Specifications

SEBU7858-03 145
Maintenance Section
Fuel System - Prime
Note: If you are
operating the machine under harsh
conditions or with the cab door open, it may be
necessary to clean the coils more often.
i02225246
Fuel Sy stem - Prime
SMCS Code: 1250-548
NOTICE
Care must be taken to ensure that fluids are contained
during performance of inspection, maintenance, test-
ing, adjusting and repair of the product. Be prepared to
collect the fluid with suitable containers before open-
ing any compartment or disassembling any compo-
nent containing fluids.
Refer to Special Publication, NENG2500, “Caterpillar
Tools and Shop Products Guide” for tools and supplies
suitable to collect and contain fluids on Caterpillar
products.
Dispose of all fluids according to local regulations and
mandates.
g01122464
Illustration 193
(1) Switch for the fuel priming p ump (tractor)
g00925670
Illustration 194
(2) Switch for the fuel priming pump (scraper)
Switch (1) is lo
cated on the right side of the tractor.
The fuel priming pump is on the right side of the
engine compartment underneath the hood.
Switch (2) is located on the right side of the scraper.
The fuel priming pump is on the right side of the
engine compa
rtment underneath the hood.
Thepumpisusedwhenthefollowingoperations
occur:
•
Changing the fuel filters
•
Priming the fuel system
•
Changing t
he fuel lines
•
Purging air from the fuel system
Note: Theenginestartswitchforthetractormust
be in the OFF position in order to prime the fuel
system. D
o not attempt to start the engine until the
fuel system is purged of air.
g01128777
Illustration 195
No
te: Usea4L(1USgal)containerinorderto
capture the fuel that will pass through the purge
valve. For capturing the fuel, the drain hose is routed
th
rough the bottom of the mounting plate for the
hydraulic tank.
1
.
O
pen the purge valve. Hold the drain hose to the
container in order to catch the fuel.