Periodic Maintenance Inspection General Maintenance
Listed below are inspections and services which should
be performed at least twice a year (for instance, each spring and fall). A
dealer's service department or qualified service center should perform these
inspections. All repairs should be completed at once.
Steering, Suspension and Front Drive Axle Boot and Seal Inspection
Inspect the front and the rear suspension for the following:
| • | Signs of wear or lack of lubrication |
Inspect the power steering lines and the hoses for the following:
Inspect the drive axle boot seals for the following:
Replace damaged, torn or leaking seals.
Exhaust System Inspection
Inspect the complete system. Inspect the body near the exhaust system.
Look for broken, damaged, missing or out-of-position parts as well as open
seams, holes, loose connections or other conditions which could cause
a heat build-up in the floor pan or could let exhaust fumes into the vehicle.
Refer to
Exhaust System Inspection
in Engine Exhaust.
Radiator and Heater Hose Inspection
Inspect the hoses and replace if they are cracked, swollen or deteriorated.
Inspect all pipes, fittings and clamps; replace as needed.
Throttle Linkage Inspection
Inspect the following:
| • | Missing parts such as retainers or clips |
| • | Interference of the linkage or cable conduit to critical components
such as fuel lines, brake lines, harness leads, etc. |
| • | Proximity of the cable to the exhaust system and other head sources:
check for melting and/or discoloration |
| • | Cable for kinks and sharp bends |
| • | Clearance of the throttle system moving parts throughout their
travel from other stationary components |
| • | Damage of the components due to cable kinking, severe kinking,
severe abrasion, misalignment, etc. |
Replace high effort or excessively worn cables.
Drive Axle Inspection
Check the front/rear axle fluid level, add the proper fluid as needed.
Refer to
Fluid and Lubricant Recommendations
Check the constant velocity (CV) joints and axle seals for leakage.
Transfer Case Inspection (Automatic Four Wheel Drive)
Check every 12 months or at oil interval changes, add the proper fluid
as needed. Refer to
Fluid and Lubricant Recommendations
Check the transfer case vent hose for kinks and proper installation.
Brake System Inspection
Inspect the complete system.
Notice: A low brake fluid level can indicate worn disc brake pads which may need to
be serviced. Also, if the brake system warning light stays on or comes on, something
may be wrong with the brake system. If the anti-lock brake system warning light stays
on or comes on, something may be wrong with the anti-lock brake system.
Inspect the brake lines and the hoses for the following:
Inspect the disc brake pads for wear. Inspect the rotors for surface
condition. Inspect other brake parts, including the calipers, the parking
brake, etc. Check the parking brake adjustment.
The brakes may need to be inspected more often if driving habits or
conditions result in frequent braking.
Periodic Maintenance Inspection Cooling System Maint Recommend
Notice: Do not spray cold water on a hot radiator.
Notice: Do not use pressure greater than 138 kPa (20 psi) to test the radiator.
Damage to the radiator will result if a higher pressure is used.
| • | Check the outside of the radiator for bent fins or signs of leakage.
Do not temporarily seal the cooling system with a sealer type antifreeze or
coolant additive. |
| • | Remove any stones from between the fins. |
| • | Clean loose debris and road film from the radiator core with a
quality grease solvent and compressed air. For a more efficient cleaning,
direct the stream of solvent at the front of the core. Remove the radiator
grille, the fan guard, and the fan shroud in order to ensure a thorough cleaning. |
| • | Remove the radiator cap and look for plugging and scale on the
inside of the tank. Replace a badly plugged radiator. Test the cooling system
and the radiator. |
| • | Check the coolant level. If the level is low, add the recommended
coolant as required. |
| • | Check the condition of the radiator hose clamps. Tighten the clamps
if any leakage is seen. Replace the clamps if you see the following conditions: |
| • | Check the radiator hoses for cracking or for a spongy appearance.
Replace deteriorated hoses or bursting could occur, resulting in coolant loss
and extensive damage from overheating. |
| • | Check the radiator core for leaks and for accumulation of dirt
that could obstruct the air passages and reduce heat transfer. |
| • | Check the coolant recovery reservoir for leaks. |
| • | Inspect the radiator rubber mountings and bumpers for deterioration.
Replace these as necessary. Check the mounting bolts, the supports, and the
braces. Also, check for damage to the radiator core, the side flanges, and
the supporting components. |
| • | Check for clearance between the fan blade, the core, and the shroud.
Check the fan attaching bolts for tightness. Make sure no bolts are missing.
Replace the fan if any blade is bent. The blade and the shroud should be
equal distance around the entire perimeter of the shroud. Adjust the distance
as necessary after you make any adjustment to the fan or the fan mounting
bracket and hub. |
| • | Inspect the filler cap seal. Replace the cap if the following
seal conditions apply: |
| • | In order to help maintain efficient heat dissipation, do an occasional
external flush of the radiator with water. This removes the majority of dirt
accumulation and foreign matter from between the core fins. Using moderate
pressure, direct water from behind the core in order to force out debris.
Direct the water stream in line with the fins in order to reduce the possibility
of bending the fins. |
| • | A radiator with a dirty, obstructed, or leaking core causes the
engine to overheat. Radiator scale deposits result from using water that is
hard and has a high mineral content in the cooling system. Heat affects the
minerals in the water causing the formation of scale, or hard coating, on
the metal surfaces within the radiator, reducing the transfer of heat. Some
hard water produces a silt-like deposit that restricts the flow of water.
Replace a radiator that is plugged, or has a heavy scale on the core. |
