57 PERIODIC SERVICE C Evacuator Valve Open the evacuator valve once a week under ordinary conditions - or daily when used in a dusty place - to get rid of large particles of dust and dirt. B Checking Fuel Line and Fuel Filter B Adjusting Alternator Belt Tension To avoid personal injury: A Be sure to stop the engine and remove the key when attempting to make the following checks and changes. A Never fail to check the fuel lines periodically. The fuel lines are subject to wear and aging. Fuel may leak out onto the running engine, causing a fire. To avoid personal injury: A Be sure to stop the engine before checking belt tension.
The fuel line connections should be checked annually or every 100 service hours, whichever comes first. 1. Park the vehicle on a flat surface and raise the cargo bed. 2. The fuel line is made of rubber and ages regardless of service period. 3. If the fuel line and clamps are found to be damaged or deteriorated, replace them. 4. Remove the under guard. 5. Check fuel filter, if it is clogged by debris or contaminated with water, replace it. 6. Install the under guard. 1. Park the vehicle on a flat surface and raise the cargo bed. 2. Stop the engine and remove the key. 3. Apply moderate thumb pressure to belt between pulleys. 4.
If tension is incorrect, loosen the alternator mounting bolts and, using a lever placed between the alternator and the engine block, pull the alternator out until the deflection of the belt falls within acceptable limits. 5. Replace alternator belt if it is damaged. A When the fuel line is disconnected for maintenance or repair, close both ends of the fuel line with a piece of clean cloth or paper to prevent dust and dirt from entering. In addition, particular care must be taken not to admit dust and dirt into the fuel pump. Entrance of even a small amount of dust or dirt cause premature wear and malfunction of the fuel pump and injector components.
(1) Bolt (A) Check the belt tension (B) To tighten (1) Under guard Proper alternator belt tension A deflection of between 7 to 9 mm (0.28 to 0.34 in.) when the belt is pressed in the middle of the span.