Page 975 of 1496

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-27
A/C Switch InspectionS7RS0B7216014
• Check that there is continuity between terminal (1) and terminal (2) when A/C s witch is at ON position.
• Check that there is no continuity between terminal (1) and terminal (2) when A/C s witch is at OFF position.
If check result does not meet the above conditions,
replace HVAC control unit.
Compressor Relay InspectionS7RS0B7216015
1) Disconnect negative (–) cable from battery.
2) Remove compressor relay (1) from main fuse box.
3) Check that there is no continuity between terminal “c” and “d”. If there is continuity, replace relay.
4) Connect battery positive (+ ) terminal to terminal “b”
of relay and battery negative (–) terminal to terminal
“a” of relay, and then check continuity between
terminal “c” and “d”. If there is no continuity, replace
relay.
Compressor Drive Belt Inspection and
Adjustment
S7RS0B7216016
Inspection
• Check compressor drive belt (1) for wear, crack, deformation and cleanliness. If any defect is found,
replace the belt with new one referring to
“Compressor Drive Belt Re moval and Installation”.
• Check compressor drive belt tension by measuring how much it deflects when pushed intermediate point
between magnet clutch pulley (6) and crankshaft
pulley (3) with about 100 N (10 kg) force after rotating
crankshaft pulley 360 °. If belt tension is out of
specification, adjust belt tension referring to
“Adjustment”.
Compressor drive belt tension
“a”
: 7 – 8mm (0.28 – 0.31 in.)
NOTE
When replacing drive belt, adjust drive belt
tension to the following specification.
New compressor dr ive belt tension “a”
: 6 – 7mm (0.24 – 0.28 in.)
Adjustment 1) Loosen tension pulley nut (4).
2) Adjust belt tension by ti ghten or loosen tension
pulley adjusting bolt (5).
3) Tighten tension pulley nut.
4) Rotate the crankshaft pulley 360 °, and then recheck
belt tension.
1 2
I4RS0B720013-01
"d"
"b" "a"
"c"
1
I4RS0B720014-01
2. Tension pulley
I4RS0A720033-01
Page 976 of 1496

Downloaded from www.Manualslib.com manuals search engine 7B-28 Air Conditioning System: Manual Type
Compressor Drive Belt Removal and
Installation
S7RS0B7216017
Removal1) Loosen tension pulley nut (1).
2) Loosen belt tension by loosening tension pulley adjusting bolt (2).
3) Remove compressor drive belt (3).
Installation
Reverse removal procedure noting the following
instruction.
• Adjust belt tension referring to “Compressor Drive Belt Inspection and Adjustment”.
Compressor Assembly Removal and
Installation
S7RS0B7216018
Removal
1) Run engine at idle speed with A/C ON for 10 minutes.
2) Stop the engine.
3) Disconnect negative (–) cable from battery.
4) Recover refrigerant fr om the A/C system with
recovery and recycling equipment referring to
“Recovery” in “Operation Procedure for Refrigerant
Charge”.
5) Remove compressor drive belt referring to “Compressor Drive Belt Re moval and Installation”.
6) Remove right side engine under cover.
7) Disconnect magnet clutch lead wire coupler (1).
8) Disconnect discharge hose (2) and suction hose (3) from compressor (4).
NOTE
Cap open fittings immediately to keep
moisture out of the system.
9) Remove compressor mounting bolts (1), and then remove compressor (2 ) from its bracket.
Installation
Reverse removal procedure noting the following
instructions.
• If compressor is replaced, pour new compressor oil referring to “Replenishi ng Compressor Oil” in
“Operation Procedure for Refrigerant Charge”.
• Evacuate and charge the A/C system referring to “Evacuation” and “Charge” in “Operation Procedure
for Refrigerant Charge”.
• Adjust drive belt tension referring to “Compressor Drive Belt Inspecti on and Adjustment”.
I4RS0A720034-01
3
4 2
1
I7RS0A721009-01
1
1 2
I7RS0A721010-02
Page 979 of 1496

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-31
4) Install magnet clutch lead wire clamp.
5) Install magnet clutch pulley (1).
6) Install new circlip (2) directing chamfer side (3) upward.
Special tool
(B): 09900–06107
7) Tighten armature plate bolt to specified torque. Tightening torque
Armature plate bolt (a): 15 N·m (1.5 kgf-m, 11.0
lb-ft)
Special tool
(A): 09991–06310
8) Adjust clearance between magnet clutch plate (1) and magnet clutch pulley by putting shim(s) on
compressor shaft. To measure the clearance,
perform the following steps.
a) Put compressor in a vise (2).
b) Set dial gauge (3) on magnet clutch plate, and then adjust its pointer at 0.
c) Connect battery positive terminal (+) to magnet clutch coil lead wire.
d) Connect battery negative terminal (–) to compressor body assemb ly. (At this point,
magnet clutch plate and magnet clutch pulley are
kept in contact.) e) Disconnect battery negative terminal (–) to
compressor body assembly. (At this point,
magnet clutch plate and magnet clutch pulley are
not in contact.)
f) Read stroke of magnet clutch plate from dial gauge by performing step d) and e) repeatedly.
(Stroke of magnet clutch plate is clearance
between magnet clutch plate and magnet clutch
pulley.)
Standard clearance between magnet clutch plate
and magnet clutch plate
0.3 – 0.5 mm (0.012 – 0.020 in.)
Relief Valve InspectionS7RS0B7216028
By using special tool, chec k if there is refrigerant
leakage. If there is refrigerant leakage, replace the relief
valve.
Special tool
(A): 09990–86012
1
32 (B)
I4RS0A720044-01
(a)
(A)
I4RS0A720045-01
21
3
I4RS0A720046-01
(A)
I5RS0C721014-01