Fuel system - Service procedures
10
17
Set the dial gauge to zero. Turn the pump coupling in the pump’s direction of rotation (clockwise seen from in front) until the dial gauge shows 1–2 mm higher lift than the adjustment value. Check that the zero setting is retained when the turning begins.
Fit the hex socket plug using a new copper washer.
11
19
Tighten the clamping screw sufficiently tight so that the pump coupling can be turned with powerful resistance. This must be done to eliminate gear-tooth flank play in the timing gear and play in the injection timing device.
Fit the oil pipes between the injection pump and engine block.
18 Fit the inspection plug on the flywheel casing.
20 Connect the fuel pipes.
12 Turn the pump coupling in the opposite direction to the pump’s direction of rotation until the dial gauge shows the correct lifting height.
21 Fit the pipe to the smoke limiter, if any.
NOTE! If it is turned too far it is necessary to start again from item 10.
13 Tighten the pump coupling’s clamping screw.
After-checking 14 Check the setting or adjustment by turning back the engine approx. 1/4 turn in the opposite direction to the direction of rotation, and then in the direction of rotation until the correct lifting height is obtained on the dial gauge. Read off the number of degrees on the flywheel. 15 If after-adjustment is necessary release the pump coupling’s clamping screw and repeat items 4, 8, 10, 11, 12, 13 and 14. 16 Dismantle tool 6848 from the pump.
82
22 Connect up the fuel delivery pipes and fit the fuel return pipe. VIKTIGT! Fuel delivery pipes must never be bent or altered. A damaged fuel delivery pipe should always be replaced with a new one.
