CASE CX33C Mini Excavator Service Repair Manual Instant Download

SERVICE MANUAL

Part number 48139719

English May 2017

Dipper hydraulic system

Excavator and backhoe bucket hydraulic system

T ool quick coupler hydraulic system

Hammer and rotating bucket hydraulic system

Swing arm hydraulic system

Dozer blade cylinders

Frames and ballasting

[39.140] Ballasts and supports

T racks and track suspension

T rack frame and driving wheels

T racks

T rack tension units

[48.138] T rack rollers

Electrical systems

Electrical system

Harnesses and connectors

Cab engine controls

Engine control system

Engine starting system

Alternator

Battery

Fuel tank system

Engine intake and exhaust system

Engine cooling system

Engine oil system

Cab controls

Cab controls (Lift Dipper , Bucket)

External lighting

Foreword - Important notice regarding equipment servicing

All repair and maintenance work listed this manual must carried out only qualified dealership strictly complying with the instructions and whenever the special

Anyone who performs repair and maintenance operations without complying with the procedures provided herein shall responsible for any subsequent

The manufacturer and all the organizations its distribution chain, including - without limitationnational, regional, local reject any responsibility for damages caused parts and / components not approved the facturer , including those used for the servicing repair the product manufactured marketed the manufacturer any case, warranty given attributed the product manufactured marketed the manufacturer case damages caused parts and / components not approved the manufacturer

The manufacturer reserves the right make improvements design and changes specifications any time without notice and without incurring any obligation install them units previously and illustrative material herein are accurate known time publication but are subject change without notice.

case refer your CASE

CONSTRUCTION Sales and Service

INTRODUCTION

Safety rules

Personal safety

This the safety alert used alert you potential personal injury Obey all safety messages that follow this symbol avoid possible death injury

Throughout this manual you will find the signal words W and CAUTION followed special These precautions are intended for the personal safety you and those working with

Read and understand all the safety messages this manual before you operate service the

DANGER indicates a hazardous situation not will result death serious injury

W

ARNING indicates a hazardous situation not could result death serious injury

CAUTION indicates a hazardous situation not could result minor moderate injury

F AILURE T O FOLLOW DANGER, W ARNING, AND CAUTION MESSAGES COULD RESUL T DEA SERIOUS INJUR Y .

Machine safety

NOTICE: Notice indicates a situation that, not avoided, could result machine property damage.

Throughout this manual you will find the signal word Notice followed special instructions prevent machine property damage. The word Notice used address practices not related personal safety .

Information

NOTE: Note indicates additional information that clarifies other information this

Throughout this manual you will find the word Note followed additional information about a step, other information the The word Note not intended address personal safety property

Safety rules - General information

Cleaning

Clean the metal parts with cleaning solution that meets the standard and steam (except for bearings)

After cleaning, dry well, and inject oil all parts.

Also inject oil into the bearings after

Inspection

When disassembling check all the there are any worn damaged replace Inspect carefully prevent initial

Bearing

Replace any loose

Air dry bearings before installing

Needle bearing

When inserting needle very careful not damage

Apply grease the section where the needle bearing will

Gear

Check that there wear and Oil seal, Oring, gasket

Always install new oil O - and

Apply grease sections where oil seals and O - rings will

Shaft

Check that there wear and

Check the bearings and check for damaged oil seals the shaft.

Service parts

Install CASE CONSTRUCTION genuine service parts.

When placing order , check the parts contains the CASE CONSTRUCTION genuine part

Any breakdowns arising from the installation non - genuine parts are not covered the warranty

Lubricants (fuel, hydraulic oil)

Use the oil from the specified company specified the manual service

Any breakdowns arising from any fuel hydraulic oil other than those specified are not covered the warranty

Engine - Engine and crankcase

Engine - Component identification

SMIL17MEX0127FB 1

Lifting eye (flywheel end)

Lifting eye (engine cooling fan end)

Engine coolant pump

Engine cooling fan

V - belt

Dipstick (engine oil)

13. Fuel filter

Fuel return fuel tank

Fuel inlet

Crankshaft V - pulley T filler port (engine oil)

Side filler port (engine oil)

17. Rocker arm cover

EGR valve

Engine oil cooler Flywheel

Fuel injection pump

10. Engine oil filter

Intake manifold

Starter motor

21. Exhaust manifold

Alternator

NOTE: engine oil drain plug location may vary depending oil pan

Engine - Engine and crankcase

Engine - Exploded view

SMIL17MEX0144GB 1

Cylinder block

Camshaft bushing

Crankshaft pulley

22. Main bearing inserts

Dowel used) Main bearing cap

O - ring Oil pan spacer

Front plate Oil pan

Gear case cover Thrust bearings

Front crankshaft seal

27. Ring gear

T appets Flywheel

Camshaft

Camshaft gear key

1 Camshaft end plate

Camshaft gear

31.

Connecting rod cap

Connecting rod bearing inserts

Connecting rod

W rist pin bushing

Idler gear shaft Circlip

Idler gear bushing

W rist pin

Crankshaft

Crankshaft

Engine - Engine and crankcase

Engine - Dynamic description

Function major engine components

Air cleaner

Alternator

Dipstick (engine oil)

Electric fuel pump

Components

Engine oil filter

Engine oil cooler

Functions

The air cleaner prevents airborne contaminants from entering the Since the air cleaner application must carefully selected application engineer

The alternator driven a V - belt which powered the crankshaft Vpulley The alternator supplies electricity the engine systems and charges the battery while the engine

The engine oil dipstick used determine the amount engine oil the

The electric fuel pump makes sure there a constant supply diesel fuel the fuel injection The electric fuel pump electro - magnetic and runs V must installed every This standard equipment with every engine.

The engine oil filter removes contaminants and sediments from the engine oil.

The engine oil cooler helps keep the engine oil Engine coolant from the cooling system circulated through adapter the base the engine oil filter assembly and then returned the coolant pump

The fuel filter removes contaminants and sediments from the diesel W ater separator

Fuel filter

The water separator removes sediment and water from diesel fuel going the fuel filter . This a required component the fuel system and standard equipment with every The water separator installed between the fuel tank and the fuel feed Periodically drain the water from the water separator

Fuel tank

The fuel tank a reservoir that holds diesel fuel. When the fuel leaves the fuel tank goes the fuel filter / water separator Next the fuel pumped the fuel filter the electric fuel Then the fuel goes the fuel injection Since the fuel used keep the fuel injection pump cool and more fuel than necessary enters the injection When the injection pump pressure reaches a preset value, a relief valve allows the excess fuel returned back the fuel The fuel tank a required engine

Side and top filler port (engine oil) Y can fill the crankcase with engine oil from either the side the top filler port depending upon which one most

Starter motor

The starter motor powered the battery When you turn the key switch the operator ’ s console the T position, the starter motor engages with the ring gear installed the flywheel and starts the flywheel

Main electronic control components and features

Components / feature

Engine Control Unit (ECU)

Description

The ECU adjusts the rack position the fuel injection pump depending the speed command signal from the accelerator sensor , thus regulating the engine speed and power . The ECU also regulates the opening the EGR valve depending the engine speed and power serves the master station for the following components /

Electronic governor (eco - governor) The electronic governor consists the engine speed sensor , the rack actuator , and directly connected the fuel injection pump order regulate the rack position the fuel injection pump depending the signals communicated with the ECU.

Fuel injection pump (for eco - governor) The fuel injection pump single plunger type and equipped with a Cold System Device (CSD) solenoid valve that allows the fuel injection timing advance and the injection quantity increase, thereby improving the cold start performance the

EGR valve Controls the exhaust gas recirculation flow rate depending the engine speed / load signals from the installed the top the exhaust

Accelerator sensor

Fault indicator

Unlike mechanical the Eco - governor has governor lever The accelerator sensor serves the governor lever provide the speed command signal (voltage signal) the ECU for engine speed control. installed the operator cabin the driven Constant speed engines for generator use not require accelerator sensors because the engine speed can shifted via a switch the Optional CAN communication capability available option.

Optional

installed the operator ’ s a fault occurs the ECU Eco - governor , the fault indicator flashes alerting the operator a The number flashes and / the flashing pattern vary depending the type source the fault, Optional enabling quick -

Engine diagnosis tool

Option for service

Allows the operator troubleshoot the cause a problem based detailed information regarding the problem occurring the ECU eco - governor . This tool can also used for data maintenance tasks including programming and Engine coolant temperature sensor Allows the CSD controlled engine cold start conditions.

Glow plugs Optional When the key switch turned the the glow plugs / air heater are / energized for seconds (glow The duration energization depends the engine coolant temperature. The HEA T indicator during When the indicator goes turn the key switch the T position start the

Droop control Standard with series Reduces the engine speed a certain percentage from load full (rated) load steady state operation. The same percentage droop maintained even when the load increases any - load

Isochronous control Standard with series Optional with series fers a constant engine speed from load full The engine speed does not decrease even when the load increases any - load

Low - idling speed

When the engine cold, increases the low - idling speed 1000 RPM depending the engine coolant When the coolant temperature reaches a predetermined this feature returns the engine speed the normal low idle thus reducing the warm -

Components / feature

Engine - Engine and crankcase

Description

High - idling speed down Optional Decreases the high - idling speed depending the engine coolant When the coolant temperature falls a predetermined this feature returns the engine speed the normal high idle thus minimizing the emission white smoke low

Auto deceleration Optional Brings the running engine low idle mode automatically when the accelerator pedal not operated for a predetermined period When the pedal for the accelerator sensor the low idle mode

Engine - Compression test

Compression pressure drop one the major causes increasing blow - gas (engine oil contamination increased engine oil consumption a resultant nomenon) starting The compression sure fected the following factors:

degree clearance between the piston and the cylinder;

degree clearance the intake / exhaust valve seat;

gas leak from the nozzle gasket cylinder head

The pressure will drop due increased parts wear Pressure drop reduces the durability the

A pressure drop may also caused a scratched cylinder dust entrance from the dirty air cleaner element a worn broken piston Measure the compression pressure determine the condition the

Compression pressure measurement method

W arm the

Stop the Remove the high - pressure fuel tion lines assembly from the Remove the fuel injector from the cylinder sured (refer Fuel injectors - Remove (10.218)

NOTICE: remove install the high - pressure fuel injection lines assembly whenever Disassembling the high - pressure fuel injection lines from the retainers bending any the fuel lines will make difficult reinstall the fuel

T urn f the fuel supply valve the fuel supply Disconnect the fuel injection pump stop solenoid the connector This prevents the fuel injection pump from injecting fuel during the compression

Before install the compression gauge (1) adapter (refer Engine - Special tools (10.001) crank the engine with the stop solenoid disconnected for a few seconds clear the cylinder any residual

Install a nozzle seat the tip end the compression gauge adapter Install the compression gauge (1) and the compression gauge adapter the cylinder measured.

Crank the engine until the compression gauge reading

After performing the compression remove the compression gauge (1) and the compression gauge adapter from the cylinder

Reinstall the fuel injector , the high - pressure fuel tion and reconnect the stop solenoid (refer Fuel injectors - Install (10.218)

Engine - Engine and crankcase

10. T urn the fuel supply valve and reconnect the tion pump stop

1 Prime the fuel system (refer Fuel - water separator filter - Replace (10.206) Check for T est the

Standard compression pressure (reference value)

Engine speed and compression pressure (use for reference)

Measured value and troubleshooting

When

Engine - Change fluid - Engine oil and oil filter

NOTE: replace the oil while the engine warm, but not hot. Doing helps the oil flowing. Park the machine a flat and level Stop the remove the starter key

Remove the cover drain

Place a container with a capacity L ( 2.6 gal ) under the drain

Remove the drain plug and drain the oil.

Open the engine hood and remove the fill cap.

Clean around the filter remove the filter (1) with a filter wrench and clean the gasket surface.

Open Close

Apply oil film finely the seal a new filter

Install a new filter T urn the filter until the seal touches the filter and then tighten further a half turn

NOTE: not use a filter wrench for tightening the filter

Overtightening can damage the filter and its

Open Close Install the drain

10. Add new engine oil the engine (quantity: 6.7 L ( gal ) Install the fill

1 Run the engine for several minutes check that there are leaks the filter and the drain plug.

12. Stop the engine and check the oil level with the Add oil necessary

NOTE: always wait min allow the oil return the sump before checking the oil level. Install the cover the drain

Engine - Engine and crankcase

Engine - Remove CAUTION

Overhead object hazard!

When the grain tank covers are open, the total machine height excess 5.4 m (17.7 ft). Make sure the machine has sufficient clearance pass all directions. Pay special attention overhead

Failure comply could result minor moderate injury . C0001A

W ARNING

Chemical hazard!

Use caution when opening the quick coupler cap from the load port. There may product left the

Failure comply could result death serious injury .

W ARNING

Crushing hazard!

W1039A

The lifting systems must operated qualified personnel who are aware the correct procedures follow . Make sure all lifting equipment good condition, and all hooks are equipped with safety

Failure comply could result death serious injury .

W ARNING

Heavy objects!

W0256A

Lift and handle all heavy components using lifting equipment with adequate capacity . Always support units parts with suitable slings hooks. Make sure the work area clear all bystanders.

Failure comply could result death serious injury

W ARNING

Burn hazard!

W0398A

Before performing any service the hydraulic you must allow Hydraulic fluid temperature should not exceed (104 °F).

Failure comply could result death serious injury .

W ARNING

Escaping fluid!

W0241A

Hydraulic fluid diesel fuel leaking under pressure can penetrate the skin and cause infection other injury T o prevent personal injury: Relieve all pressure before disconnecting fluid lines performing work the hydraulic system. Before applying pressure, make sure all connections are tight and all components are good condition. Never use your hand check for suspected leaks under pressure. Use a piece cardboard wood for this purpose. injured leaking fluid, see your doctor immediately .

Failure comply could result death serious injury

W ARNING

Chemical hazard!

When handling and other service follow the

W0178A

W ear Personal Protective Equipment (PPE) instructed. not smoke use open flame. Collect fluids proper containers. Obey all local and environmental regulations when disposing

Failure comply could result death serious injury .

W0371A

Engine - Engine and crankcase

Set the battery disconnect switch O position (OFF sition) cut f any power supply the electrical system the machine (for details see Mechanical Battery isolator - Dynamic description

Remove the right - hand side panels (refer Side els - Remove (90.100)

Remove the left - hand side panels (refer Side panels - Remove (90.100)

Remove the engine access door (refer Hood - Remove (90.100)

Remove the canopy (refer Canopy assembly - Remove 14)

Remove the Counterweight, for details, see weight - Remove

Remove the operator seat (refer Operator seat - Remove (90.120)

Remove the operator seat base trim panel (refer Operator seat base trim panel - Remove - Platform

Remove the radiator (refer Radiator - Remove

Use a wrench [ ] remove the four bolts (1)

SMIL17MEX1422AB 1

Use a wrench [ ] remove the two bolts (2) .

Use a wrench [ ] remove the bolt (1) and then remove the hose from the bracket (3)

SMIL17MEX1423AB 2

Remove the bracket (1) . SMIL17MEX1424AB 3

Place a receptacle a suitable capacity under the drain plug (2)

Remove the drain plug (2) located the bottom the tank (1) and drain the

After close the drain plug (2) SMIL16MEX2546AB 4 Use a wrench [ ] remove the two bolts and then remove the bracket with the battery disconnect switch (1)

SMIL17MEX1441AB 5

Disconnect the electrical connector - (1) from the air cleaner (2) SMIL17MEX1442AB 6

10. Loosen the clamps and remove the air hoses (1) from the

1 Use a wrench [ ] remove the two bolts (3) Remove the air cleaner (2)

SMIL17MEX1443AB 7

Use a wrench [ ] remove the two bolts (1) and then remove the hydraulic oil pilot filter (3) from the bracket (4)

Use a wrench [ ] remove the two bolts (2)

SMIL17MEX1444BB 8

Use a wrench [ ] remove the two bolts (1) and then remove the support platform (2) .

SMIL17MEX1445AB 9

16. Close the fuel pre - filter cock (1) .

Use a wrench [ ] remove the bolt (3) and then remove the fuel pre - filter (2)

SMIL17MEX1446AB

Disconnect the electrical connectors - 145 (1) the fuel feed

Use a wrench [ ] remove the bolt and then disconnect the earth strap (2) from the

SMIL17MEX1447AB

Disconnect the electrical connector - (1) the engine oil pressure switch.

SMIL17MEX1448AB

Disconnect the electrical connector - 194 (1) the rack actuator .

Disconnect the electrical connector - (2) the tacho sensor

SMIL17MEX1449AB

23. Disconnect the electrical connector - 8 (1) from the engine coolant temperature sensor

SMIL17MEX1450AB

24. Disconnect the electrical connector - (1) the current switch

SMIL17MEX1451AB

Disconnect the electrical connector - 193 (1) the EGR

Disconnect the electrical connector - (2) the pre - heater

SMIL17MEX1452AB

Loosen the clamp and remove the fuel hoses (1) from the fuel filter (2)

SMIL17MEX1453AB

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28. Place a receptacle a suitable capacity under the drain plug (2)

Remove the drain plug (2) located the bottom the tank (1) and drain the hydraulic oil.

30. After draining, close the drain plug (2) .

SMIL17MEX1426AB

Use a wrench [ ] disconnect the hoses (1)

32. Use a wrench [ ] disconnect the hose (2) .

• Mark the pump and hoses that the connectors match the time assembly

• Use caps and plugs cover the pump and hoses prevent any entry water , dust

• Clean the pump and hoses spraying them with a parts cleaner prevent scratches and prevent dirt from accumulating the

SMIL17MEX1427AB

Loosen the clamp (1) disconnect the suction hose (2) .

34. Use a wrench [ ] disconnect the hose (3) .

SMIL17MEX1428AB