Mitsubishi S12A2, Service Manual

Page: 263 / 354

10-21
Chapter 10 COOLING SYSTEM
2.3 Tension Pulley - Disassemble and Inspect (Water pump side PTA2 spec)
Tension Pulley - Disassemble and Inspect (Water pump side PTA2 spec)
2.3.1 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.
Belt groove wear
Replace
Rotation
Lip surface wear,
flaw, deterioration
Crack, flaw,
deflection of shaft,
oil hole clogging
PTA2 spec
1
2
3
4
5
6
7
8
9
Disassembling Sequence
1
Bearing cover
2
Snap ring
3
Ball bearing
4
Plain washer
5
Ball bearing
6
Tension pulley
7
Oil seal
8
Oil seal sleeve
9
Bracket
Item Standard value Standard value
Inside diameter of tension pulley bearing fit ø90 [3.54] 89.972 to 89.994 mm [3.5422 to 3.5431 in.]
Bearing
Outside diameter ø90 [3.54] 89.985 to 90.000 mm [3.5427 to 3.5433 in.]
Inside diameter ø40 [1.57] 39.988 to 40.000 mm [1.5743 to 1.5748 in.]
Outside diameter of bracket bearing fit ø40 [1.57] 39.984 to 40.000 mm [1.5742 to 1.5748 in.]