Service Manual Manual

7-7
G10-55A, G12-55A
Engine
9. Install previously removed nut and washer (6) to
isolator mount at top of radiator.
Note: Verify proper clearance between the fan and the
fan shroud (12).
10. Uncap and connect the previously labeled hydraulic
oil cooler hoses to the hydraulic oil cooler fittings (5).
11. Uncap and connect the previously labeled fuel
cooler hoses to the fuel cooler fittings (2).
12. Install previously removed drip shield plate (3).
13. Open surge tank cap and fill system complete to the
“Full Cold” level with coolant. Replace and tighten
surge tank cap. Refer to Section 2.5, “Fluid and
Lubricant Capacities,” for proper capacities.
14. Properly connect batteries.
15. Run engine to operating temperature. Visually check
for leaks with engine running. Check coolant level in
surge tank and fill, or drain, as necessary.
16. Close and secure engine cover.
17. Remove Do Not Operate Tags from both ignition key
switch and steering wheel.
7.3 ENGINE ELECTRICAL SYSTEM
The engine electrical system, including the starter,
alternator and primary wiring, is described in Section 9.5,
“Electrical System Schematics.”
7.4 FUEL SYSTEM
7.4.1 Diesel Fuel
Fuel represents a major portion of machine 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.
Note: 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
nozzles. Use ASTM #2 diesel fuel with a minimum Cetane
rating of 40. #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.
Inform the owner/operator of the machine to use #2
diesel fuel, unless ambient temperatures are below 32° F
(0° C). When temperatures are below 32° F (0° C), a
blend of #1 diesel and #2 diesel fuels (known as
“winterized” #2 diesel) may be used.
Note: #1 diesel fuel may be used, however, fuel
economy will be reduced.
If equipped for ULS, use ultra low-sulfur content fuel
with a cloud point (temperature at which wax crystals
form in diesel fuel) at least 10° below lowest expected
fuel temperature. Viscosity of fuel must be kept above 1.3
centistrokes to provide adequate fuel system lubrication.
If equipped for LS, use low-sulfur content fuel with a
cloud point (temperature at which wax crystals form in
diesel fuel) at least 10° below lowest expected fuel
temperature. Viscosity of fuel must be kept above 1.3
centistrokes to provide adequate fuel system lubrication.
MAL1510
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3
5
1
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