5-101.bk Page 41 Friday, March 17, 2006 11:05 AM
200 ENGINE ASSEMBLY [212 CV] AUXILIARY DRIVESHAFT
Installation 앫 앫
Current production engines (effective February 27, 1992, serial No. 2E1233) feature an improved “fast ratio” auxiliary driveshaft assembly and oil pump assembly. This arrangement increases operating oil pressure by approximately 25% and creates a change in the oil pump speed. Do not mix ratios. Refer to Oil Pump assembly procedures in this section for part number information.
Inspection 1. Using standard shop procedures, thoroughly clean auxiliary driveshaft. 2. Inspect auxiliary driveshaft journals, gear teeth and splines for evidence of cracks, pitting, scoring or severe wear. Replace auxiliary driveshaft if any of these conditions exist. 3. Use magnaflux (PT7190 or equivalent) inspection procedures to detect cracks.
Fast Ratio, 1.5:1, part No. 453GC381M (18 teeth) Standard Ratio, 1.3:1, part No. 453GC379AM (17 teeth)
Refer to Figure 6-49.
Purchase the auxiliary driveshaft as an assembly only. Do not try to dismantle or rework as it may result in damage to the engine. It is possible to assemble an auxiliary driveshaft with a fast ratio oil pump drive gear (5) and a standard ratio oil pump drive. Do not mix a 1.5 fast ratio assembly with a 1.3 standard ratio assembly. Damage to the engine will result. 1. Lubricate front auxiliary driveshaft journal (2), rear auxiliary driveshaft journal (4) and shaft bearings (in cylinder block) with clean engine oil. 2. Install shaft (3) into the rear of auxiliary driveshaft housing. Take care when aligning shaft through rear bearing (1). 1
2 3 4
5 200362a
Figure 6-49 — Auxiliary Driveshaft Installation 1. Rear bearing 2. Auxiliary driveshaft front journal 3. Shaft
4. Auxiliary driveshaft rear journal 5. Oil pump drive gear
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