29967 Mercury PIN, IMPELLER DRIVE

Note: In this removal procedure, the engine needs to be placed in the upside-down position. This will allow the lifters to remain in position after the camshaft is removed.
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.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g00569371Note: Ensure that the marks on the timing gears are in alignment. Align the "3" mark on fuel injection drive gear (A) with the "33" mark on idler gear (B). Make an alignment of the "22" mark on camshaft gear (C) with the "2" mark on idler gear (B). Align the "1" mark on crankshaft gear (D) with the "11" mark on idler gear (B). The No. 1 cylinder is at the top center position when these marks are in alignment.
Rotate the engine at 180 degrees in order to place the engine in the upside-down position. This will ease the removal of the camshaft.
Illustration 2 g00604521
Do not damage the lobes or the bearings when the camshaft is removed or installed.
Position camshaft gear (2) so that the gear's slots align from the top to the bottom. Remove two bolts (1) and the washers that hold thrust plate (3) (not shown).
Carefully remove the camshaft, the thrust plate and the camshaft gear as an assembly.
Remove the valve lifters. Refer to Disassembly and Assembly, "Lifter Group - Remove and Install". Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 8T-2998 Lubricant 1 Note: In this installation procedure, the engine needs to remain in the upside-down position in order to keep the lifters in position while the camshaft is installed.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: During installation, ensure that the camshaft is clean and lubricate all of the components with clean engine oil.
Install the valve lifters. Refer to Disassembly and Assembly, "Lifter Group - Remove and Install".
Illustration 3 g00569371Note: During installation, ensure that the marks on the timing gears are in alignment. Align the "3" mark on fuel injection drive gear (A) with the "33" mark on idler gear (B). Make an alignment of the "22" mark on camshaft gear (C) with the "2" mark on idler gear (B). Align the "1" mark on crankshaft gear (D) with the "11" mark on idler gear (B). The No. 1 cylinder is at the top center position when these marks are in alignment.
Apply Tooling (A) to the camshaft lobes. Carefully install the camshaft assembly into the original location in the cylinder block. Note: Caution must be used when the camshaft is installed in order to not damage the camshaft lobe or the camshaft bearings.
Illustration 4 g00604521
Position camshaft gear (2) so that the gear's slots align from the top to the bottom. Install bolts (1) and the washers that hold thrust plate (3). Tighten bolts (1) to a torque of 11 2 N m (97 18 lb in). End By:
Install the oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove and Install".
Install the rocker shaft assembly and the pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Install".
Install the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Install".