See Figure 2-31. The 6.2L diesel engine front cover is a die cast of aluminum. This compares with the metal stamped front covers of most gasoline engines. This front cover:
• Covers timing gears and chain.
• Retains front crankshaft seal.
• Covers injection pump drive and driven gears.
Provides mounting for injection pump and drive components.
• Mounts T.D.C. timing pointer.
Sealed to cylinder case with anaerobic sealant to prevent oil leaks. Pt. #1052357 or 1052756 Provides mounting for water pump and backing plate.
There is a baffle in the upper half of the timing cover, and the purpose of baffle is, to keep the oil in the bottom of the cover area and not allow too large a quantity to accumulate in the gear and chain area.
This prevents oil aeration. Also the upper half of the cover contains the oil fill pipe where venting blow-by gases go to the CDR valve. This area must have a baffle to prevent oil from being drawn into the CDR valve.
It is necessary to maintain .040 in clearance between the baffle and the pump drive gear, or noise could result.
