Mitsubishi S12A2 - Tension Pulley - Disassemble and Inspect (Water Pump Side for Air Cooler)

10-18
Chapter 10 COOLING SYSTEM
2.2 Tension Pulley - Disassemble and Inspect (Water pump side for Air cooler)
Tension Pulley - Disassemble and Inspect (Water pump side for Aircooler)
2.2.1 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
8
9
Belt groove wear
Rotation
Crack, flaw,
deflection of shaft,
oil hole clogging
PTAW spec
Disassembling Sequence
1 Bolt
2 Thrust plate
3 Spacer
4 Snap ring
5 Ball bearing
6 Spacer
7 Ball bearing
8 Tension pulley
9 Bracket
Item Nominal value Standard value
Inside diameter of tension pulley bearing fit ø52 [2.05] 51.970 to 51.995 mm [2.0461 to 2.0470 in.]
Bearing
Outside diameter ø52 [2.05] 51.987 to 52.000 mm [2.0467 to 2.0472 in.]
Inside diameter ø20 [0.79] 19.988 to 20.000 mm [0.7869 to 0.7874 in.]
Outside diameter of bracket bearing fit ø20 [0.79] 19.987 to 20.000 mm [0.7869 to 0.7874 in.]