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Toyota 22R and 22R-E engine factory workshop and repair manual

- Scope and assumption
- Applies to the automatic transmission version used on Toyota 22R / 22R‑E pickups (procedure is for an automatic transmission with a removable pan). If you have a manual transmission, this procedure does not apply.

- Safety first (do these)
- Work on a level surface, engage parking brake, chock rear wheels.
- Wear safety glasses and chemical-resistant gloves.
- Support the vehicle securely with jack stands rated for the vehicle weight; never rely on a hydraulic jack alone.

- Tools required (detailed descriptions and how to use each)
- Floor jack
- What: hydraulic jack to lift the vehicle.
- How to use: position under manufacturer-specified lift point, pump handle to raise; always place jack stands under frame before going under vehicle; never go under vehicle supported only by the jack.
- Jack stands (pair)
- What: adjustable stands rated for vehicle weight.
- How to use: after lifting with floor jack, place stands under solid frame points and slowly lower vehicle onto them; verify stability before working.
- Wheel chocks
- What: rubber or plastic blocks to prevent rolling.
- How to use: wedge behind rear tires opposite the end you’re working on.
- Drain pan (large capacity)
- What: shallow container to catch ATF.
- How to use: place under transmission pan to catch fluid when bolts are loosened; use large enough pan for several quarts.
- Socket set with ratchet and extensions (common sizes 10mm–17mm and a 3/8" drive)
- What: hand sockets for removing pan bolts and filter bolts.
- How to use: select correct socket, attach to ratchet/extension, turn counterclockwise to loosen bolts; keep bolts organized.
- Torque wrench (in-lb/ft-lb range)
- What: tool to tighten bolts to the correct torque to avoid overcompressing gasket or stripping threads.
- How to use: set desired torque, use to tighten bolts in a crisscross pattern; if you don’t have a torque wrench you must tighten only to “snug” (see note under torque) but a torque wrench is strongly recommended.
- Breaker bar
- What: long handled bar for stubborn bolts.
- How to use: attach socket to breaker bar and apply steady force; don’t use impact tools on soft bolts.
- Gasket scraper or plastic scraper
- What: blade to remove old gasket material without gouging mating surface.
- How to use: hold scraper at low angle and push along surface to lift old gasket; use plastic scraper if aluminum pan to avoid scratching.
- Clean shop rags and lint-free towels
- What: for cleaning surfaces and wiping fluid.
- How to use: use to remove old gasket, clean magnet and pan, and wipe transmission fill area.
- Solvent or brake parts cleaner
- What: degreaser to remove oil and dirt from mating surfaces.
- How to use: spray on metal surface and wipe with lint-free towel; ensure solvent is allowed to evaporate before assembly.
- Drain plug washer (if pan has a drain plug)
- What: crush washer/crusher ring that seals drain plug.
- How to use: replace with new washer when reinstalling drain plug to prevent leaks.
- New transmission pan gasket (OEM or quality aftermarket)
- What: gasket shaped to the pan (paper, rubber, or molded).
- How to use: align on cleaned pan flange before installing pan; some gaskets require RTV at corners—follow gasket maker instructions.
- New transmission filter (recommended)
- What: in-tank filter that traps debris and includes gasket/O‑ring.
- How to use: remove old filter from valve body, install new filter and tighten mounting bolt to specified torque; typically replaced whenever pan is removed.
- Magnetic pickup or small magnet (optional)
- What: to remove metal particles from pan or to check pan magnet.
- How to use: run through pan and on magnet to remove debris; inspect amount of metal.
- Funnel and appropriate ATF (clean container)
- What: funnel and correct automatic transmission fluid (ATF) for your vehicle. Older 22R automatics commonly use Toyota Type T or a Dexron II/III/Mercon equivalent depending on year—use the manufacturer‑recommended ATF in the owner/service manual.
- How to use: after assembly, use funnel through the transmission dipstick tube or fill port to add fluid slowly.
- Torque specifications reference (service manual or reliable source)
- What: to confirm bolt torque values for pan and filter.
- Why required: prevents leaks, prevents stripped threads, ensures correct gasket compression.

- Why extra tools or parts may be required
- Torque wrench: required to avoid over-tightening pan bolts which can warp the pan or crush gasket; lack of one increases leak risk.
- New filter: recommended because removing the pan exposes and allows replacing the in-tank filter; leaving the old filter keeps trapped contaminants in the system.
- Drain plug washer: required if your pan has a crush washer to ensure a proper seal after reassembly.
- RTV gasket maker: sometimes required for small gaps or corners depending on gasket type; follow gasket maker and gasket instructions.
- Service manual: required to confirm exact fluid type, capacity, torque specs, and transmission code.

- Parts you will likely need (what, why)
- Transmission pan gasket (OEM or aftermarket)
- Why: old gasket is usually flattened/hardened and will leak when pan is reinstalled.
- Transmission filter (OEM recommended)
- Why: removes trapped particles; replacing reduces risk of recontamination and premature wear.
- ATF (quantity depends on transmission; expect 6–10 quarts total when performing filter change—refer to capacity chart)
- Why: fluid is lost during drain; fresh ATF required to reach correct level and maintain proper hydraulic function.
- Drain plug crush washer (if applicable)
- Why: one‑time seal; reuse risks leaks.
- Pan gasket bolts (optional)
- Why: some kits include new bolts or you may want replacements if old bolts are rusted/rounded.

- Procedure (step-by-step in order — read all before starting)
- Prepare vehicle: park level, chock wheels, lift with floor jack at specified point, support with jack stands.
- Place drain pan under transmission pan and remove dipstick if present to allow fluid to flow.
- Loosen pan bolts gradually
- Break bolts loose with ratchet; if pan has a drain plug, remove drain plug first.
- If no drain plug, loosen pan bolts evenly around perimeter, leaving two bolts opposite each other a few turns so pan doesn’t fall suddenly.
- Lower pan carefully
- Support pan with one hand as you remove last bolts; tilt to control fluid flow into drain pan.
- Allow fluid to drain; remove pan and set aside.
- Inspect pan and magnets
- Clean pan with solvent, wipe out metal flakes, inspect magnet(s) and wipe clean; assess amount of metal—small filings are normal, heavy scoring or chunks indicate issues requiring professional diagnosis.
- Remove old filter
- Locate filter attached to valve body, remove the mounting bolt(s) carefully (catch any residual fluid), pull old filter out; note orientation of O‑ring or seal.
- Install new filter
- Install new filter in same orientation; replace any O‑rings if provided; tighten mounting bolt to service manual torque or snug if no spec (torque wrench recommended).
- Clean mating surfaces
- Scrape all old gasket material from transmission case and pan flange with plastic scraper; clean with solvent; ensure surfaces are flat and dry.
- Install new gasket
- Place the gasket on the pan flange; some gaskets are adhesive-backed or require RTV on certain corners—follow gasket maker/manufacturer instructions.
- Reinstall pan and bolts
- Position pan with gasket against case, hand-thread bolts to avoid cross-threading.
- Tighten bolts in a crisscross/star pattern incrementally to seat gasket evenly.
- Use torque wrench to final torque per specification (typical pan bolts for many Toyota automatics: around 7–12 ft‑lb; confirm exact value in service manual).
- Reinstall drain plug/washer if removed
- Replace crush washer and tighten to spec or snug if no spec available.
- Clean area and lower vehicle slightly if needed to access dipstick/fill tube.
- Refill with correct ATF
- Using a funnel, add ATF slowly through dipstick tube or fill port to approximate level; do not overfill.
- Start engine and cycle through gears
- With vehicle on level ground and parking brake engaged, start engine and move selector through all gears (P → R → N → D → L etc.) pausing a few seconds in each to circulate fluid.
- Check ATF temperature and level
- With engine idling and transmission warmed to operating temperature per manual (often idle for several minutes), check fluid level on dipstick and add to correct mark. Levels vary by transmission—follow manual procedure (engine running, selector in Park, or Neutral—use exact procedure in service manual).
- Inspect for leaks
- With engine idling and on level ground, check pan bolts and drain plug for leaks; retorque if small seepage is found after initial run.
- Dispose of old fluid properly
- Place used fluid in sealed container and take to a recycling center or auto parts store that accepts used ATF.

- Common pitfalls and quick tips
- Don’t overtighten pan bolts — aluminum pans and thin flanges strip easily; use torque wrench.
- Replace filter with gasket change — cheaper insurance against contamination.
- If the pan contains large chunks of metal, do not continue driving — that indicates internal damage; consult a transmission specialist.
- Keep work area clean — dirt in transmission can cause shift problems.
- If you don’t have a torque wrench or service manual, tighten bolts to a light “snug” and recheck for leaks frequently — but get proper torque specs and a wrench for best results.

- When professional help is required
- If you find excessive metal chunks, burnt-smelling fluid, or major internal damage in the pan or filter.
- If you cannot achieve correct fluid level or the vehicle shifts poorly after the service.

- Final note on parts selection
- Use an OEM or reputable aftermarket transmission filter and a gasket matched to your transmission model/year. Many parts houses can look up the correct filter and gasket by year, make, model, engine and transmission code—bring the vehicle VIN or transmission code if available.

- Quick checklist to gather before starting
- Floor jack, two jack stands, wheel chocks, large drain pan, socket set, torque wrench, gasket scraper, solvent, rags, new pan gasket, new filter, ATF, new drain washer (if applicable), safety gear.

- Torque and fluid reminder
- Confirm exact bolt torque values and the correct ATF grade for your exact vehicle year/transmission from a factory service manual or a trusted repair database before final tightening and refill.
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