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Toyota 1HZ 1PZ 1HD-T engine factory workshop and repair manual

- Safety and prep (do this first)
- Park on a perfectly flat, level surface and chock the rear wheels. Use wheel chocks on both sides of at least one rear wheel.
- Mark the steering wheel straight with tape so you can return it to center after turning the steering during work.
- Check and set tire pressures to the vehicle’s spec (pressure affects alignment). Inflate to the same pressure on all four tires.
- Remove heavy loads from the vehicle and have the fuel tank at a typical level — alignment is done with the vehicle at normal ride height.
- Have a factory service manual or a printout of alignment specs for your specific Toyota chassis (1HZ/1PZ/1HD-T are engines used in different Land Cruiser/Prado models). Use those exact specs for final settings.

- Basic inspection (do before trying to align anything)
- Check tire condition and wear pattern (inner/outer wear tells you what’s wrong).
- Check for play in steering/suspension components: jack up the front, support on jack stands at the frame, grab the wheel at 3 and 9 o’clock and push/pull to check tie rod play; grab at 12 and 6 to check ball joints/wheel bearings.
- Inspect tie rod end boots, rack boots, ball joint boots, control arm bushings, track/drag link, pitman/idler arms for torn boots, grease loss, rust, or visible damage.
- If you find any play, bangs, or torn boots, those parts must be replaced before alignment.

- What alignment means (brief)
- Toe: the front-to-back difference between the leading and trailing edges of the front wheels — this is the one you can reliably adjust yourself on most vehicles.
- Camber: the tilt of the wheel inward/outward at the top — sometimes adjustable, sometimes fixed depending on suspension type.
- Caster: the steering pivot angle that affects straight-line stability — often requires special adjustments (shims or adjustable arms) or professional alignment equipment to correct precisely.

- Tools you need and how to use each (detailed)
- Floor jack
- Description: heavy-duty hydraulic scissor or trolley jack for lifting the vehicle.
- Use: position under manufacturer lift point and raise the vehicle; always set on solid level ground. Do not rely on jack alone — use jack stands.
- Jack stands
- Description: adjustable stands that support the vehicle safely once lifted.
- Use: place under the frame or rated lift point and lower vehicle onto them. Never work under a car supported only by the jack.
- Wheel chocks
- Description: wedge blocks (rubber or metal) that stop wheels from rolling.
- Use: block the wheels diagonally opposite the side you’re working on and always use them when the vehicle is raised.
- Torque wrench
- Description: calibrated wrench that clicks at set torque.
- Use: to tighten suspension fasteners to factory torque specs after adjustments. This prevents loose or over-tightened bolts.
- Standard hand tools (sockets, ratchet, combination wrenches, breaker bar)
- Description: common socket set (metric), wrenches, and a breaker bar for stubborn nuts.
- Use: remove and loosen jam nuts and steering/tie-rod nuts. Use correct-size sockets/wrenches to avoid rounding nuts.
- Tape measure (or two)
- Description: 3–6 m tape measure, metric and imperial markings useful.
- Use: measure distances for toe using the string or tape method; measure between known points on rims.
- Straightedge or long level / marker
- Description: long straight bar or carpenter’s level.
- Use: to help check wheel toe visually or keep a string aligned in the string method.
- Tie rod sleeve wrench / adjustable pliers
- Description: open-ended wrench sized to the adjuster sleeve and jam nuts; locking pliers useful to hold the sleeve.
- Use: hold the tie-rod sleeve and turn the tie rod end to change length — this changes toe.
- Toe plates (recommended) or simple homemade toe plates (flat plates with a vertical edge)
- Description: metal or wooden plates that sit flush against the rim; often have measurement marks.
- Use: place against wheel and measure distance from plate to plate front and back to determine toe.
- Camber/caster gauge (bubble type or digital)
- Description: portable gauge that clamps to the wheel or hub and shows camber/caster angles.
- Use: attach per the gauge instructions to read camber; some gauges also read caster. Gives a quick check of angles.
- String kit (optional but cheap and effective)
- Description: two strings and four clamps that run around the outside of the tires at hub height to create a reference line.
- Use: set strings parallel to vehicle centerline and measure from string to rim front and rear to calculate toe.
- Turn plates (optional)
- Description: plates wheel sits on that allow the wheel to pivot freely for caster checks.
- Use: place under front wheels so wheels can turn easily during measurements.
- Penetrating oil, hammer, pry bar
- Description: for freeing seized nuts and making small adjustments.
- Use: apply penetrating oil to nuts, use pry bar carefully to set control arms while adjusting.
- Ball joint separator / tie rod end puller (required if replacing parts)
- Description: pickle fork or press-style puller to separate ball joints/tie rods.
- Use: separate worn tie rod ends/ball joints for replacement safely.
- Pitman arm puller (if replacing pitman/drag link)
- Description: special puller tool for removing pitman arm.
- Use: used when replacing pitman arm or drag link components.
- Ball joint press or control arm bushing tool (if replacing those parts)
- Description: hydraulic or threaded press to remove/fit pressed-in joints/bushings.
- Use: required for ball joint/control arm bushing replacement; shop may be needed for this.

- How to measure and set toe (basic string or tape method you can do as a beginner)
- Prep: wheels straight, steering locked center, vehicle on level surface, front at ride height, tires inflated.
- Method using toe plates or tape:
- Place toe plates (or flat boards) against the front of both front rims and then against the rear edge of the rims.
- Measure the distance between the two plates at the front of the rims and then measure the distance at the rear of the rims.
- Toe = front distance − rear distance (positive = toe-out, negative = toe-in if you define it that way). Your factory spec will say total toe or toe per wheel.
- To adjust: loosen the jam nuts on the tie-rod ends and rotate the tie-rod or sleeve. One end in, the other out changes length; turning the tie rod changes toe. Make small equal adjustments both sides as needed to meet spec.
- After each change, re-tighten jam nuts to torque spec and re-check measurements.
- Method using string:
- Run a string around the outside of the front and rear wheels at hub height using blocks/clamps to hold the string parallel to the car centerline.
- Measure from string to rim at front and rear of the front wheels; adjust tie rods until the difference equals the desired toe.
- How to use the tie-rod tools: hold the inner tie-rod or sleeve steady with a wrench and turn the outer tie-rod end with another wrench; if you have an adjuster sleeve, turn it. Keep track of how many turns and the same direction on both sides.

- How to check camber and caster (overview — these often need specific adjustments)
- Camber:
- Attach the camber gauge to the wheel or hub per gauge instructions.
- Read the camber angle and compare to spec.
- Adjustment depends on vehicle: some vehicles have eccentric bolts on control arms, or slotted mounting holes, or adjustable cam bolts. Loosen the mount and move the arm/camber bolt until in spec, then torque to spec.
- If camber is non-adjustable and out of spec, worn bushings, bent control arms, or frame damage may be the cause and will require replacement or shimming.
- Caster:
- Read with a caster/camber gauge while turning the wheel to the specified angle (gauge instructions vary).
- Adjusting caster commonly requires shims under spring perches (solid axles), adjustable control arms, or offset bushings on independent front suspensions.
- Because caster often requires spring removal, shimming, or specialized adjustable arms, many beginners hand this to a shop unless there’s a simple bolt-eccentric adjustment on the model.
- Important: If you change camber or caster, re-check toe afterward — changes affect toe.

- When replacement is required (what to replace and why)
- Tie rod ends / inner tie rods / drag link / center link
- Why: play (looseness), torn boots, grease loss, sloppy steering, uneven tire wear.
- Replacement effect: necessary — worn tie rods will prevent holding toe and make alignment impossible.
- Tools required: tie rod puller/pickle fork, wrenches, torque wrench.
- Ball joints
- Why: excessive vertical or lateral play, clunking, uneven wear.
- Replacement effect: loose ball joints change camber/caster under load and are unsafe.
- Tools required: ball joint press or a shop; replacement often requires some specialty tools.
- Control arm bushings
- Why: cracked, soft, or moved bushings cause alignment to drift and steering instability.
- Replacement effect: worn bushings allow arms to move and change geometry; replace to hold alignment.
- Tools required: bushing press or mechanical/heat methods; often better done at a shop unless you have a press.
- Track bar / panhard rod
- Why: worn bushings or bent rod move axle laterally causing alignment problems.
- Replacement effect: necessary if bent to locate axle correctly.
- Pitman arm / idler arm (parallelogram steering)
- Why: wear produces steering wander and incorrect toe under load.
- Replacement effect: required if loose; pullers needed.
- Shims
- Why: used to adjust caster on leaf-sprung solid axles.
- Replacement effect: simple and inexpensive way to correct caster, but requires lifting the axle and loosening/retorquing spring U-bolts.
- Shocks and springs
- Why: sagging springs or worn shocks change ride height and geometry.
- Replacement effect: restore correct ride height so alignment geometry is correct.

- Common signs that parts must be replaced (don’t align before replacing)
- Steering feels loose or wanders
- Excessive or cupped tire wear
- Clunking noises over bumps
- Torn rubber boots on tie rods/ball joints
- Visible play when you rock the wheel or lever the tie rod/ball joint

- Torque and repeat checks
- Always torque suspension fasteners to factory spec after making adjustments with a calibrated torque wrench.
- Drive vehicle for 10–20 km at normal speed after alignment, then recheck toe and fastener torque (bushings settle and can change settings).
- Recheck after 100–200 km again.

- When to go to a professional shop (recommended for beginners in specific cases)
- If camber or caster adjustments require shims under spring perches, removal of springs, pressed-in bushings, or bent/broken components.
- If you do not have a camber/caster gauge or accurate toe plates/string setup and want precise factory settings.
- If you find worn ball joints, pressed-in bushings, or bent arms (tools and experience required).
- Professional alignment shops have lift-mounted turntables and electronic gauges that set toe, camber, caster and thrust angle precisely.

- Typical alignment specs (very general — always use factory specs for your exact vehicle)
- Toe (total): near zero; commonly 0 to +2 mm total toe-in (0–1/16 inch).
- Camber: near 0° ± 1° (varies by model).
- Caster: typically 2°–6° positive (varies a lot by model).
- Note: these are approximate ranges — use the Toyota spec for your chassis.

- Final notes (short and practical)
- Never try to lock steering with the wheels turned and then torque steering parts — always set wheels straight, then torque.
- If you’re missing a tool (camber gauge, toe plates), basic toe correction via tape/string can be adequate, but camber/caster corrections usually need more gear or a shop.
- Replace worn steering or suspension parts before alignment — alignment without fixing worn parts is wasted effort.
- After any part replacement, always get a final check on a professional alignment rack if you want precise handling and tire life.

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