Toyota 4-Runner 1985 Repair Manual page 7

IN-6 INTRODUCTION - General Repair Instructions
I N0002
12. Observe the following precautions to avoid damage to the
parts:
(a) To disconnect vacuum hoses, pull on the end, not ~
middle of the hose.
(b) To pull apart electrical connectors, pull on the con-
nector itself, not the wires.
(c) Be careful not to drop electrical components, such as
sensors or relays. If they are dropped on a hard floor,
they should be replaced and not reused.
(d) When steam cleaning an engine, protect the distribu-
tor, coil, air filter, carburetor intake, air pump and VCV
from water.
(e)
Never use an impact wrench to remove or install ther-
mo switches or thermo sensors.
(f) When checking continuity at the wire connector, in-
sert the tester probe carefully to prevent terminals
from bending.
(g) When using a vacuum gauge, never force the hose
onto a connector that is too large. Use a step-down
adapter instead. Once the hose has been stretched,
it may leak.
13. Tag hoses before disconnecting them:
(a) When disconnecting vacuum hoses, use tags to iden-
tify how they should be reconnected.
(b) After completing a job, double check that the vac
um hoses are properly connected. A label under the
hood shows the proper layout.