Mitsubishi S12A2 - Cooling System Disassembly, Inspection, and Assembly

10-15
Chapter 10 COOLING SYSTEM
2. Cooling System - Disassemble, Inspect and Assemble
2.1 Tension Pulley - Disassemble and Inspect (Water pump side)
Tension Pulley - Disassemble and Inspect (Water pump side)
2.1.1 Tension Pulley - Inspect
Measure the bearing fit in tension pulley and on shaft. If abnormal wear or damage is shown, replace the bearing, pulley or ten-
sion bracket.
1
2
3
4
5
6
7
Belt groove wear
Rotation
Crack, flaw,
deflection of shaft,
oil hole clogging
8
Disassembling Sequence
1 Bolt
2 Thrust plate
3 Snap ring
4 Ball bearing
5 Spacer
6 Ball bearing
7 Tension pulley
8 Bracket
Item Standard value Standard value
Inside diameter of tension pulley bearing fit ø80 [3.15] 79.961 to 79.991 mm [3.1480 to 3.1492 in.]
Bearing
Outside diameter ø80 [3.15] 79.987 to 80.000 mm [3.1490 to 3.1495 in.]
Inside diameter ø35 [1.38] 34.988 to 35.000 mm [1.3774 to 1.3779 in.]
Outside diameter of bracket bearing fit ø35 [1.38] 34.984 to 35.000 mm [1.3773 to 1.3779 in.]