A/C Idle-Up Speed Inspection And Adjustment - Toyota 1HD-FT Repair Manual

EG
EG-20
ENGINE - ENGINE MECHANICAL
AIC IDLE-UP SPEED INSPECTION
AND ADJUSTMENT
_.-
. .
1. INITIAL CONDITIONS
(a) Engine at normal operating temperature
(b) Air cleaner installed
(c)
All
accessories switched OFF
(d) All
vacuum
lines properly connected
(8)
Valve clearance set correctly
(f) Injection timing set correctly
(gl
AfT:
Transmission in neutral position
(hi MfT:
Steering wheel at straight-ahead position
(i) Idle speed set correctly
til
MfT:
PS idle-up speed correctly
2. CONNECT TACHOMETER
Idle-Up Adjusting Screw
Singl.
Diephngm
Type (A/T)
3. ADJUST AIC IDLE-UP SPEED
(a) Start the engine.
(b) Turn the
Ale
switch ON. and set these position:
• Blower switch to HI
• Air intake control lever to RECIRCULATED AIR
• Air flow control lever to FACE
• Temperature control lever to COOL
(c) Check the idle-up speed.
Ale
idle-up speed:
175 - 850 rpm
(d) Loosen the lock nut. and adjust the idle - up setting
speed by turning the idle-up speed adjusting screw.
Lock the adjusting screw with the lock nut.
(e)
Turn the A/C switch OFF. then ON again. and recheck
the idle - up speed.
(f)
Turn the A/C switch OFF. and check that the rod end
of the idle-up actuator is not touching the idle-up
lever.