Ford Tractor Repair Manual Series 2310, 2600, 2610, 3600, 3610, 4100, 4110, 4600, 4610, 4600SU, 4610SU

CAUTION: Fuel leaves injector nozzle with sufficient force to penetrate skin. When testing, stay clear of nozzle spray.

ALL DIESEL MODELS

105. Diesel engines are fitted with C.A.V. fuel injector assemblies. The injector nozzles have four spray holes spaced apart in a pattern of 110, 90, 70 and 90 degrees around the nozzle tip.

106. TESTING AND LOCATING A FAULTY INJECTOR

If engine does not run properly and a faulty injector is indicated, locate faulty injector as follows: With engine running, loosen high pressure line fitting on each injector in turn, thereby allowing fuel to escape at union rather than enter injector. As in checking for malfunctioning spark plugs in a spark ignition engine, a faulty injector is the one which, when its line is loosened, least affects the running of the engine.

107. INJECTOR TESTER

A complete job of testing and adjusting a fuel injector requires use of a special tester such as shown in Fig. 87. The injector should be tested for opening pressure, spray pattern, seat leakage and leak back.

Operate tester until oil flows, then connect injector to tester. Close tester valve to shut off passage to tester gauge and operate tester lever to be sure nozzle is in operating condition and not plugged. If oil does not spray from all four spray holes in nozzles, if tester lever is hard to operate or other obvious defects are noted, remove injector from tester and service as outlined in paragraph 113.

• Detailed illustrations and exploded views
• Troubleshooting sections covering most models
• Brakes
• Cooling system
• Differential
• Electrical system
• Engine
• Final drive
• Axles
• Hydraulics
• Transmission
• Condensed service data information
• Detailed index

• Accurate information in a concise, easy-to-use format
• Durable, coated paper stands up to messy shop jobs