Service manual

Electrical System
10-7
Model 3606 • Origin 10/99
Legend for Engine Harness
1. Engine Harness
2. Conduit, 3/4” diameter x 10” long
3. Hex-lock Elastic Nut, 3/8-16
4. Tube Clip
5. Hex-lock Elastic Nut, 1/2-13
6. Flat Washer, 3/8”
7. Hex Locknut
8. Battery Ground Cable
9. Positive (+) Battery Cable,
w/protective cover
10. Hex-head Capscrew,
3/8-16 x 9-11/2”
11. Battery Hold-down Strip
12. Battery, 12 Volt, 1000 CCA
13. Negative (-) Battery Cable,
w/protective cover
14. Transmission Temperature Switch,
250° F (121° C)
15. Engine Water Temperature Switch
16. Engine Oil Pressure Switch
17. Hex Nut, 1/4-20
18. Lockwasher, 1/2”
19. Hex Nut, #10-32
20. Hex-head Capscrew, 1/4-20 x 3/4”
21. Starter Relay
22. Hex-lock Elastic Nut, 1/4-20
23. Maintenance Reset Switch
24. Fuel Shut-off Solenoid
25. Perkins Cold-start Temperature Switch
10.1 SERVICE WARNINGS
General
Battery
WARNING: DO NOT disconnect any wiring
without first stopping the engine, turning all
electrical switches to the OFF position and dis-
connecting the battery ground cable from the
battery.
WARNING: DO NOT cause a short circuit by
connecting leads to incorrect terminals. Always
identify a lead and its correct terminal. A short
circuit or wrong connection creating reverse
polarity will immediately and permanently ruin
transistors and diodes within the electrical sys-
tem.
WARNING: DO NOT momentarily or "flash"
connect a terminal to check for current flow. No
matter how brief the contact, the transistors
may be ruined.
WARNING: Wear safety glasses when work-
ing near the battery.
WARNING: All lead-acid batteries generate
hydrogen gas, which is highly flammable. If
ignited by a spark or flame, the gas may
explode violently, causing spraying of acid,
fragmentation of the battery, and possible
severe personal injuries, particularly to the
eyes.
WARNING: Avoid battery acid. Battery acid
can cause chemical burns or other serious
injury. In case of contact with battery acid, flush
immediately with water.
WARNING: Charge the battery in a well-venti-
lated area only. Always turn battery chargers
OFF before connecting to or disconnecting
from a battery.
WARNING: DO NOT disconnect the battery
while the engine is running. This will cause a
voltage surge in the alternator charging system
that will immediately ruin the diodes or transis-
tors.
WARNING: DO NOT connect a battery into
the system without checking for correct polarity
and voltage.