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Nie, dziękuję Przekieruj mnie tamkia ceed crankshaft sprocket replacement procedure
• Remove ancillary components, set No. 1 cylinder to TDC, lock the cams and crank.
• Take off the crank pulley, timing-chain cover and tensioner, then lift off the chain.
• Slide (keyed version) or pull/heat-shrink (keyless interference version) the crankshaft sprocket off, inspect, and install the new sprocket.
• Re-time the chain on the coloured links, release the tensioner, rotate twice, verify timing, reseal the cover, fit a NEW crank bolt and torque 127–137 N·m + 30° + 30° (Gamma spec).
Key points
– Gamma 1.6 L G4FC/G4FG engines are interference types: timing accuracy is critical.
– Later engines use a keyless shrink-fit sprocket – heat for removal/installation.
– Always replace the entire chain kit and the single-use crank bolt.
– Observe factory torque/angle specs and RTV patterns for leak-free re-assembly.
Vehicle/Engine identification
• Kia Cee’d ED/JD/CD platforms mostly use the Hyundai–Kia 1.6 L Gamma (G4FC, G4FG, G4FJ).
• Early ED models (≈2007-2010) have a Woodruff-key slip-fit sprocket; later JD/CD models are keyless interference (shrink-fit). Confirm by VIN or visual inspection before you start.
Tooling and parts checklist
Special
– Crank pulley holding tool 09231-2B100 (or equivalent)
– 3-jaw puller / hydraulic puller (mandatory for interference sprockets)
– Camshaft locking template (laser-cut plate or OEM 09231-2C100)
– Torque wrench + angle gauge (0–200 N·m, 0–180°)
– Induction heater or oven capable of 170–210 °C (shrink-fit only)
Consumables
– Complete timing-chain kit (chain, crank sprocket, both cam sprockets, guides, hydraulic tensioner, front seal)
– NEW crankshaft pulley bolt (torque-to-yield)
– Ultra-black or OE RTV for cover and sump overlap
– Engine oil/filter, coolant, disposable gloves, brake-clean
Strip-down sequence
a) Safety & preparation
Disconnect battery, lift RF corner, support car on stands, remove wheel/splash shield, drain oil and coolant.
b) Accessory drive & mount
Slack accessory belt; support engine with jack + wood; remove RH engine mount.
c) Harmonic balancer
• Hold crank with tool; break loose crank bolt (factory Loctite® makes this 200–250 N·m to undo).
• Remove pulley; inspect rubber damper and key slot (if keyed).
d) Timing cover
Take off valve cover to reveal cam marks; remove A/C and alternator brackets if attached; unbolt timing cover (note bolt lengths, three run through sump).
e) Establish TDC
Re-fit pulley bolt finger-tight; rotate clockwise until keyway/laser mark points 12 o’clock and cam phaser dots align with cylinder-head flats.
f) De-tension chain
Compress hydraulic tensioner; insert pin/drill-bit. Remove tensioner, guides, chain.
Crankshaft sprocket removal
• Slip-fit version – slides off by hand; use two opposing plastic levers if varnish present.
• Shrink-fit version – mark depth, fit 3-jaw puller, draw sprocket off evenly; heating it to ≈150 °C eases removal.
Inspection
– Check crank snout for galling or fretting.
– Measure nose Ø (should be 34.959–34.975 mm keyed, 40.000–40.016 mm keyless).
– Reject crank if taper, step wear > 0.02 mm.
Installing the new sprocket
Keyed: seat new Woodruff key, slide sprocket fully home, timing dot at 12 o’clock.
Keyless (interference):
• Dry-ice or chill crank, heat sprocket to 180 °C in oven/induction loop (≈0.11 mm bore expansion).
• Wearing insulated gloves, align witness mark and push straight on until it shoulders – must seat within 20 s, no hammering.
Retiming the chain
– Fit lower/upper guides (9.8–11.8 N·m).
– Position coloured chain links to crank dot, intake cam dot, exhaust cam dot.
– Install tensioner pinned; torque bolts; pull pin.
Verification
– Hand-rotate crank 2 rev CW; feel for binding; realign crank to TDC; confirm both cam dots coincide with casting lines.
– If wrong, DO NOT run engine – re-index chain.
Re-assembly
– Clean block/head/sump joint with plastic scraper and brake-clean.
– Apply 3 mm bead RTV exactly on OEM path (esp. around oil passages).
– Fit timing cover (10 mm bolts 9–11 N·m; 12 mm bolts 18–22 N·m) + new front seal.
– Reinstall pulley; apply engine oil to bolt threads and flange.
– Crank bolt tightening (Gamma typical):
1) 127–137 N·m preload
2) +30°
3) +30° (second angle)
Older ED (bolt-plus-washer type): 49 N·m + 120°; always check service data for your VIN.
– Fit mount, belt, covers; fill oil (3.3 L 5W-30) and coolant (approx. 6.3 L premix).
Initial start & checks
Disable coils/fuel, crank 10 s to build OP, reconnect, start. Monitor oil pressure lamp, listen for rattle ≤ 1 s (normal tensioner charge). Check for leaks, retorque mount/lug nuts, clear any cam/crank correlation DTCs (P0016/17) if set.
• Hyundai-Kia phased out Woodruff-key sprockets after 2010; almost all current Gamma, Kappa and Smartstream engines use interference-fit gears for NVH and micro-timing accuracy.
• Aftermarket induction heaters with temperature feedback (~€150) are now common in specialist garages for these shrink-fits, reducing puller damage risk.
• Improved timing-chain kits (IWIS, Cloyes) feature DLC-coated tensioner blades and upgraded oil-jet holes to address early Gamma chain stretch issues.
– Interference-fit crank gears transmit torsional load through friction (μ·F·r) rather than a key; the giant torque of the T-t-Y bolt (≈230 kN clamp) plus 0.0007–0.0012 mm negative tolerance prevents micro-motion that would otherwise knock timing phasers out of phase.
– Heating the sprocket instead of freezing the crank avoids moisture condensation on steel parts and is OEM-approved.
• The engine is classed as an interference design; inaccurate DIY work can destroy the power-train, posing environmental and financial risks.
• Always dispose of used oil/coolant under local hazardous-waste regulations (EU Directive 2008/98/EC).
• Do not re-use torque-to-yield fasteners; stretched bolts can fail suddenly, jeopardising occupant safety.
– Photograph timing marks before removal; keep hardware on marked cardboard templates.
– Use only OE or high-quality aftermarket kits; cheap chains stretch quickly, invalidating warranty claims.
– If the sprocket feels “sticky” on removal, inspect crank end-float (spec 0.07–0.25 mm) – excessive thrust-bearing wear can masquerade as sprocket seizure.
– Torque values shown are typical Gamma; consult Kia GDS/Service Manual for your exact model year.
– Some 1.4 L Kappa Ceed models share similar procedure but different torques (crank bolt 118–127 N·m + 90°).
– If you lack the holding tool, locking the flywheel with a long screwdriver is NOT recommended; you may chip ring-gear teeth.
– Compare chain-stretch data between OE and aftermarket kits; IWIS GLX vs OE Daido.
– Investigate ultrasonic “blind” inspection of shrink-fit gears without disassembly.
– Examine Hyundai-Kia’s move to belt-in-oil (BIO) timing on Smartstream engines as a future service consideration.
Replacing the Kia Cee’d crankshaft sprocket is essentially a full timing-chain overhaul. Correct identification (keyed vs shrink-fit), meticulous cleaning, strict torque-angle tightening of a new bolt, and triple-verification of timing marks are the critical success factors. Observe OEM procedures, use the right holding and heating tools, and the Gamma engine will resume quiet, reliable service.
