Hummer H2. Manual — part 165

Fig. 27: Single Injector - Known Good - Voltage Pattern

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Waveforms - Injector Pattern Tutorial

Fig. 28: Single Injector - Known Good - Voltage Pattern

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Waveforms - Injector Pattern Tutorial

GENERAL INFORMATION

Wheel Alignment Theory & Operation

ADJUSTMENTS

PRE-ALIGNMENT INSTRUCTIONS

GENERAL ALIGNMENT CHECKS

Before adjusting wheel alignment, check the following:

z

Each axle uses tires of same construction and tread style, equal in tread wear and overall diameter. Verify
that radial and axial runout is not excessive. Inflation should be at manufacturer's specifications.

z

Steering linkage and suspension must not have excessive play. Check for wear in tie rod ends and ball
joints. Springs must not be sagging. Control arm and strut rod bushings must not have excessive play. See
Fig. 1 .

Fig. 1: Checking Steering Linkage

NOTE:

This article is intended for general information purposes only. This information
may not apply to all makes and models.

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Wheel Alignment Theory & Operation

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Wheel Alignment Theory & Operation

z

Vehicle must be on level floor with full fuel tank, no passenger load, spare tire in place and no load in
trunk. Bounce front and rear end of vehicle several times. Confirm vehicle is at normal riding height.

z

Steering wheel must be centered with wheels in straight ahead position. If required, shorten one tie rod
adjusting sleeve and lengthen opposite sleeve (equal amount of turns). See Fig. 2 .

z

Wheel bearings should have the correct preload and lug nuts must be tightened to manufacturer's
specifications. Adjust camber, caster and toe-in using this sequence. Follow instructions of the alignment
equipment manufacturer.

Fig. 2: Adjusting Tie Rod Sleeves (Top View)

CAMBER

1. Camber is the tilting of the wheel, outward at either top or bottom, as viewed from front of vehicle. See

Fig. 3 .

2. When wheels tilts outward at the top (from centerline of vehicle), camber is positive. When wheels tilt

inward at top, camber is negative. Amount of tilt is measured in degrees from vertical.

CAUTION: DO NOT attempt to correct alignment by straightening parts. Damaged

parts MUST be replaced.

1998 Chevrolet Pickup C1500

GENERAL INFORMATION Wheel Alignment Theory & Operation