Peterbilt 365 - Frame

Start procedure with engine off. Cover any
electrical equipment and wiring that might
get soaked with fuel; diesel fuel may
permanently damage electrical insulation.
To expel air from density-type strainer
elements, soak them in clean fuel before
installing them. Lubricate new O-rings with
clean fuel to ensure a positive seal.
1. Disconnect clip-type electrical
connections from bowl bottom:
a. Disconnect water in fuel (WIF)
sensor from wire bundle.
b. Disconnect electrical heater
sensor from wire bundle.
2. Using bowl wrench, loosen filter
bowl and lower at least 2 inches.
Take care not to damage bowl
sensors on surrounding
components.
3. Slowly remove bowl and filter from
upper filter assembly.
4. Remove the filter element and both
upper and lower O-rings.
5. Install new filter element:
a. Install new upper and lower
O-rings.
b. Install new fuel filter element.
6. Reconnect clip-type electrical
connections to bowl bottom:
a. Reconnect water in fuel (WIF)
sensor to wire bundle.
b. Reconnect electrical heater
sensor to wire bundle.
7. If your vehicle has a fuel blending
valve, turn valve to “Prime.”
8. Allow the electric priming pump to
prime assembly.
9. Start the vehicle.
10. If your vehicle has a fuel blending
valve, turn valve to “Run.”
Observe fuel filter assembly for leaks.
Dispose of old filter element and O-rings
properly.
Fuel Tank
Check the strap tightness: tighten to proper
torque value as required; aluminum tank -
30 lb-ft (41 N·m) cylindrical steel tank - 8
lb-ft (11 N·m.)
Frame
WARNING
DO NOT cut, splice or weld frame rails
or drill through the top or bottom flang-
es of the rails. These operations could
affect frame rail strength leading to a
failure resulting in an accident. Rail
failures resulting from such modifica-
tions are not warrantable. Failure to
comply may result in property damage,
personal injury, or death.
WARNING
Frame welding is NOT recommended.
The high heat of welding nullifies the
special heat treatment of the rails,
greatly reducing the tensile strength of
the frame rail. If a frame member be-
comes cracked from overloading, fati-
gue, surface damage, or a collision,
the only permanent repair is to replace
the damaged frame member with a
new part.
Emergency Welding
In an emergency, a temporary repair may
be performed. Observe the following
precautions to protect electronic systems
during welding operations. Emergency
welding procedures are further explained in
the maintenance manuals. Please refer to
MAINTENANCE - Frame
250 Y53-6076-1D1 (09/20)
5