Acura NSX 1991 Manual page 171

Main Menu
Inspection
1. Remove the timing belt (see page 6-15)
('94-'96).
2. Check that the water pump pulley turns counterclock-
wise.
3. Check for signs of seal leakage.
NOTE: A small amount of "weeping" from the bleed
hole is normal.
Turns counterclockwise
BLEED HOLE
Table of Contents
('91-'93) or
BLEED HOLE
Replacement
1. Remove the timing belt (see page
('94-'96).
2. Unscrew the bolts, then remove the water pump.
NOTE: Inspect and clean the 0-ring groove and
mating surface with the cylinder block.
SPECIAL BOLTS
6 x 1.0 mm: 7 BOLTS
12 N·m
(1 .2 kg-m, 9 Ib-ft)
Replace,
WATER PUMP
SPECIAL BOLTS
8 x 1.25 mm: 2 BOLTS
22 N·m (2.2 kg-m,
16 Ib-ft)
Replace.
3. Install the water pump in the reverse order of
removal.
NOTE:
Keep the 0-ring in position when installing.
Clean up spilled engine coolant.
6-15 ('91-'93) or
DOWEL PIN
0-RING
Replace.