Case 1850K Tier 3 Crawler Dozer Service Manual
P.I.N. HHA185LTN6HC49001 et AFTER (LT)
P.I.N. HHA185XTN6HC50001 et AFTER (XLT)
P.I.N. HHA185LPN6HC51001 et AFTER (LGP)
Type of machine: Crawler Dozer
Print No: 9-94100/English
Language and Format: English/PDF
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The Service Manual will give you complete information on repair, servicing and preventative maintenance, for your Case 1850K Tier 3 Crawler Dozer.
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Table of contents:
GENERALITIES
SAFETY RULES
IDENTIFICATION DATA
Table of fluids used
Main dimensions 1850K BD
Main dimensions 1850K PAT
Technical data
1850K (LGP)
1850K (LT/XLT)
WEIGHT TABLE 1850K
LIST OF WEIGHTS FOR MAIN SERVICE COMPONENTS
STABILITY
GENERAL INSTRUCTIONS
TROUBLESHOOTING
UNITS OF MEASURE
TABLE OF TIGHTENING TORQUES
SECTION 1. ENGINE
1.1 GENERAL SPECIFICATIONS
Identification of the engine
1.2 ENGINE DATA
1.3 DIAGRAMS ENGINE
1.4 ENGINE/CONVERTER REMOVAL AND INSTALLATION
Removal of engine group assembly
Removal of the radiator group
Removal of silencer group
Removal of converter group
Reinstalling the converter group
Reinstalling the silencer group
Reinstalling the radiator group
Reinstalling the engine group assembly
1.5 DIAGNOSTICS WITH BLINK CODE
SECTION 2. TRANSMISSION
2.1 GENERAL DESCRIPTION
2.1.1 Transmission torque converter hydraulic diagram
Transmission housing/propeller shaft/torque converter
2.2 TROUBLESHOOTING
2.3 TESTS
2.3.1 Torque converter stall test
2.3.2 Delivery pressure test procedure
2.3.3 Procedure for the check of the converter safety valve pressure
2.3.4 Transmission gear shifting electric control valve
2.3.4.1 Positioning of diagnostic hoses
2.3.5 Transmission setting
2.4 PROCEDURES FOR THE REPAIR OF THE TORQUE CONVERTER
2.4.1 Disassembly
2.4.2 Reassembly
2.5 PROCEDURES FOR THE REPAIR OF THE TRANSMISSION
2.5.1 Removal
2.5.2 Re-Installation
2.5.3 Disassembly
2.5.4 Overhaul of the forward speed clutch
2.5.5 Overhaul of the 3rd speed
2.5.6 Overhaul of the reverse speed clutch
2.5.7 Modulating valves (Disassembly/Assembly)
2.5.8 Pressure relief valve (Disassembly/Assembly)
2.6 SPECIFICATIONS AND DATA
2.6.1 General data
2.6.2 Tightening torques (Torque converter)
Transmission housing
2.6.3 Transmission Data
Transmission Clutch
Transmission clutch discs
1st – 2nd – 3rd speed Transmission Clutch modulating valves
Lube oil pressure relief valve
Forward/reverse modulating valves
Transmission pressure relief and torque converter safety valve
Torque converter/transmission feeding pump
Oil filters
2.7 SPECIAL TOOLS
SECTION 3. FINAL DRIVES
3.1 GENERAL DESCRIPTION
3.1.1 Final drive (Exploded view and sectional view)
3.2 REPAIR PROCEDURES
3.2.1 Final drive (Removal/Disassembly)
3.2.2 Pulling the housing cover
3.2.3 Driven gear (Bearing removal)
3.2.4 Driving gear shaft (Bearing removal)
3.2.5 Description of installation of front seals (Long life)
3.2.6 Final drive (Assembly)
3.3 SPECIFICATIONS AND DATA
3.3.1 Final drive shaft and bearing fittings
3.4 SPECIAL TOOLS
SECTION 4. BRAKES AND STEERING
4.1 GENERAL DESCRIPTION
4.1.1 Brakes hydraulic diagram
4.1.2 Brake circuit main components
Brake powering pump
Brake powering valve block
Brake pedal valve
Brake oil filter
4.1.3 Steering circuit main components
Hydraulic motor
Transmission control lever
4.2 TROUBLESHOOTING
4.2.1 Diagnosis on the display
4.3 TESTS
4.3.1 Test of circuit pressures on diagnostics
4.3.2 Positioning of diagnostic hoses
4.3.3 Brake pedal adjustment
4.3.4 Test and setting of brake powering valve block
4.4 REPAIR PROCEDURES
4.4.1 Brake pedal valve (removal / disassembly)
4.4.2 Brake power pump
4.4.3 Brakes and steering differential
Removal (preliminary operations)
Removal of the ring gear
Disassembly of the planet carrier assembly
Disassembly of the planet carrier differential assembly
Disassembly of the sun gear
Disassembly of the brake assembly
Re-assembly of the brake drum assembly
4.4.4 Check and inspection of brake packs
Re-assembly of the sun gear
Re-assembly of the planet carrier assembly
Re-assembly and re-installation of the ring gear assembly
Re-installation of brake/steering differential group into the transmission housing
4.4.5 Bevel gear set (Removal/Disassembly of pinion and bevel gear)
Removal
Disassembly of pinion
Disassembly of bevel gear crown
Re-assembly of bevel gear crown
Installation of the bevel pinion
Re-installation of the bevel gear crown
Re-installation of the pinion
4.4.6 Procedure for the setting of the bevel pinion bearings pre-load
4.4.7 Procedure for the setting of the bevel gear crown
4.4.8 Re-installation of housing cover
4.4.9 procedure for the check of the steering/equipment pump pressure
4.5 SPECIFICATIONS AND DATA
4.5.1 Bevel gear reduction unit (general data/dimensions)
4.5.2 Brakes
4.5.3 Brake pedal valve
4.6 SPECIAL TOOLS
SECTION 5. UNDERCARRIAGE
5.1 GENERAL DESCRIPTION
5.1.1 Generalities
5.1.2 Main components
5.2 TROUBLESHOOTING
5.3 INSPECTIONS
5.3.1 Inspection and adjustment of track chains
5.3.2 Setting of the track tensioner pressure relief valve
5.4 REPAIR PROCEDURES
5.4.1 Track chain (Removal/Installation)
5.4.2 Replacing a damaged link and reinstallation
5.4.3 Idler (Removal/Reinstallation/Overhaul)
5.4.4 Track chain tensioner spring (Removal/Installation)
5.4.5 Track chain support rollers (Removal/Installation/Overhaul)
5.4.6 Track chain bottom rollers (Removal/Installation/Overhaul)
5.5 SPECIFICATIONS AND DATA
5.5.1 Idler
5.5.2 Sprockets
5.5.3 Track chains
5.5.4 Bottom rollers
5.5.5 Support rollers
5.5.6 Track tensioner device
5.5.7 Front cross-member pivots
5.5.8 Wear limits
5.6 SPECIAL TOOLS
SECTION 6. DOZING EQUIPMENT HYDRAULIC SYSTEM
6.1 GENERAL DESCRIPTION
6.1.1 Operation of the hydraulic system
6.2 TESTS
6.2.1 Troubleshooting using test equipment
6.2.2 Use of the electronic service tool
6.2.3 Procedure for setting the relief valve
6.3 REPAIR PROCEDURES
6.3.1 Hydraulic oil reservoir
6.3.2 Equipment hydraulic pump
6.3.3 Hydraulic control valve (Removal/Disassembly/Overhaul)
6.3.4 Blade
6.3.5 Ripper
6.4 SPECIFICATIONS AND DATA
6.4.1 Electro hydraulic control valve
6.4.2 Hydraulic power pump
6.4.3 Blade lifting cylinder ball joint
6.4.4 Blade lifting control cylinder
6.4.5 Blade Tilt control cylinder (Bulldozer version)
6.4.6 Ripper cylinder PD 180
6.4.7 Ripper cylinder RP 14F
6.4.8 Blade push arms and rods
6.4.9 Ripper linkage for LT/XLT model
6.4.10 Ripper linkage for LGP model
6.4.11 Thrust arch and PAT blade
6.4.12 Blade angle cylinder (PAT version)
6.4.13 Blade tilt cylinder (PAT version)
6.5 SPECIAL TOOLS
SECTION 7. ELECTRICAL SYSTEM
SAFETY RULES
7.1 ELECTRICAL DIAGRAM OF PROTECTION TREE
7.1.1 Fuses
7.1.2 “Link” fuses and cold starting fuse
7.1.3 Main switch
7.1.4 Engine starting switch
7.1.5 Back-up alarm
7.1.6 Starter motor
7.1.7 Alternator
7.1.8 Manual accelerator control potentiometer
7.1.9 Washer tank motor
7.1.10 Cab wiper motors
7.1.11 Implement/drivetrain safety levers
7.2 INSTRUMENT PANEL/MONITOR
7.2.1 Electrical diagram of instrument panel/monitor
7.3 MONITOR SENDERS
7.4 DISPLAY
7.4.1 Diagnosis on display
7.5 BUZZER
7.6 RELAYS – DIODES – FUSES
7.7 MAIN CONNECTORS 19 – 21 – 23 WAYS
Blade control pilot valve
SECTION 8. AIR CONDITIONING UNIT
8.1 AIR CONDITIONING UNIT
8.1.1 Operating instructions
8.1.2 Technical data
8.1.3 Cab climate conditioner
8.1.4 Service precautions
8.1.5 Tool connections
8.1.6 Discharging
8.1.7 Refrigerant charging
8.1.8 Leak inspection
8.1.9 Special tools
8.1.10 Troubleshooting