IMPORTANT: Before reinstalling cap in next step,
examine lower inside sealing surface in filler
neck to ensure that it is perfectly smooth and free
ofdebris.Also,inspectcamlockflangesonsides
of filler neck to be sure that they are not
bent.
!
WARNING
Allow engine to cool before removing pressure
cap. Sudden loss of pressure could cause hot
coolant to boil and discharge violently. After en-
gine has cooled, turn cap 1/4 turn to allow any
pressure to escape slowly, then push down and
turn cap all the way off.
1.
2.
3.
Carefully remove pressure cap from reservoir or
heat exchanger.
a
Wash cap with clean water to remove any depos-
its or debris from sealing surfaces.
Inspect gasket (if used) and rubber seal on cap
for tears, cuts, cracks or other signs of deteriora-
tion. Replace gasket, if damaged, or entire cap if
rubber seal is damaged.
a
c
b
b
72715
a - Inspect For Damage
b - Cam Lock Flange
6.
Reinstall cap on reservoir or heat exchanger.
72714
a - Rubber Seal (cap MUST BE Replaced If Damaged)
b - Gasket (Look For Cracks Under Gasket)
c - Locking Tabs (1 Hidden)
4.
5.
Check that locking tabs on cap are not bent or
damaged.
Using a cooling system pressure tester (similar to
one shown), test cap to be sure that it releases at
proper pressure and does not leak. (Refer to in-
structions which accompany tester for correct
test procedure.) Cap must relieve pressure at 16
PSI (110 kPa), and must hold rated pressure for
30
seconds without going below 11 PSI. Replace
cap if it fails to fall within these limits.
72716
Index
6B-6 - CLOSED COOLING SYSTEMS
90-823224--2 796
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you