SkyTrak 3606 Service Manual - Manual (Page 181)

Cummins Engine
8B-11
Figure 8B–7. Cummins engine fuel system.
8B.7.1 Diesel Fuel
Fuel represents a major portion of vehicle operating
costs and therefore must be used efficiently. ALWAYS
use a premium brand of high-quality, clean diesel fuel.
Low cost, inferior fuel can lead to poor performance and
expensive engine repair.
Note: Use only diesel fuel designed for diesel engines.
Some heating fuels contain harmful chemicals that can
seriously affect engine efficiency and performance.
IMPORTANT: Due to the precise tolerances of diesel
injection systems, keep the fuel clean and free of dirt and
water. Dirt and water in the fuel system can cause severe
damage to both the injection pump and the injection noz-
zles. Use ASTM No. 2 D fuel with a minimum cetane rat-
ing of 40. No. 2 diesel fuel gives the best economy and
performance under most operating conditions. Fuels with
Cetane numbers higher than 40 may be needed in high
altitudes or extremely low ambient temperatures to help
prevent misfiring and excessive smoking.
1. Fuel filter
2. Straight barb connector, #6-4P
3. Hose clamp, SAE Type F
4. Fuel hose, 3/8" x 10"
5. Fuel strainer
6. Fuel tank-to-engine hose, 3/8" x 85"
7. Hose barb coupling, #6-6P,
use with Item 31
8. Square-head black plug, MI#6,
use with Item 31
9. Fuel sender w/gasket
10. Fuel sender cover
11. Lockwasher, #10
12. Pan-head screw, #10-24 x 3/4"
13. Pan-head screw, #10-24 x 5/8"
14. Fuel breather hose
15. Beaded hose tee
16. Fuel breather hose
17. Fuel filler
18. U-type muffler clamp, 2"
19. Fuel cap w/keys (incl. Item 20)
20. Keys (set of two)
21. Upper hose clamp, SAE Type F
22. Fuel filler hose
23. Lower hose clamp, SAE Type F
24. Fuel tank
25. 90 ° hose barb elbow, #10-6P,
use with Item 31
26. Gasket
27. Fuel breather hose
28. 90 ° hose barb elbow, #5-6P,
use with Item 31
29. Mini hose clamp, 7/32" diameter
30. Fuel return hose
31. Pipe thread sealant w/Teflon®, 8oz;
use w/ ALL threaded fittings
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MS1170
Front of vehicle
Engine rotated
180° for clarity
Fuel lift pump
(ref.)
Cab panel (ref.)
Front of vehicle
Model 3606 • Origin 10/99