•

Oil leakage at the oil orifice of the engine block.

•

Clogging by debris

NOTE: Repair or replace those items as described above.

Batteries

The batteries provide the power supply to start the engine, control electric apparatus, lighting and auxiliary electric

equipment.

CAUTION

Before proceeding with any battery maintenance procedure follow and remember these

points:

• Battery gases are explosive. Never smoke around batteries or expose them to sparks or

open flames.

• Wear personal protective equipment when working with batteries.

• Work in a well-ventilated area.

If battery acid contacts your skin or your eyes, flush the area immediately with fresh water and

seek medical attention.

5-45

50 Hours of Maintenance

SY335 Excavator

1. Locate, unlock and open the battery compartment access panel (a) on the right front side of the machine.

Fig. 5-61

NOTE: Allow several minutes for any accumulated

battery gases to clear before servicing the

batteries (b).

2. Check the top surfaces and all the battery connections

rag to wipe any dirt from the batteries. If corrosion is

found, flush the area with a mix of baking soda and

warm water.

3. Remove any trash, tools parts or debris from the battery

compartment.

Fig. 5-62

4. Once the battery service procedures are complete close

the battery compartment access panel.

5-46

SY335 Excavator

50 Hours of Maintenance

Replacement

1. Disconnect the black ground (-) battery cables first, then

disconnect the red positive (+) cables last and lift out the

failed battery.

2. Remove the battery retaining frame by disconnecting

the four nuts (a) at the corners of the frame and then lift

the frame out taking care not to come in contact with the

battery terminals.

3. Install the new battery (or batteries) inside the battery

compartment positioned correctly.

Fig. 5-63

4. Install the battery retaining frame following the

directions shown in step 1 in reverse.

5. Connect the red positive (+) cables first then the black ground (-) cables afterwards.

NOTE: Both 12-volt batteries are attached in series. Be sure they are installed in the same manner.

6. Torque the battery cable clamps to 7.2 lbf·ft (9.8 N·m).

NOTE: Dispose of the old batteries properly.

5-47

50 Hours of Maintenance

SY335 Excavator

Crawler Shoe Connecting Pins

1. Ensure that all retaining bolts (a) are properly in place

at each pair of crawler shoes (b) and not broken, bent or

damaged.

Fig. 5-64

2. If the bolts are loose, tighten them in sequence (c) to

440-500 lb ft (61-69 kgf) ensuring the nuts and track

shoe are in close contact with the link mating surface.

Fig. 5-65

Crawler Support Roller Mounting Bolts

1. Inspect the mounting bolts (a) that secure the support

rollers to the side frame for rust, damage or looseness.

2. Replace any damaged or defective bolts and tighten any

loose bolts.

Fig. 5-66

NOTE: Use thread sealant when reinstalling loose bolts and installing new bolts, tightening each of them to

the following values.

Item

Diameter

Torque Value

Thread Sealant

399 - 485 ft•lb

Mounting Bolt GB5782

M18x100

Anaerobic sealant

(540 - 658 N•m)

5-48

SY335 Excavator

50 Hours of Maintenance

Crawler Gearbox Oil Level

1. Park the crane on firm, level ground with the drain plug (a) positioned at the bottom.

Fig. 5-67

2. With the machine running, listen for abnormal noise from inside the crawler gearbox.

NOTE: Contact Sany if abnormal noise is heard.

3. Stop the machine, then remove the check plug (b) and visually check to be sure the oil level is within 0.4 in. (10

mm) of the bottom of the check plug hole.

4. If the oil level is low, add oil through the check plug hole (c) until the level is within 0.4 in. (10 mm) of the

bottom of the hole.

NOTE: See “Fluids & Lubricants” on page 5-11 for more information if needed.

NOTICE

Do not overfill the case or damage to the case seals may result.

5. Install and tighten the check plug to 50 ft•lb (68 N•m).

6. Check for external leakage.

5-49

50 Hours of Maintenance

SY335 Excavator

NOTICE

If oil leakage is found during the oil level inspection, stop the inspection, locate and repair

the cause of the oil leakage. Failure to do this may result in low oil level during operation and

component failure.

Crawler Drive Sprocket Mounting Bolts

1. Locate and remove the Crawler Drive Sprocket cover (a)

Fig. 5-68

2. Inspect all of the crawler drive sprocket mounting bolts

(b) and the hydraulic motor mounting bolts (c) for rust,

damage or looseness.

3. Replace any damaged or defective bolts and retighten

any loose bolts.

NOTE: Use anaerobic thread sealant when reinstalling

loose bolts and installing new bolts, tightening

all of them to the following values:

Fig. 5-69

5-50

SY335 Excavator

50 Hours of Maintenance

NOTE: Contact Sany if any abnormalities are found.

Item

Diameter

Grade

Torque Value

Thread Sealant

Drive Sprocket Mounting Bolt

M24

738 ft•lb (1,000 N•m)

10.9

Anaerobic sealant

Hydraulic Motor Mounting Bolt

M20

516 ft•lb (700 N•m)

Track Tension - Initial

If track tension is noticeably loose, operate the machine

with the engine at an idle speed. Travel forward a distance

of about 4 meters (13 feet) on level flat clear surface, then

stop the machine.

Fig. 5-70

Measure track tension:

1. Place a straight edge (3) between track idler wheel (1)

and rollers (2), then measure the track droop value “a”

as shown in the illustration. The required measurement

should be 0.4-1.2 in (10-30 mm)

NOTE: Be sure the surface is flat and stable.

2. If the tension is outside standard range parameters,

adjust as required.

Fig. 5-71

Typical

5-51

50 Hours of Maintenance

SY335 Excavator

Increase track tension:

1. Add grease through the grease fitting (a). (The grease fitting (a) and the screw plug are integral.)

Fig. 5-72

2. Slowly travel the machine forward 23-26 ft (7-8 m), stop and recheck to see if the track tension is suitable.

3. Add additional grease through the grease fitting if it is still beyond the required range.

NOTE: If the tension is still loose, when the distance

[S] becomes null (0), it is probably because

the bolt and bushing are worn. The bolt or

bushing must be repaired or replaced. Contact

your Sany dealer for this repair.

Fig. 5-73

5-52

SY335 Excavator

50 Hours of Maintenance

Reduce track tension:

DANGER

Do not loosen grease fitting (b)! This grease fitting is under pressure and can come out of the

track tensioning cylinder quickly and forcefully.

Failure to follow these instruction will cause serious injury or death!

1. Ensure that there is no gravel or mud between the sprocket and the track link before decreasing track tension.

2. Position yourself off to the side, not the front of the grease valve (a). Using the proper tools slowly loosen

grease valve (a) counterclockwise, in 90° increments (one quarter turn) to decrease track tension.

NOTE: The grease will come out behind the grease

valve.

3. If the grease does not come out smoothly, move the

machine back and forth for a short distance.

4. Check track tension, when it is correct turn grease valve

(a) clockwise and torque to 35 lb/ft (47N·m).

5. Move the machine forward at low idle speed, to a

distance that is equivalent to the length of an unfolded

track, and then park the machine.

Fig. 5-74

6. Check track tension again. Readjust if it is still beyond

the standard range.

7. Tighten grease valve (a), torque to 108 ft/lb (15 kgf/m).

5-53

50 Hours of Maintenance

SY335 Excavator

Lubricate

NOTE: Add grease to any component that produced abnormal noise regardless of the greasing schedule.

NOTE: After operating in water, the machine’s wet

support rollers (a) should be greased.

Slewing Turntable Bearing

Fig. 5-75

NOTE: It will be necessary to power up the machinery

and have one person perform the lubrication

procedure inspection while the crane operator slowly slews the crane 45 degrees at a time through a

complete circle, 360 degrees.

DANGER

Do not perform this check unless you have another person helping/viewing you who can

clearly communicate with the operator. Slew the crane slowly and insure that the person

lubricating the turntable does not place any body part where it may be crushed.

5-54

50 Hours of Maintenance

SY335 Excavator

Work Equipment

Inject grease through the work equipment greasing points as indicated in the following illustration. and as shown in

the decal next to the cab door.See “Fluids & Lubricants” on page 5-11 for additional information.

The following is a summary of lubrication points on the machine..

Fig. 5-77

1. Boom Cylinder Root Pin (2)

7. Bucket Cylinder Root Pin (1)

2. Boom Cylinder Root Pin(2)

8. Bucket-Rod Joining Pin (1)

3. Boom Cylinder Piston Rod End (2)

9. Arm-Bucket Joining Pin (1)

4. Arm Cylinder Root Pin (1)

10: Rod Joining Pin (2)

5. Boom-Arm Joining Pin (2)

11. Bucket Cylinder Piston Rod End (1)

6. Arm Cylinder Piston Rod End (1)

12. Bucket-Rod Joining Pin (1)

NOTE: The following pages give additional details on each of the lubrication points shown above.

5-56

SY335 Excavator

50 Hours of Maintenance

1. Inject grease the two boom cylinder root pin fittings (a).

Fig. 5-78

2. Inject grease into the two boom pin fittings (b), the two

boom cylinder piston rod end fittings (c), and the arm

cylinder root pin (d) fitting.

NOTE: These fittings are mounted on the top of the

boom near the base with lines leading to the

bearings.

Fig. 5-79

b d c

5-57

SANY Excavator SY335 (Part Number: 11282013). Safety, Operation & Maintenance Manual - page 6