Bell B40C 6X6 Operator's Manual page 108

2. Remove the filter elements from the filter
bowls.
3. Discard the filter elements, do not re-use.
4. Check the filter bowls for damage.
5. Fit new filter elements into the filter bowls.
6. Clean the filter heads with a lint free cloth.
7. Smear a little fuel on the sealing rings of the fil-
ter heads.
8. Fill filter bowls with fuel and re-fit in the filter
head.
9. Tighten the secondary fuel filters by hand and
then one half turn further.
10. Bleed the fuel system.
11. Start the engine and check for leaks at the sec-
ondary fuel filter head.
Check the Anti-freeze/Corrosion
Inhibitors
Refer BELL EQUIPMENT Product Support.
Adjust the Engine Valve Clearance
Refer to the ADE Engine Repair Manual for the pro-
cedures.
Check the Drive Belt Tensioning
Note: The following procedure is applicable to the
alternator drive belts and the air conditioner com-
pressor drive belts.
The drive belts' tension should be: new belts 40 to
45 kg (88 to 99 lb); old belts 30 to 40 kg (66 to 88 lb).
Use an automotive tension tester to measure the
drive belts tension.
78
2
3
1. Unscrew the sleeve (1) and release the feeler
bar (2).
2. Place the feeler bar in the perpendicular posi-
tion.
3. Pull the feeler bar down.
4. Set the tension for measuring new belts by
turning the sleeve to the 40 to 45 kg (88 to 99
lb) mark on the scale (3)
5. Position the tension tester on the middle of the
drive belt.
6. Press down the tension tester until the touch
signal is felt at the top of the cap.
7. Carefully remove the tension tester from the
drive belt and read the scale.
The feeler bar has three positions:
2
1
1. If the bottom of the feeler bar (1) is on the
gauge line (2), the belt tension is correct.
2. If the bottom of the feeler bar is below the
gauge line, the belt tension is too tight.
3. If the bottom of the feeler bar is above the
gauge line, the belt tension is too loose.
If the correct readings are not obtained, adjust the
drive belts.
1
F000720
F000721
870984-01
June 1, 1999