Complete workshop repair & service manual with electrical wiring diagrams for JCB 444 Mechanical Engine. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This JCB 444 Engine Mechanical service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

“9806_3000-4.pdf”
JCB 444 Engine Mechanical Service Manual
432 pages; Publication No. 9806/3000-04

Service Manual - JCB 444 Mechanical Engine
TABLE OF CONTENTS
General Information
Section 1 - Genera/Information
Section 2 - Care and Safety
Section 3- Routine Maintenance
Section 4 - Systems Description
Section 5- Fault Finding
Section 6- Test Procedures
Section 7- Fuel System
Section 8 - Cooling System
Section 9 - Lubrication System
Section 10 - Electrical System
Section 11 -Induction and Exhaust System
Section 12 -Base Engine
…

EXCERPT:
Section 4 - Systems Description - Engine Overview
Basic Description

The JCB 444 engine is a 4 cylinder diesel engine in which the fuel is ignited by compression ignition (C.I.). The engine operates on a four stroke cycle, =>The Four Stroke Cycle (4-14).
The engine is started by electric starter motor 7-1. The motor turns the engine via a pinion and teeth on the engine flywheel 7-2.
When the engine runs the crankshaft 7-3 drives the camshaft 7-4 via gears. The camshaft opens and closes the inlet and exhaust valves 7-5 and 7-6 via push rods 7-7 in time with the four stroke cycle. The engine has 16 valves, 2 inlet and 2 exhaust valves for each cylinder.
The crankshaft also drives a mechanical fuel injection pump 7-8 via gears. The pump injects fuel via injectors, or atomizers 7-9 into each cylinder in time with the four stroke cycle. Fuel is pumped from a fuel tank to the injection pump by means of a lift pump 7-10 driven by cam lobes on the camshaft.
Air is drawn into the engine via inlet manifold 7-11 and exhaust gasses exit via exhaust manifold 7-12. On turbocharged engines an exhaust driven turbocharger 7-13 pressurizes air at the inlet manifold.
A mechanical lubrication oil pump 7-14 is driven by the crankshaft via gears. The pump pressurizes and circulates oil for engine lubrication and cooling purposes.
A drive belt 7-15 again driven by the crankshaft, drives a coolant circulation pump, alternator, radiator cooling fan and other ancillaries such as an air conditioning compressor.
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