28
TK 57073-2-IM-EN
Installing Fuel Lines
Without Optional Fuel Heater
IIm
mp
po
orrtta
an
ntt:: Using the wrong fuel system fittings may void your engine warranty! All Thermo King supplied fuel line
fittings (except fuel line connector) are nickel plated brass for Precedent units.
•
D
DO
O N
NO
OT
T use fuel fittings (main body) made of brass, copper, zinc, zinc plated or galvanized steel where it would
make direct contact with flowing diesel fuel. Diesel fuel flowing through these types of fittings allows those metals
to leach into the fuel forming deposits on the injector tips which fouls them prematurely. Fuel fitting nuts,
compression sleeves, and fuel line connectors made of brass are acceptable because diesel fuel does not flow
across their surfaces.
•
D
DO
O N
NO
OT
T use PTFE (Polytetrafluoroethylene) thread sealing tape on fuel fittings in a Precedent unit. PTFE tape may
allow strands into the fuel system that could plug the tight clearance fuel injectors causing failures
D
DE
ET
TA
AIIL
L II - Fuel lines should be routed in a protective housing with no kinks or sharp bends. Rubber grommets must be
used when routing fuel lines through holes in metal.
D
DE
ET
TA
AIIL
L IIII - Secure all fuel lines with provided clamps.
D
DE
ET
TA
AIIL
L IIIIII - Both the fuel supply and the fuel return lines must be 25.4 (1.00 in.) from bottom of tank and the ends cut at
45 degree angle.
IIm
mp
po
orrtta
an
ntt:: The anchor tie and conduit provided in the installation kit are to be used to secure the fuel lines to the rear
of the frame.
1. From the rre
eg
gu
ulla
atto
orr // ssttrra
aiin
ne
err S
SU
UP
PP
PL
LY
Y fitting, install 3/8” fuel line and route through the plastic tube and down to
the fuel tank.
a. Install 3/8” pass through fitting onto the fuel tank S
SU
UP
PP
PL
LY
Y tube fitting.
b. Cut end of 3/8” fuel line at 45 degree and install sleeve and nut.
•
Tighten nut finger tight, followed by four (4) full turns with a wrench.
c. Insert fuel line into pass through fitting and into the tank until it bottoms out, then pull line up 25.4 mm (1.00 in.)
•
Tighten nut finger tight, followed by four (4) full turns with a wrench.
2. From the rre
eg
gu
ulla
atto
orr // ssttrra
aiin
ne
err R
RE
ET
TU
UR
RN
N fitting, install 3/8” fuel line and route through the plastic tube and down to
the fuel tank.
a. Install 3/8” pass through fitting onto the fuel tank R
RE
ET
TU
UR
RN
N tube fitting.
b. Cut end of fuel line at 45 degrees and install sleeve and nut.
•
Tighten nut finger tight, followed by four (4) full turns with a wrench.
c. Insert fuel line into pass through fitting and into the fuel tank until it bottoms out, then pull line up 25.4 mm (1.00
in.)
•
Tighten nut finger tight, followed by four (4) full turns with a wrench.
3. Remove plastic cap from the fuel tank air vent and point the outlet to the rear of the trailer.
IIm
mp
po
orrtta
an
ntt:: Do not allow the unit to run out of fuel during the engine break-in period. Add a sufficient amount of fuel
(approximately 20 gallons) to allow the unit to run for 8 to 12 hours during engine break-in and pre-delivery
procedures.
