CAUTION: DO NOT crimp or bend fuel line. Inspect
sealing cone at line; replace line if compression
exists.
NOTE: Care must be taken not to cross the fuel
return and supply lines during installation.
(2) Attach fuel flow supply and ret urn lines,
recrimpin g cla mps usin g specia l tool #9539 (Fig. 9).
CAUTION: NEVER slacken the thread connection.
Use a wrench to counterhold at threaded connec-
tion when slackening and tightening torque in order
to avoid also slackening the threaded connection
the next time.
CAUTION: DO NOT crimp or bend fuel line. Inspect
sealing cone at line; replace line if compression
exists.
(3) Attach high pressu re fuel line to pump.
Tighten t o 22N·m (194 lbs.in.) (Fig. 9).
(4) In st all the viscou s fa n.
(5) Connect nega tive bat tery cable.
(6) St art en gine, allow to run, turn engine off and
inspect for leaks (Refer to 14 - F UEL SYSTEM -
WARNING), (Refer to 14 - F UEL SYSTEM - DIAG-
NOSIS AND TESTING).
FU EL PU M P M ODU LE
DESCRIPTION
The fuel pump module is insta lled in th e top of the
fuel t ank (F ig. 10). The pump module conta ins the
following components:
• Electric fu el pum p (t ransfer, or lift pu mp)
• Fuel reservoir
• Fuel gau ge sen ding unit (fuel level sen sor )
• Fuel supply lin e connection
• Fuel return line con nection
Fuel is supplied t o the high-pressure fuel injection
pu mp by the low-pressur e fuel tr ansfer (lift) pump.
This electric fuel pum p is a ttach ed to the fuel pump
module and supplies approxima tely 165 liters/h our
(43.6 gallons/hou r). A low-pressu re fuel pump is not
attached to the engine.
REMOVAL
CAUTION: To prevent damage to the float rod, the
float and float rod must be removed from the pump
module. This step must be done before the pump
module is removed from the fuel tank.
(1) Drain an d remove fuel tan k. Refer to Fuel
Tank Remova l/Insta llation.
(2) Thorou ghly clean ar ea ar ound pum p m odu le at
top of ta nk.
(3) Disconn ect all fu el lines from pump module fit-
tings.
(4) The plastic fuel pump module locknut (lock-
ring) is th readed onto fuel ta nk. Insta ll Special Tool
#6856 to locknu t and remove lockn ut (Fig. 11). The
fuel pum p module will spring up slightly after lock-
nut is removed.
Fig. 10 TOP OF FUEL TANK
1 - Cooler Lines
2 - Top of Tank
3 - Expansion Tank
4 - Check Valves
5 - Check Valve
6 - Module Lock Ring
7 - Fuel Pump Module
14 - 18 FUEL DELIVERY VA
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