4056 Mercruiser CYLINDER BLOCK ASSEMBLY(INCLUDES BEARING CAPS)

Procedure for Replacing the 339-3161 Water Lines Gp
Remove the Original Parts
Note: Retain all removed parts until the installation procedure is complete, some parts may be reused.
Drain the cooling system to a level beneath the engine oil cooler.
Table 1
Required Parts to Remove from Engine    
Item     Part     Qty    
1     0L-1143 Bolt     1    
2     1A-2029 Bolts     2    
3     5G-3676 Grommets     2    
4     6V-3251 O-Ring Seals     3    
5     6V-5064 O-Ring Seal     1    
6     6V-6609 O-Ring Seal     1    
7     6V-8556 Nut     1    
8     6V-8716 Connector     1    
9     6V-8942 O-Ring Reducer     1    
10     6V-9837 Swivel Tees (1)     2    
11     6V-9839 Swivel Tee     1    
12     6V-9841 Connector     1    
13     7S-3916 Clips     3    
14     7S-3919 Clips     3    
15     9S-8752 Full Nut     2    
16     9X-6458 Hard Washers     4    
17     104-9054 Connector     1    
18     180-8424 O-Ring Seals     14    
19     250-2343 O-Ring Seals     5    
20     318-0820 Grommet     1    
21     339-3171 Tube As     1    
22     341-8719 Bracket     1    
23     345-6735 Bracket     1    
24     345-6736 Hose As     1    
25     345-6738 Tube As     1    
26     345-6739 Hose As     1    
27     345-6740 Hose As     1    
28     6V-9851 Elbow (1)     1    
( 1 ) Retain this part for the installation procedure.
Table 2
Line Group Parts that Stay Installed    
Item     Part     Qty    
1     0S-1590 Bolts     3    
2     6V-8640 Connector     1    
3     6V-8775 Face Seal Tee     1    
4     6V-9830 Cap As     1    
5     6V-9837 Swivel Tee     1    
6     7E-7547 Spacer     1    
7     7N-3368 Gasket     1    
8     8C-4424 Plugs     2    
9     8C-6871 Connectors     3    
10     8T-7492 Connectors     2    
11     9S-4190 O-Ring Plug     1    
12     9X-6458 Hard Washer     1    
13     144-2980 Housing     1    
14     216-7485 O-Ring Seals     4    
15     250-2343 O-Ring Seals     2    
16     339-3169 Hose As     1    
Illustration 1 g03403957
Illustration 2 g03403966
Remove the water lines group as shown in Illustration 1 and 2Installation Procedure
Table 3
Item     Qty     New Part    
1     2     6V-8639 Connectors    
2     2     180-8424 O-Ring Seals    
3     1     434-7490 Adapter    
4     1     5P-8924 Union    
5     2     6V-5064 O-Ring Seals