GEAR (27 & 25 Teeth) 5S6972 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 439-3938 Link Bracket 2 Start By:
Remove the valve cover base.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over any disconnected fuel system components.
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, PERJ1017, "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.
Drain the coolant from the cooling system. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change".
Illustration 1 g01053854
Remove bolts (1) and (2). Remove tube (3).
Illustration 2 g01053859
Remove four bolts (4) (not shown) from exhaust tube assembly and remove four bolts (5) (not shown) from inlet tube assembly.
Illustration 3 g01053860
Remove bolts (6). Use a suitable lifting device and Tooling (A) to remove cylinder head assembly (7). The weight of cylinder head assembly (7) is approximately 47 kg (104 lb). Remove gasket (8).
Illustration 4 g01053975
Remove seals (9) and (10), and O-ring seal (11) from the spacer plate.
Illustration 5 g01053977
Remove spacer plate (12) from the dowels in the cylinder block.
Illustration 6 g01053978
Remove gasket (13) from the dowels.
Illustration 7 g01053983
Remove the O-ring seal from dowel (14).Installation Procedure
Ensure that the spacer plate and the surface of the cylinder block are clean.
Illustration 8 g01053983
Install the O-ring seal on dowel (14).