JCB JZ 70 Midi Excavator Service Manual
318 pages · Publication 9803-6030
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- Models
- JZ 70
- Serial coverage
- From SN 834000
- Manual type
- Service Manual
- Pages
- 318
- Publication
- 9803-6030
- Condition
- Brand new
What's inside
From the manual's own table of contents: 176 topics. See sample pages (PDF, 512 KB)
- Bolt and Nut Torque Specifications
- General Torque Settings
- Section B - Body and Framework
- Section C - Electrics
- Section E - Hydraulics
- Sealing and Retaining Compounds
- Safety Notices
- General Safety
- Operating Safety
- Maintenance Safety
- Fluids and Lubricants
- Lubricants - Health and Safety
- when using a Breaker
- Operating Hours Schedule
- Slew Ring Teeth and Slew Pinion
- Slew Ring Bearing
- Excavator End (Standard Boom)
- Excavator End (Offset Boom)
- Battery
- Air Bleeding Procedures
- Bleeding Air from the Hydraulic Pump
- Bleeding Air from the Slew Motor
- Bleeding Air from the Rams
- Checking the Fluid Level
Show all 176 topics
- Releasing Tank Pressure
- Topping up Fluid Level
- Changing the Fluid
- Changing the Return Filter Element
- Cleaning/Changing the Suction Strainer
- Changing the Nephron Filter
- Changing the Air Breather Element
- Draining Tank Impurities
- Changing the Servo Oil Filter
- Changing the Breaker In-line Filter (If fitted)
- Slew Gearbox Grease
- Checking Track Gearbox Oil Level
- Changing the Track Gearbox Oil
- Cleaning the Tracks
- Checking/Adjusting the Track Tension
- Checking the Track Shoes
- Checking the Rollers and Idler Wheels for Oil Leaks
- Changing the Air Filter Elements
- Checking the Oil Level
- Changing the Oil and Filter
- Checking the Coolant Level
- Coolant Mixtures
- Changing the Coolant
- Cleaning the Radiator and Oil Cooler
- Checking the Fan Belt Tension
- Fitting a New Fan Belt
- Draining Fuel Tank Impurities
- Draining the Water Separator
- Cleaning the Water Separator
- Changing the Fuel Filter Element
- Cleaning the Lift Pump Strainer
- Bleeding the Fuel System
- Component Locations
- Direct Glazing
- Operation
- Control
- Safety Procedures
- Fault Finding
- Checking Refrigerant Charge Level
- Leak Testing
- Tightening Leaking Hoses
- System Diagnosis
- Technical Data
- Battery Testing
- Schematic Diagram
- Harnesses
- Operator’s Cab
- Right Console
- Left Console
- Monitor Panel
- Relays
- Introduction
- Circuit Concepts
- Pulse Width Modulation (PWM)
- Testing of EMS Inouts and Outputs
- Circuit Symbols
- Throttle Control System
- Throttle Control Circuit
- Engine Throttle Control
- Engine Throttle Control for Each Mode
- One Touch Idle
- Fuel Level Sensor Warning
- Engine Temperature Sensor/Warning
- Hydraulic Temperature Sensor/Warning
- Engine Oil Pressure Warning
- Pre Heat Warning
- Service Required Warning
- No Charge Warning
- Servo Isolator/Lever Lock Warning
- Swing Brake
- Swing Lock (100% Swing Brake)
- High Speed Travel
- Offset Boom (When Fitted)
- Engine Throttle Control Calibration
- EMS Monitor Socket
- EMS Set Menu
- EMS Set + Mode (5 secs)
- Set + Mode (20 secs)
- List of Circuits
- Component Identification
- Mating Face Connector Views
- Alternator Charging and Battery Relay
- Engine One Touch Idle
- Engine Start/Stop
- Engine Pre Heat
- Lever Lock and Isolator
- Wiper
- Washer
- Horn
- Travel Alarm
- Section C
- Electrical Schematics (Cont’d)
- Swing Lock
- Work Lamps
- Fuel Sensor
- Engine Temperature
- Hydraulic Temperature
- Quickhitch (Optional)
- Beacon
- Low Flow (Grab Rotate/Weedcutter)
- Hammer
- Warning Indicator Lamps
- Heater
- Air Conditioning
- Refueling Pump
- Radio
- Cigar Lighter
- Cab Interior Lamp
- Swing/Offset
- EMS/Power Supply Network
- Diagnostics Socket
- Schematic Hydraulic Circuit
- Spool in Neutral
- Single Spool Operation (Arm/Boom/Bucket/Offset)
- Two Spool Operation - Multi Functioning
- Travel Operation
- 100% Swing Brake
- 50% Swing Brake
- Swing Operation
- Cross Line Relief Valve
- Swing Reduction Gear Oil Recycling
- Dozer Operation
- JZ 70 Pump Theory
- Anti Cavitation
- Pressure Testing
- Dismantling and Assembly
- Machine Valve Location
- Maintenance Specifications
- Precautions During Use
- Pilot Line System
- Bucket Ram Removal and Replacement
- Dipper Ram Removal and Replacement
- Boom Ram Removal and Replacement
- Offset Boom Ram Removal and Replacement
- Blade Ram Removal and Replacement
- Ram Piston Head Nut - Removal and Fitting
- Torque Specifications
- Description
- Removal
- Replacement
- Dismantling
- Hydraulic Motor Components
- Reduction Gear Components
- Hydraulic Circuit
- Removal and Replacement
- Motor Bleeding
- Testing
- Replacing the Shoe Plate
- Replacing the Track Link
- Changing from Steel to Rubber Tracks
- Changing from Rubber to Steel Tracks
- Assembly
Inside this manual
Real pages from this service manual (318 pages). Open the sample pages (PDF, 512 KB)
- Troubleshooting, page 75: System Diagnosis (cont'd)
- Diagram, page 151: Electrical Schematics
- Specifications, page 167: Schematics
- Foldout diagram, page 85: Electrics
This is a service manual
Here's how it compares to the other manual types.
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 318 pages
Quantity one is the manual described above.
Fast free USA shipping
Ships in 1 business day.
60-day returns
Free if the mistake is ours. A manual ordered in error must come back unopened in its shrink-wrap; you pay return shipping and a 20% restocking fee applies. Return policy
Binder not included
Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).