Revised Maintenance Procedures (ITB02-004)

Publication date: 2001-01-09
Reference number: ITB02-004

REVISED MAINTENANCE PROCEDURES

TECHNICAL SERVICE BULLETIN

Reference Number(s): ITB02-004, Date of Issue: January 9, 2002

INFINITI:	1997-2001 Q45, QX4; 1996-2001 I30; 1999-2001 G20
CLASSIFICATION:	GI01-002
SECTION:	General Information
APPLIED VEHICLE(S):	1997-2001 Q45 (FY33); 1997-2001 QX4 (JR50); 1996-1999 I30 (CA32); 2000-2001 I30 (CA33); 1999-2001 G20 (P11)

SERVICE INFORMATION

Starting with the 2002 model year, some vehicle maintenance procedures have been changed from similar procedures in past model years. The revisions have been integrated into the appropriate 2002 model year Service Manuals.

These revised maintenance procedures have also been adopted for all of the Applied Models listed above.

The revised procedures are intended to:

Standardize vehicle maintenance over all model lines
Parallel, where possible, standard shop maintenance and check practices.

The changed maintenance procedures are generically described and illustrated in the following section. The procedures are organized by component area (Engine Maintenance, Chassis and Body Maintenance) just as they are in a typical Service Manual Maintenance (MA) section.

NOTES:

If a topic or area of vehicle maintenance for the Applied Models is not addressed in the following section, it has not changed.
Only some of the Periodic Scheduled Maintenance Procedures have been revised. The General Maintenance Procedures remains the same.
Some Reference Sections (for maintenance procedures) have been moved from their previous Sections (AX for axle and suspension, EL for ASCD) into the Maintenance Section (MA).

REVISED PERIODIC MAINTENANCE PROCEDURES

The six sub-sections below contain revised service procedures. In cases where specifications are required (capacities, standard thickness, wear limits, etc.) refer to the appropriate Service Manual for the vehicle you are servicing.

ENGINE MAINTENANCE

Cooling System Maintenance

During standard scheduled maintenance:
- Now only the radiator is to be drained.
- Draining the engine block is no longer part of standard scheduled maintenance.
If drained engine coolant contains contaminants such as rust, corrosion, or discoloration, draining the block or flushing the cooling system should be performed.
Refer to the appropriate Service Manual for model-specific cooling system layout instructions and refill directions.

CHASSIS AND BODY MAINTENANCE

Brake Inspection

Perform brake system overall inspection:
- Check brake fluid level and fluid lines for leaks, chafing, abrasions, deterioration, etc.
- Check parking brake cables chafing, wear, and for improper attachment.
  CAUTION: If brake fluid level is extremely low, system may be leaking.
Check the following components for leaks, damage, and wear:
- Disc rotor condition, wear and damage.
- Disc caliper for leakage.
- Disc pads for wear (see Fig 1 ) or damage.
  
  Fig 1: Inspecting Disc Pads
- Drum brake (if equipped) wheel cylinder for leakage and boot condition.
- Brake drum and shoe lining (if equipped) for wear, damage, and condition of surface (see Fig 2 ).
  
  Fig 2: Inspection of Brake Drum & Shoe Lining
  
  NOTE: After inspection of brakes, re-install wheel and tire, and torque lug nuts to specification.

Axle and Suspension

Check front and rear axle and suspension parts for excessive play, cracks, wear, or other damage.

Shake each wheel to check for excessive play, then rotate each wheel to check for excessive noise (see Fig 3 ).
Check under-vehicle suspension components:
- Where applicable, check suspension ball joint for grease leakage and ball joint dust cover for cracks or other damages (see Fig 3 ).
- Check strut (shock absorber) for oil leakage or other damages (see Fig 3 ).
- Check axle and suspension nuts and bolts for looseness.
  
  Fig 3: Inspection of Axle & Suspension

Propeller Shaft (4WD)

Propeller shaft inspection has been added to periodic maintenance chart on four-wheel drive (4x4) vehicles.
- For Schedule 1, inspect every 7500 miles or 6 months.
- For Schedule 2, inspect every 15,000 miles or 12 months.
Check the propeller shaft(s) for damage, looseness, or grease leakage (see Fig 4 ).
NOTE: The front propeller shaft should be re-greased after being immersed in water.

Fig 4: Propeller Inspection

SRS Air Bag Inspection

For standard scheduled maintenance, the SRS air bag 10 year inspection (from the date of manufacture) has been deleted.

ASCD Inspection

When equipped, inspect the ASCD hoses and components (see Fig 5 ).

NOTE: This inspection was originally located in the EL section of the Service Manual.

Fig 5: ASCD Inspection