825009 25 Mariner BOLT

Table 1
Required Tools
Tool Part Number Part Description Qty
A(1) 177-8001 Sleeve 1
B 177-8002 Adapter 1
C 6L-4697 Bolts 3
D - Loctite LB 8028 Camshaft Lube -
F - Loctite 243 Threadlocker -
(1) Part of 177-8003 Engine Tool GroupStart By:
Remove the camshaft gear.Note: This is an optional procedure to remove the camshaft. The preceding tool list shows the required tooling for removing the camshaft from the front of the engine or the rear of the engine.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Do not turn the crankshaft or the camshaft while the camshaft gear is removed. If the front gear group is not correctly timed during installation, interference can occur between the pistons and the valves, resulting in damage to the engine.
Illustration 1 g01056681
Remove bolts (2) and thrust plate (1).
Illustration 2 g01071487
Remove sealing plate (3) from the front housing. Remove adapter assembly (4) from the crankshaft.
Illustration 3 g01056684
Remove O-ring seals (5) and (6) from sealing plate (3).
Illustration 4 g01056675
Remove flat head screws (9) and cover (10). Remove the O-ring seal from the cover.
Care must be used when removing or installing the camshaft. Do not damage the finished surfaces of the camshaft or the camshaft bearings.
To remove the camshaft from the rear of the engine, go to Step 6 through Step 9. To remove the camshaft from the front of the engine, go to Step 10 through Step 13.
Illustration 5 g01056714
Removal of the camshaft from the rear of the engine
To remove the camshaft from the rear of the engine, install Tooling (B) on the front of camshaft (8) with Tooling (C).Note: Carefully align Tooling (B) with the end of camshaft (8). If the adapter and the camshaft are not aligned, the camshaft may not be removed. The adapter and camshaft bearing will interfere.
Install Tooling (A) on Tooling (B).
Carefully slide the camshaft to the rear of the engine for removal. Use two technicians to remove the camshaft. Keep the camshaft level while the camshaft is being removed from the cylinder head. The weight of the camshaft is approximately 39 kg (86 lb).Note: Rotate the camshaft during removal. Rotating the camshaft will prevent the camshaft from binding in the camshaft bearings.
Remove Tooling (A), Tooling (B), and Tooling (C) from the camshaft.
Illustration 6 g01056717
Remove the camshaft from the front of the engine.
To remove the camshaft from the front of the engine, install Tooling (B) on the rear of camshaft (8) with Tooling (C).Note: Carefully align Tooling (B) with the end of camshaft (8). If the adapter and the camshaft are not aligned, the camshaft may not be removed. The adapter and camshaft bearing will interfere.
Install Tooling (A) on Tooling (B).
Carefully slide the camshaft to the front of the engine for removal. Use two technicians to remove the camshaft. Keep the camshaft level while the camshaft is being removed from the cylinder head. The weight of the camshaft is approximately 39 kg (86 lb).
Remove Tooling (A), Tooling (B), and Tooling (C) from the camshaft.Alternative Installation Procedure
Note: This is an optional procedure to install the camshaft. The preceding tool list shows the required tooling for installing the camshaft from the front of the engine or the rear of the engine.