Crankshaft

INSPECTION AND REPAIR OF CRANKSHAFT






1. INSPECT CRANKSHAFT FOR RUNOUT
(a) Place the crankshaft on V-blocks.
(b) Using a dial gauge, measure the circle runout at the center journal.
Maximum circle runout: 0.06 mm (0.0024 in.)
If the circle runout is greater than maximum, replace the crankshaft.






2. INSPECT MAIN JOURNALS AND CRANK PINS
(a) Using a micrometer, measure the diameter of each main journal and crank pin.
Journal diameter:
STD size 59.730 - 59.740 mm (2.3516 - 2.3520 in.)
Crank pin diameter:
STD size 51.725 - 52.000 mm (2.0463 - 2.0472 in.)
1987-88 Model
Journal diameter:
STD size 59.994 - 60.012 mm (2.3620 - 2.3627 in.)
Undersize 0.25 59.730 - 59.740 mm (2.3516 - 2.3520 in.)
Crank pin diameter:
STD size 51.976 - 52.000 mm (2.0463 - 2.0472 in.)
Undersize 0.25 51.725 - 51.735 mm (2.0364 - 2.0368 in.)
1989-92 Model
If the diameter is not within specification, check the oil clearance. If necessary, grind or replace the crankshaft.
(b) Check each main journal and crank pin for taper and out-of-round as shown.
Maximum taper and out-of-round: 0.02 mm (0.0008 in.)
If taper or out-of-round is greater than maximum, grind or replace the crankshaft.
3. IF NECESSARY, GRIND AND HONE MAIN JOURNALS AND/OR CRANK PINS
Grind and hone the main journals and/or crank pins to the finished undersized diameter (See procedure in step 2). Install new main journal and/or crank pin undersized bearings.






INSPECTION AND REPAIR OF OIL PUMP DRIVE SHAFT, BEARINGS AND BUSHING
1. INSPECT OIL PUMP DRIVE SHAFT
(a) Using a micrometer, measure the journal diameter of pump drive shaft.
Standard journal diameter:
Front 40.959 - 40.975 mm (1.6126 - 1.6132 in.)
Rear 32.959 - 32.975 mm (1.2976 - 1.2982 in.)






(b) Using a cylinder gauge, measure the inside diameter of the pump drive shaft bearing.
Bearing inside diameter:
Front 41.000 - 41.025 mm (1.6142 - 1.6152 in.)
Rear 33.000 - 33.025 mm (1.2992 - 1.3002 in.)
(c) Subtract the journal diameter measurement from the bearing inside diameter measurement.
Standard oil clearance: 0.025 - 0.066 mm (0.0010 - 0.0026 in.)
Maximum oil clearance: 0.08 mm (0.0031 in.
If the clearance is greater than maximum, replace the bearing. If necessary, replace the drive shaft.






2. IF NECESSARY, REPLACE OIL PUMP DRIVE SHAFT BEARINGS
(a) Using SST, replace the No.1 bearing by using the No.2 bearing as a guide. SST 09215-00100 (09215-00120, 09215-00130, 09215-00140, 09215-00160, 09215-00210, 09215-00220)






(b) Using SST, replace the No.2 bearing by using the No.1 bearing as a guide.
SST 09215-00100 (09215-00120, 09215-00130, 09215-00140, 09215-00210, 09215-00220)






NOTICE: When inserting the bearings, align each oil hole.






3. INSPECT OIL PUMP DRIVE SHAFT THRUST CLEARANCE
Using a thickness gauge, measure the drive shaft thrust clearance between the thrust plate and collar.
Standard thrust clearance: 0.06-0.13 mm (0.0024 - 0.0051 in.)
Maximum thrust clearance: 0.30 mm (0.0118 in.)
If clearance is greater than maximum, replace the thrust plate and/or




collar.






(a) Using SST, remove the thrust plate and collar. SST 09950-20017.






(b) Install the thrust plate and collar in the direction as shown.
(c) Using a press, install the thrust plate and collar.






. IF NECESSARY, REPLACE OIL PUMP GUIDE BUSHING
(a) Drive out the bushing from the outer side of the block.






(b) Drive in the bushing from the inside of the block with a suitable tool.

HINT: The oil hole should be positioned toward the crankshaft side.

(c) Make sure the front mark of bushing should be positioned toward the front of block.


REPLACEMENT OF OIL SEALS

NOTE:There are two methods (A and B) of oil seals replacement.

1. REPLACE CRANKSHAFT FRONT OIL SEAL
A. If the timing case is removed from the cylinder block:
(a) Using a screwdriver and hammer, tap out the oil seal.






(b) Using SST and a hammer, tap in a new oil seal. SST 09214-60010 and 09506-35010.
(c) Apply MP grease to the oil seal lip.






B. If the timing case is installed to the cylinder block:
(a) Using SST, remove the oil seal. SST 09308-55010.






(b) Apply MP grease to a new oil seal lip.
(c) Using SST and a hammer, tap in the oil seal. SST 09214-60010 and 09506-35010.






2. REPLACE CRANKSHAFT REAR OIL SEAL
A. If the rear oil seal retainer is removed from the cylinder
block:
(a) Using a screwdriver and hammer, tap out the oil seal.






(b) Using SST and a hammer, tap in a new oil seal. SST 09223-41020.
(c) Apply MP grease to the oil seal lip.






B. If the rear oil seal retainer is installed to the cylinder block:
(a) Using a knife, cut off the lip of the oil seal as shown.
(b) Using a screwdriver, pry out the oil seal.

NOTICE: Wrap a piece of tape around the screwdriver tip, and place a shop rag so as not to damage the crankshaft.

(c) Check the oil seal lip contact surface of the crankshaft for cracks or damage.






(d) Apply MP grease to a new oil seal lip.
(e) Using SST and a hammer, tap in the oil seal. SST 09223-41020.






3. REPLACE OIL PUMP DRIVE SHAFT OIL SEAL
A. If the timing belt case is removed from the cylinder block:
(a) Using a screwdriver and hammer, tap out the oil seal.






(b) Using SST and a hammer, tap in a new oil seal. SST 09214-41010.
(c) Apply MP grease to the oil seal lip.






B. If the timing belt case is installed to the cylinder block:
(a) Using a knife, cut off the lip of the oil seal as shown.
(b) Using a screwdriver, pry out the oil seal.

NOTICE: Be careful not to damage the crankshaft. Tape the screwdriver tip.

(c) Check the oil seal lip contact surface of the pump drive shaft for cracks or damage.






(d) Apply MP grease to a new oil seal lip.
(e) Using SST and a hammer, tap in the oil seal. SST 09214-41010.