12578T Mercury ROLLER BEARING

Table 1
Required Tools
Tool Part Number Part Description Qty
A 8H-0663 Bearing Puller 1
5F-7345 Puller 1
126-7183 Crossblock 1
126-7177 Puller Leg 2
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
If necessary, remove the OEM driven equipment from the auxiliary drive.
Illustration 1 g02418256
Illustration 2 g02418257
If OEM driven equipment has not been installed to the auxiliary drive, remove bolts (1). Remove cover plate (2) and remove gasket (3) (not shown).
Remove allen head screws (4) from accessory drive housing (5). Remove allen head screw (6) from accessory drive housing (5).
Remove accessory drive housing (5) from the front housing.
Remove gasket (7) from accessory drive housing (5).
Illustration 3 g02646290
If necessary, follow Step 6.a through Step 6.c in order to disassemble the accessory drive.
Remove circlip (11) and circlip (12) from accessory drive housing (5).
Place accessory drive housing (5) onto a suitable support. Press the assembly of gear (9) and bearing (10) out of accessory drive housing (5). Use Tooling (A) in order to remove bearing (10) from gear (9).
Press bearing (8) out of accessory drive housing (5). Note: Note the position of the bearing in the accessory drive housing before removal.Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
B 7M-7456 Bearing Mount Compound -
C 9S-3263 Thread Lock Compound 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 4 g02050614
Illustration 5 g02052174
Illustration 6 g02052273
If necessary, follow Step 1.a through Step 1.f in order to assemble the accessory drive.
Inspect the condition of the teeth and the splines of gear (9) for wear and damage. Inspect bearing (8), bearing (10), circlip (11) and circlip (12). Inspect the front housing for wear and damage. Replace any components that are worn or damaged.
Apply a small continuous bead of Tooling (B) to outer Surface (X) of bearing (8). Place the accessory drive housing on a suitable support. Press on the outer race of bearing (8) until the bearing is in the correct position within the accessory drive housing (5). Remove any excess bearing mount compound.
Apply a small continuous bead of Tooling (B) to inner Surface (Y) of bearing (10). Place the inner race of bearing (10) onto a suitable support. Press the shaft of gear (9) into bearing (10) until the shoulder of the gear is against the bearing. Remove any excess bearing mount compound.
Install circlip (11) into the groove in gear (9).
Apply a small continuous bead of Tooling (B) to the outer Surface (Z) of bearing (10). Place accessory drive housing (5) on a suitable support. Ensure that the shaft of gear (9) is correctly aligned with bearing (8). Press the assembly of the gear into the accessory drive housing. Remove any excess bearing mount compound.
Install circlip (12) into the groove in accessory drive housing (5). Ensure that circlip (12) is correctly positioned in the groove.
Inspect the bore in the front