Toyota 4-Runner 1985 Repair Manual page 272

FUEL SYSTEM - Fuel pump
FU-29
1. CHECK INLET VALVE
Slock off the outlet pipes with your finger and check that
there is an increase in lever arm play and that the \ever arm
moves without tension.
2. CHECK OUTLET VALVE
Block off the inlet pipe with your finger and check that the
arm locks (does not operate with same amount of force
used in the precheck above).
NOTE: Never use more force than that used in the
precheck (This applies to checks 3 and 4 also).
3. CHECK DIAPHRAGM
Block off the inlet and outlet pipes and check that the pump
arm locks.
NOTE: If any of these checks are not as specified, the
caulking (sealing) of the body and upper casing is defective.
4. CHECK OIL SEAL
Block off the vent hole with your finger and check that the
pump arm locks.
INSTALLATION OF FUEL PUMP
(See page FU-28)
1. INSTALL FUEL PUMP WITH NEW GASKET
2. INSTALL TWO BOLTS
3. CONNECT THREE FUEL HOSES TO FUEL PUMP
4. CONNECT UPPER RADIATOR HOSE
5. FILL WITH COOLANT
Close the radiator drain cock and fill the radiator with a good
brand of ethylene-glycol coolant.
6. START ENGINE AND CHECK FOR LEAKS