Water Pump Assembly
Contents
1. 2001 SERVICE MANUAL NUMBER 14 l 90 818177 3 APRIL 2001 GEAR HOUSING STANDARD ROTATION Assemble the water pump face seal to a position approximately 1 2 of the way down the drive shaft Assemble the water pump face seal setting tool over the drive shaft and push the seal down onto the water pump with the tool while pulling up on the drive shaft Re move the tool from the drive shaft AE DA 7050 mi 0 0 70708 a Water Pump Face Seal b Water Pump Face Seal Setting Tool Lightly lubricate the O rings in the water tube coupling with Quicksilver 2 4 C Marine Lu bricant with Teflon Assemble the water tube sleeve into the water tube coupling Assemble the water tube coupling assembly to the water pump ensuring that the O rings are not damaged during assembly Page 3B 77 GEAR HOUSING STANDARD ROTATION SERVICE MANUAL NUMBER 14 Joining Drive Shaft Housing Gear Housing 1 Lubricate the end of the water tube in the drive shaft housing and the splines of the drive shaft with Quicksilver 2 4 C Marine Lubricant with Teflon NOTE The aluminum dam has been changed to a rubber filler plug If the aluminum water pump dam in the gear housing has become corroded or damaged it can be replaced with the rubber filler plug IMPORTANT Ensure that the drain hole of the aluminum water pump dam is not clogged with any foreign material as damage may occur if it is 71436 a Aluminum Dam b Rubber Fil2. MERCURY MerCruiser information for this file is taken from OEM Service Manual Number 14 Raw Water Pump service and Repair Alpha I Gen II SERVICE MANUAL NUMBER 14 GEAR HOUSING STANDARD ROTATION Drive Shaft Housing Gear Housing Separation 1 Clamp the unit on the gear housing anti ventilation plate in a suitable fixture 2 Tilt the unit at a 45 degree angle remove the oil fill drain plug then remove the drive shaft housing vent screw Allow the drive unit to drain completely D 22101 22103 a Fill Drain Screw b Sealing Washer Or O ring g e r E E i 70131 a Vent Screw b Sealing Washer Or O ring 90 818177 3 APRIL 2001 Page 3B 13 GEAR HOUSING STANDARD ROTATION SERVICE MANUAL NUMBER 14 3 Mark the trim tab position if equipped with a piece of tape on the gear housing and re move the trim tab or anodic plate if equipped uD gt E I 70116 a Trim Tab b Extension With 1 2 in Socket 4 Remove the bolts nuts and washers from the port and starboard sides of the unit 5 Remove the aft screw in the trim tab well of the gear housing 6 Remove the nut from the forward end of the unit 70117 a Nuts Bolts And Washers b Nut c Screw 7 Lift the drive shaft housing straight off of the gear case and set aside Page 3B 14 90 818177 3 APRIL 2001 GEAR HOUSING STANDARD ROTATION SERVICE MANUAL NUMBER 14 Gear Housing and Component Disassembly Water Pu
3. he blades are in this condition 5 Inspect the water pump face plate and the water pump interior for roughness and or grooves Replace the appropriate components if any are found 70609 a Water Pump Face Plate b Water Pump Body 90 818177 3 APRIL 2001 Page 3B 17 SERVICE MANUAL NUMBER 14 GEAR HOUSING STANDARD ROTATION Water Pump Assembly Installation NOTE The aluminum dam has been changed to a rubber filler plug If the aluminum water pump dam in the gear housing has become corroded or damaged it can be replaced with the rubber filler plug IMPORTANT The gaskets face plate hole pattern is not symmetrical If the holes of the gaskets face plate do not align with the screw holes of the gear case and or each other one or more of the parts is upside down Determine which part s is are upside down and turn the appropriate part s over 1 Apply Quicksilver Perfect Seal to the small hole gasket Place the small hole gasket the face plate and the large hole gasket onto the gear case NOTE Add Quicksilver Perfect Seal to the gasket to seal it and prevent water from seeping into the gear housing 70720 a Small Hole Gasket b Face Plate c Large Hole Gasket 2 Place a small amount of Quicksilver 2 4 C Marine Lubricant with Teflon on the flat sur face of the impeller key and assemble the key onto the drive shaft keyway IMPORTANT When using an impeller whose blades have taken a set face the curl of the b
4. lades in a counterclockwise direction DO NOT install the impeller with its blades oriented in a reversed direction from original rotation or premature impeller failure will occur 90 818177 3 APRIL 2001 Page 3B 75 GEAR HOUSING STANDARD ROTATION SERVICE MANUAL NUMBER 14 3 Assemble the water pump impeller onto the drive shaft and down over the key a An _ q A 70721 a Water Pump Impeller b Water Pump Impeller Key 4 On early models install the two 2 water pump locating pins through the gaskets and face plate 5 Position the water pump body over the drive shaft and water pump locating pins Rotate the drive shaft in a clockwise direction while pushing down on the water pump body to ease the water pump over the impeller blades AD h i gt lt i 2 8 SS eee 70722 a Water Pump Body b Water Pump Alignment Pins 91 821571A1 c Drive Shaft Turn Clockwise While Installing Water Pump Body NOTE Apply Quicksilver Perfect Seal to all four 4 screw threads before installation 6 Hand start two 2 fasteners into the water pump assembly and remove the water pump locating pins Assemble the remaining two 2 fasteners Run all fasteners down and torque to 60 lb in 7 9 Nm IMPORTANT The water pump face seal must be installed as outlined below Improp erly installing the water pump face seal may result in premature failure of the unit Page 3B 76 90 818177 3 APRIL
5. ler Plug c Drain Hole 2 Units with an aluminum dam installed in them will require a bead of Permatex Ultra Blue Silicone Sealant along the top of the water pump dam as shown If rubber filler plug is present it is not necessary to use this sealant 3 To replace the aluminum dam if it has been removed and undamaged place a bead of Permatex Ultra Blue Silicone Sealant down both sides of it Page 3B 78 90 818177 3 APRIL 2001 SERVICE MANUAL NUMBER 14 GEAR HOUSING STANDARD ROTATION 4 Ensure that the water pump dam in the drive shaft housing is present and installed cor rectly Ensure that all parts are present on the gear housing and the drive shaft housing 70710 a Drive Shaft Splines b Sealant Aluminum Dam Only c Trim Tab Bolt Insert In Aft Hole d Quad Ring 5 Position the drive shaft housing straight above the gear housing Align the water tube sleeve with the water tube and the drive shaft with the upper drive gear and assemble the drive shaft housing to the gear housing It may be necessary to rotate the propeller shaft or the u joint to align the drive shaft splines with the upper drive gear splines Assemble the front nut to the front stud of the unit Assemble the aft screw and star washer into the forward hole in the trim tab well of the gear housing 8 Assemble the bolts nuts and washers to the port and starboard sides of the unit Torque to 35 Ib ft 47 5 Nm 70117 a Nuts Bolts Washe
6. mp Subassembly REMOVAL Remove the water seal water tube coupling assembly and the water pump screws 70486 a Water Tube Assembly b Water Pump Screws c Water Seal Carefully slide the water pump straight up off of the drive shaft It may be necessary to 2 gently pry up on its mounting flanges with a couple of screwdrivers 10487 a Water Pump Body b Screwdrivers 90 818177 3 APRIL 2001 Page 3B 15 GEAR HOUSING STANDARD ROTATION SERVICE MANUAL NUMBER 14 3 Remove the impeller impeller key the face plate and gaskets discard the gaskets 70605 a Impeller b Impeller Key c Water Pump Face Plate and Gaskets One On Each Side Of The Face Plate WATER PUMP ASSEMBLY COMPONENT INSPECTION 1 Inspect the water tube coupling assembly for wear or damage If necessary replace the worn or damaged components Check the top and bottom inside O ring seals for wear 70613 a Water Tube Adaptor b O ring Seals 2 2 Inspect the water pump impeller for wear on the end top and bottom of the impeller blades Replace the impeller if this condition is found Page 3B 16 90 818177 3 APRIL 2001 SERVICE MANUAL NUMBER 14 GEAR HOUSING STANDARD ROTATION 3 Inspect for proper bonding between the hub and the impeller Replace the impeller if im proper bonding is found a 70500 a Impeller b Hub 4 Inspect the impeller blades to see if they are hard or deformed Replace the impeller if t
7. rs b Nut c Screw 9 Assemble the trim tab and align it to the mark made previously on the gear housing Torque the screw to 23 lb ft 31 Nm 90 818177 3 APRIL 2001 Page 3B 79 GEAR HOUSING STANDARD ROTATION SERVICE MANUAL NUMBER 14 10 Position or lower drive unit 0 anti ventilation plate is level 11 Refill dive unit with gear lube Refer to section 1B Parts Included in OEM Impeller Kit Impeller O Drain amp Fill Plug Gaskets Quad Ring Face Seal oo Face Seal y Installation Tool Pape 38 50 0 818177 3 APRIL 2001
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