SkyTrak 8042 Service Manual - Manual (Page 137)

7-5 6036, 6042, 8042, 10042, 10054
Engine - Cummins QSB3.3T/QSB4.5T
2. Uncap and connect the all the previously labeled
hoses and tubes to their appropriate locations.
3. Install the battery or batteries. Connect the battery
positive (+) and negative (-) cables to the
appropriate battery terminals.
4. Open the radiator cap (1) and fill the radiator
completely with coolant. Replace and tighten the
radiator cap. Refer to Section 2.4, “Fluid and
Lubricant Capacities,” for proper capacities.
5. Run the engine to operating temperature. Visually
check for leaks with the engine running. Check the
coolant level in the overflow bottle and fill, or drain,
as necessary.
6. Close and secure the side and rear engine doors.
7.5 ENGINE ELECTRICAL SYSTEM
The engine electrical system, including the starter,
alternator and primary wiring, is described in Section 9,
“Electrical System.”
7.6 FUEL SYSTEM
7.6.1 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.
Use a low-sulfur content fuel with a cloud point (the
temperature at which wax crystals form in diesel fuel) at
least 10° below the lowest expected fuel temperature.
The viscosity of the fuel must be kept above
1.3 centistrokes to provide adequate fuel system
lubrication.
7.6.2 Fuel/Hydraulic Oil Tank
Note: The fuel/hydraulic oil tank is part of a one piece unit
divided into a two compartment (tank) unit. It is located on
the right side of the machine, across from the operator cab. If
it is determined that either the fuel of hydraulic oil tank must
be removed, both the fuel and hydraulic oil must be drained
before tank removal. Always dispose of hydraulic oil or fuel
properly.
a. Fuel/Hydraulic OIl Tank Removal
1. Park the machine on a firm, level surface, level the
machine, fully retract the boom, lower the boom,
place the travel select lever in the (N) NEUTRAL
position, engage the parking brake, and shut the
engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and steering wheel, stating that the machine
should not be operated.
3. Open the rear door. Allow the system fluids to cool.
4. Properly disconnect the battery.
Note: If replacing the tank, remove all internal and
external components from the old tank, and retain for
use on the replacement tank.
Note: Have a dry chemical (Class B) fire extinguisher
near the work area.
5. Remove the fuel/hydraulic oil tank top cover.
6. Remove the two frame top covers from above the
frame.
WARNING
NEVER drain or store fuel in an open container due to
the possibility of explosion or fire. Discard the fuel in
an approved manner.