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ENGINE BLOCK Jeep Patriot I

2.0L Engine - Service Information 4 illustrations ~309 words

ENGINE BLOCK

  1. Clean cylinder block thoroughly and check all core hole plugs for evidence of leaking.
  2. Examine block and cylinder bores for cracks or fractures.
  3. Check block deck surfaces for flatness. Deck surface must be within service limit of 0.050 mm (0.002 in.).

Scheme 249

Scheme 249: CYLINDER BORE
Scheme 249: CYLINDER BORE

Note. The cylinder bores should be measured at normal room temperature, 21°C (70°F).

The cylinder walls should be checked for out-of-round and taper with Cylinder Indicator C119 or equivalent. Refer to Specifications . If the cylinder walls are badly scuffed or scored, the cylinder block should be replaced, and new pistons and rings fitted.

Measure the cylinder bore at three levels in directions A and B. Top measurement should be 10 mm (3/8 in.) down and bottom measurement should be 10 mm (3/8 in.) up from bottom of bore. Refer to Specifications .

Scheme 250

Scheme 250: STANDARD PROCEDURE - CONNECTING ROD - FITTING
Scheme 250: STANDARD PROCEDURE - CONNECTING ROD - FITTING

There are three different sizes of rod bearings available. Connecting rod bearing identification (4) can be found on the nose of the crankshaft (3). Use the table below for proper bearing selection.

CRANKSHAFT PIN DIAMETER GRADEDIMENSIONCONNECTING ROD BEARING CLASSIFICATIONCONNECTING ROD BEARING DIMENSION
148 mm1 (Black)1.5 mm
248 mm2 (No Color)1.5 mm
348 mm3 (Green)1.5 mm

CONNECTING ROD BEARING SELECTION

Scheme 251

Scheme 251
Scheme 251

Scheme 252

Scheme 252
Scheme 252
  1. For measuring connecting rod bearing clearance procedure and use of Plastigage, refer to «Standard Procedure»(ref-462490-S41963554222012040500000) . For bearing clearance, refer to «Specifications»(ref-462490-S21593874222012040500000) . NOTE: The rod bolts should not be reused.
  2. Before installing the NEW rod bolts the threads and under the bolt head should be oiled with clean engine oil.
  3. Install each bolt finger tight then alternately tighten each bolt to assemble the cap properly.
  4. Tighten the connecting rod bolts using the 2 step torque-turn method. Tighten according to the following values: CAUTION: Do not use a torque wrench for the second step. Tighten the bolts to 20 N.m (15 ft. lbs.). Tighten the connecting rod bolts an additional 90°.
  5. Using a feeler gauge, check connecting rod side clearance. For clearance specifications, refer to «Specifications»(ref-462490-S21593874222012040500000) .