DR ALL-TERRAIN Service Manual download pdf (Page 173)

100

101

COOLING SYSTEM 4-11

Water Pump

Water Pump Impeller Inspection

•

Visually inspect the impeller [A].

If the surface is corroded or the blades are damaged, re-

place the impeller.

Water Pump Leakage Inspection

•

Check the drainage catch tank [A] at the bottom of the

water pump body for coolant leakage.

If there is a coolant leak, the mechanical seal in the pump

could be damaged. Replace the mechanical seal with a

new one (see Mechanical Seal Replacement).

Mechanical Seal Replacement

•

Remove:

Water Pump Impeller (see Water Pump Impeller Re-

moval)

Alternator Cover (see Alternator Cover Removal in the

Electrical System chapter)

•

Take the bearing [A] out of the alternator cover, using the

bearing remover.

Special Tools - B earing Remover Shaft, 9 [B]: 57001-1265

Bearing Remover Head,

10 × 12 [C]:

57001-1266

•

Press out the mechanical seal [A] and oil seal [B] from

the inside of the alternator cover with the bearing driver

set [C].

Special Tool - Bearing Driver Set: 57001-1129

CAUTION

If either the mechanical seal, oil seal, or the ball

bearing is removed, make sure to replace all of them

simultaneously with a new one.

Be careful not to block the inspection hole with

the oil seal. If the inspection hole is blocked, the

coolant may pass through the oil seal and flow into

the crankcase.

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