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Piston Ring

Engine, Cooling and Exhaust › Engine
Unified entry — merged from multiple cross-listed pages in the original manual.

Parts

PartPiston Rings
ManufacturerCHY
OEM part #5012364AE
Price$38.95
NotesIncludes: Standard Rings For 1 Piston.

Labor

Replace — Each Additional0.3 hr
Warranty 0.0 hrSkill A
One Cylinder18.1 hr
Warranty 0.0 hrSkill A
With Auto Trans, Add0.2 hr
Warranty 0.0 hrSkill A
With 4WD, Add1.0 hr
Warranty 0.0 hrSkill A
To R&R Piston, Pin or Connecting Rod, Add — One0.2 hr
Warranty 0.0 hrSkill A
Each Additional0.1 hr
Warranty 0.0 hrSkill A
All0.7 hr
Warranty 0.0 hrSkill A
To R&R Connecting Rod Bearings, Add — Each0.1 hr
Warranty 0.0 hrSkill A
Piston Ring: Service and Repair12 steps
ℹ NOTE
The ring gap measurement must be made with the ring positioned at least 12mm (0.50 inch.) from bottom of cylinder bore.
ℹ NOTE
Make sure the piston ring grooves are clean and free of nicks and burrs.
ℹ NOTE
Piston rings are installed in the following order:
Fig. 1
Fig. 1
Fig. 2
Fig. 2
Fig. 3
Fig. 3
Fig. 4
Fig. 4
Fig. 5
Fig. 5
Fig. 6
Fig. 6
Fig. 7
Fig. 7
Fig. 8
Fig. 8
Fig. 9
Fig. 9
Fig. 10
Fig. 10
Fig. 11
Fig. 11
  1. Wipe the cylinder bore clean.
  2. Insert the ring in the cylinder bore.
  3. Using a piston, to ensure that the ring is squared in the cylinder bore, slide the ring downward into the cylinder.
  4. Using a feeler gauge (1) check the ring end gap. Replace any rings not within specification. PISTON RING SIDE CLEARANCE
  5. Measure the ring side clearance as shown make sure the feeler gauge (1) fits snugly between the ring land and the ring. Replace any ring not within specification.
  6. Rotate the ring around the piston, the ring must rotate in the groove with out binding. PISTON RING SPECIFICATION CHART
  7. The No. 1 and No. 2 piston rings have a different cross section. Ensure No. 2 ring is installed with manufacturers I.D. mark (Dot) facing up, towards top of the piston. -Oil ring expander. -Upper oil ring side rail. -Lower oil ring side rail. -No. 2 Intermediate piston ring. -No. 1 Upper piston ring.
  8. Install the oil ring expander.
  9. Install upper side rail (1) by placing one end between the piston ring groove and the expander ring. Hold end firmly and press down the portion to be installed until side rail is in position. Repeat this step for the lower side rail.
  10. Install No. 2 intermediate piston ring using a piston ring installer.
  11. Install No. 1 upper piston ring using a piston ring installer.
  12. Position piston ring end gaps as shown. It is important that expander ring gap (5) is at least 45° from the side rail gaps, but not on the piston pin center or on the thrust direction.
Factory service manual
From the 2008 KK factory manual — descriptions, specs, torque & procedures for this part.
PISTON RING FITTING📷 1
1 - FEELER GAUGE
Before reinstalling used rings or installing new rings, the ring clearances must be checked.
1. Wipe the cylinder bore clean. 2. Insert the ring in the cylinder bore.
NOTE: The ring gap measurement must be made with the ring positioned at least 12 mm (0.50 inch.) from bottom of cylinder bore.
3. Using a piston, to ensure that the ring is squared in the cylinder bore, slide the ring downward into the cylinder. 4. Using a feeler gauge (1) check the ring end gap. Replace any rings not within specification.
1 - FEELER GAUGE
figure
PISTON RING SIDE CLEARANCE📷 1
NOTE: Make sure the piston ring grooves are clean and free of nicks and burrs.
5. Measure the ring side clearance as shown in illustration make sure the feeler gauge (1) fits snugly between the ring land and the ring. Replace any ring not within specification. 6. Rotate the ring around the piston, the ring must rotate in the groove with out binding.
figure
PISTON RING SPECIFICATION CHART📷 2
Ring Position Groove Clearance Maximum Clearance
    Upper Ring     0.051 - 0.094 mm       0.11 mm
                     (0.0020 - 0.0037    (0.004 in.)
in.)
 Intermediate Ring    0.04 - 0.08 mm      0.10 mm
                     (0.0016 - 0.0031    (0.004 in.)
in.)
Oil Control Ring 0.019 - 0.229 mm0.25 mm
(Steel Rails)(0.0007-.0090 in.)(0.010 in.)
Ring PositionRing GapWear Limit
Upper Ring0.20 - 0.36 mm0.43 mm
-(0.0079 - 0.0142(0.0017 in.)
in.)
Intermediate Ring0.37 - 0.63 mm0.74 mm
-(0.0146 - 0.0249(0.029 in.)
in.)
Oil Control Ring0.025 - 0.76 mm1.55 mm
(Steel Rail)(0.0099 - 0.03 in.)(0.061 in.)
1 - SIDE RAIL END
7. The No. 1 and No. 2 piston rings have a different cross section. Ensure No. 2 ring is installed with manufacturers I.D. mark (Dot) facing up, towards top of the piston.
NOTE: Piston rings are installed in the following order:
Oil ring expander. Upper oil ring side rail. Lower oil ring side rail. No. 2 Intermediate piston ring. No. 1 Upper piston ring.
8. Install the oil ring expander. 9. Install upper side rail (1) by placing one end between the piston ring groove and the expander ring. Hold end firmly and press down the portion to be installed until side rail is in position. Repeat this step for the lower side rail.
10. Install No. 2 intermediate piston ring using a piston ring installer. 11. Install No. 1 upper piston ring using a piston ring installer.
1 - SIDE RAIL UPPER 2 - NO. 1 RING GAP 3 - PISTON PIN 4 - SIDE RAIL LOWER 5 - NO. 2 RING GAP AND SPACER EXPANDER GAP
12. Position piston ring end gaps as shown in illustration. It is important that expander ring gap (5) is at least 45° from the side rail gaps, but not on the piston pin center or on the thrust direction.
DAMPER-CRANKSHAFT
figure
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