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PISTON RING FITTING Jeep Grand Cherokee WK

6.1l Engine - Service Information 15 illustrations ~1004 words

PISTON RING FITTING

Before reinstalling used rings or installing new rings, the ring clearances must be checked.

Scheme 585

Scheme 585: PISTON RING FITTING
Scheme 585: PISTON RING FITTING

Scheme 586

Scheme 586
Scheme 586

Scheme 587

Scheme 587
Scheme 587

Scheme 588

Scheme 588
Scheme 588

Scheme 589

Scheme 589
Scheme 589
  1. Wipe the cylinder bore clean.
  2. Insert the ring in the cylinder bore. 1 - FEELER GAUGE 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 check the ring end gap. (Scheme 585) Replace any rings not within specification. PISTON RING SIDE CLEARANCE NOTE: Make sure the piston ring grooves are clean and free of nicks and burrs. 1 - FEELER GAUGE
  5. Measure the ring side clearance as shown. (Scheme 586) Make sure the feeler gauge 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 Ring Position Ring/Groove Maximum Side Clearance Clearance Upper Ring 0.02-0.07 mm 0.11 mm (0.0008-0.0028 in.) (0.004 in.) Intermediate Ring 0.02-0.06 mm 0.10 mm (0.0008-0.0023 in.) (0.004 in.) Ring Position Ring Gap Wear Limit Upper Ring 0.30-0.40 mm 0.45 mm - (0.0118-0.0157 in.) (0.0177 in.) Intermediate Ring 0.35-0.60 mm 0.74 mm - (0.0137-0.0236 in.) (0.029 in.) Oil Control Ring 0.020-0.71 mm 0.76 mm (Steel Rail) (0.0078- 0.0279 in.) (0.030 in.)
  7. The No. 1 and No. 2 piston rings have a different cross section. Ensure No. 1 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. Lower oil ring side rail. Upper oil ring side rail. No. 2 Intermediate piston ring. No. 1 Upper piston ring. 1 - SIDE RAIL END
  8. Install the oil ring expander as shown.
  9. Install upper side rail 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. (Scheme 587)
  10. Install No. 2 intermediate piston ring using a piston ring installer. (Scheme 588)
  11. Install No. 1 upper piston ring using a piston ring installer. (Scheme 588) 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 (Scheme 589) It is important that expander ring gap is at least 45° from the side rail gaps, but not on the piston pin center or on the thrust direction.

Scheme 590

Scheme 590: REMOVAL
Scheme 590: REMOVAL
  1. Disconnect negative cable from battery.
  2. Remove accessory drive belt. Refer to «REMOVAL»(/jeep/grand-cherokee/wk-2004-2010/remont/accessory-drive-belts/#engine-cooling-system-automatic-transmission-cooling-system__removal) .
  3. Drain cooling system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk-2004-2010/remont/accessory-drive-belts/#engine-cooling-system-automatic-transmission-cooling-system) .
  4. Remove radiator upper hose.
  5. Remove fan shroud. Refer to «REMOVAL»(/jeep/grand-cherokee/wk-2004-2010/remont/accessory-drive-belts/#engine-cooling-system-automatic-transmission-cooling-system) .
  6. Remove vibration damper bolt. 1 - Special Tool 1023 Puller 2 - Special Tool 8513A Insert
  7. Remove damper using Special Tools 8513A Insert and 1023 Three Jaw Puller.

Scheme 591

Scheme 591: INSTALLATION
Scheme 591: INSTALLATION
1 - BEARING
2 - NUT
3 - THREADED ROD
4 - BEARING HARDENED SURFACE (FACING NUT)
5 - HARDENED WASHER
CAUTIONTo prevent severe damage to the Crankshaft, Damper or Special Tool 8512-A, thoroughly clean the damper bore and the crankshaft nose before installing Damper.
  1. Slide damper onto crankshaft slightly. CAUTION: Damper Installer 8512-A, is assembled in a specific sequence. Failure to assemble this tool in this sequence can result in tool failure and severe damage to either the tool or the crankshaft.
  2. Assemble Damper Installer 8512-A as follows, The nut is threaded onto the shaft first (2). Then the roller bearing (1) is placed onto the threaded rod (3) The hardened bearing surface of the bearing (1) MUST face the nut (2). Then the hardened washer (5) slides onto the threaded rod (3). (Scheme 591) Once assembled coat the threaded rod's threads with MOPAR® Nickel Anti-Seize or (Loctite No. 771).
  3. Using Damper Installer 8512-A, press damper onto crankshaft.
  4. Install then tighten vibration damper bolt to 176 N.m (129 ft. lbs.).
  5. Install radiator upper hose.
  6. Install accessory drive belt. Refer to «INSTALLATION»(/jeep/grand-cherokee/wk-2004-2010/remont/accessory-drive-belts/#engine-cooling-system-automatic-transmission-cooling-system__installation).
  7. Refill cooling system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk-2004-2010/remont/accessory-drive-belts/#engine-cooling-system-automatic-transmission-cooling-system).
  8. Connect negative cable to battery.

The structural dust cover is made of die cast aluminum and joins the lower half of the transmission bell housing to the engine.

The structural cover provides additional powertrain stiffness and reduces noise and vibration.

Scheme 592

Scheme 592: REMOVAL
Scheme 592: REMOVAL

Scheme 593

Scheme 593
Scheme 593

Scheme 594

Scheme 594
Scheme 594
  1. Loosen both the right and left engine mount bolts (3).
  2. Install the Engine Support Fixture 8534 (1) and connect the lifting adapter (2) to the water pump bolt stud (3). Do not use the third leg.
  3. Raise the engine to gain clearance for dust cover removal.
  4. Remove the bolts attaching the structural dust cover to the transmission and the oil pan.
  5. Remove the structural dust cover from the vehicle.

Scheme 595

Scheme 595
Scheme 595

Scheme 596

Scheme 596
Scheme 596
  1. Loosely install the 4 fasteners.
  2. Ensure the dust cover is flush to the oil pan and transmission.
  3. Tighten the bottom fastener to the transmission to 54 N.m (39 ft. lbs.).
  4. Tighten the top bolt to the Oil Pan to 54 N.m (39 ft. lbs.).
  5. Tighten the top bolt to the transmission to 54 N.m (39 ft. lbs.).
  6. Tighten the bottom bolt to the Oil Pan to 54 N.m (39 ft. lbs.).
  7. Lower the vehicle.
  8. Lower engine into the mounts using Engine Support Fixture 8534 (1).
  9. Remove the Engine Support Fixture 8534 (1).
  10. Raise the vehicle.
  11. Tighten the motor mount bolts (3).

Scheme 597

Scheme 597: REMOVAL
Scheme 597: REMOVAL
  1. Disconnect negative battery cable.
  2. Raise vehicle.
  3. Remove engine mount thru bolts.
  4. Raise engine using suitable jack.
  5. Remove engine mount bolts (2).
  6. Remove mount (1) from engine.
  1. Install the engine mount (1).
  2. Lower the engine.
  3. Install the thru bolts and nuts
  4. Lower vehicle.
  5. Connect negative battery cable.

Scheme 598

Scheme 598: 4X2
Scheme 598: 4X2
  1. Raise the vehicle on a hoist.
  2. Using a suitable jack, support transmission.
  3. Remove the crossmember.
  4. Remove the fasteners (1) from the transmission mount to transmission.
  5. Remove the mount (3).
  6. Remove the transmission mount bracket (2), if required.

Scheme 599

Scheme 599: 4X4
Scheme 599: 4X4
  1. Raise the vehicle on a hoist.
  2. Using a suitable jack, support transmission.
  3. Remove the crossmember.
  4. Remove the fasteners (2) from the transmission mount (1) to transmission.
  5. Remove the mount.