This repair manual covers 1987-2017 Jeep Wrangler models, with gasoline engines, including 2.4L and 2.5L inline four-cylinder, 4.0L and 4.2L inline six-cylinder, and 3.8L V6 engines. Note: This manual does not provide diesel engine information.
Book Excerpt: 1987-2017 Jeep Wrangler Repair Manual MAIN AND CONNECTING ROD BEARINGS: INSPECTION Refer to illustration 19.1
Subject: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017TABLE of CONTENTS:
Introductory pages
About this manual | Introduction to the Jeep Wrangler | Vehicle identification numbers | Buying parts | Maintenance techniques, tools and working facilities | Jacking and towing | Booster battery (jump) starting | Automotive chemicals and lubricants | Conversion factors | Fraction/decimal/millimeter equivalents | Safety first! | Troubleshooting
Book Excerpt: 1987-2017 Jeep Wrangler Repair Manual MAIN AND CONNECTING ROD BEARINGS: INSPECTION Refer to illustration 19.1
- Even though the main and connecting rod bearings should be replaced with new ones during the engine overhaul, the old bearings should be retained for close examination, as they may reveal valuable information about the condition of the engine (see illustration).
- Bearing failure occurs because of lack of lubrication, the presence of dirt or other foreign particles, overloading the engine and corrosion. Regardless of the cause of bearing failure, it must be corrected before the engine is reassembled to prevent it from happening again.
- When examining the bearings, remove them from the engine block, the main bearing caps, the connecting rods and the rod caps and lay them out on a clean surface in the same general position as their location in the engine. This will enable you to match any bearing problems with the corresponding crankshaft journal.
Subject: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
About this manual | Introduction to the Jeep Wrangler | Vehicle identification numbers | Buying parts | Maintenance techniques, tools and working facilities | Jacking and towing | Booster battery (jump) starting | Automotive chemicals and lubricants | Conversion factors | Fraction/decimal/millimeter equivalents | Safety first! | Troubleshooting
- Tune-up and routine maintenance
- 2.4L four-cylinder engines
- 2.5L four-cylinder engines
- 4.0L and 4.2L six-cylinder engines
- 3.8L V6 engine
- 3.6L V6 engine
- General engine overhaul procedures
- Cooling heating and air conditioning systems
- Fuel and exhaust systems
- Engine electrical systems
- Emissions control systems
- Manual transmission
- Automatic transmission
- Transfer case
- Clutch and drivetrain
- Brakes, ABS
- Suspension and steering systems
- Body
- Chassis electrical system
- Wiring diagrams
Above: Cesar Rivera of Montebello, Calif., enjoys putting his 2008 Jeep Wrangler X between a rock and a hard place more often than not. Here's the Jeep off-roading at Johnson Valley OHV, in Lucern Valley, CA.