856613 Mercury HOSE

Introduction
This Special Instruction provides a parts list and an installation procedure for a new crankcase breather system. The breather is for the C27 engines that are used on 990H Large Wheel Loaders and 844H Large Wheel Dozers. The new system will reduce the carryover of oil from the current system by removing the breather that is located in the rear housing and relocating the breather in the valve covers.Required Parts
Table 1
Required Parts    
Part Number     Part Name     Quantity    
126-0559     Bolts     4    
146-7453     Hose     180 cm (71 inch)    
198-4777     Hard Washer     1    
223-1993     Covers     2    
224-7506     Isolation Seals     2    
227-5538     O-Ring Seal     1    
273-8703     Cover     1    
272-7013     Hose     2    
289-9139     Band Clamps     4    
292-5534     Elbows     2    
294-0536     Identification Plate     1    
295-6463     Tube As     1    
2N-8109     Clamps     2    
300-6911     Bracket As     1    
300-6912     Bracket As     1    
304-0455     Tube     1    
306-3060     Bracket As     1    
4D-7388     Clips     2    
4N-4668     Breather As     2    
4S-1962     Clip     1    
5M-3062     Bolt     1    
5P-7470     Clips     2    
5P-7471     Clips     2    
5P-7703     Grommets     2    
5P-8211     O-Ring Seals     2    
6V-3831     O-Ring Seals     2    
8T-4121     Hard Washers     2    
8T-4133     Nut     1    
8T-4136     Bolt     1    
8T-4223     Hard Washers     2    
8T-4896     Hard Washers     2    
8T-4956     Bolts     2    
9M-2904     Hose Clamps     4    Installation Procedure
Illustration 1 g01393639
Remove the side panel (1) and side panel (2) from the machine.
Illustration 2 g01393473
Panel (3) that is located underneath the catwalk can be removed in order to access to the rear of the engine.
Illustration 3 g01395997
Remove the valve covers (4) from the right side of the engine.
Illustration 4 g01399984
(4) 223-1993 Cover (5) 294-0536 Identification Plate (6) 4N-4668 Breather As (7) 6V-3831 O-Ring Seal (8) 2N-8109 Clamp (9) 126-0559 Bolt (10) 292-5534 Elbow (11) 5P-8211 O-Ring Seal (12) 224-7506 Isolation Seal
Illustration 5 g01400550
(12) 295-6463 Tube As
Assemble new valve covers that are shown in Illustration 4. Once the breather (6) has been assembled, install the breather on the engine.
Feed the breather tube (12) into position, but do not make any connections. The tube must remain loose until the new coolant line has been installed. You may also need to remove the exhaust pipe between the turbocharger and the muffler.
Drain the coolant into a suitable device that can hold 150 L (40 US gal) of fluid. The coolant will be reused once the lines have been changed. Refer to Operation and Maintenance Manual, SEBU7886, "Cooling System Coolant-Change" for information on draining and filling the cooling system.
Remove the coolant line that is between the tank and the water pump.