Crankshaft

CRANKSHAFT INSPECTION
1. INSPECT CRANKSHAFT FOR CIRCLE RUNOUT
(a) Place the crankshaft on V-blocks.
(b) Using a dial indicator, measure the circle runout, as shown in the illustration.
Meximum 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.
Main journal diameter: 60.988 - 61.000 mm (2.4011 - 2.4016 in.)
Crank pin diameter: 52.992 - 53.000 mm (2.0863 - 2.0866 in.)
If the diameter is not as specified, check the oil clearance.
(See steps 3 and 6 in cylinder block disassembly) If necessary. 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 the taper and out-of-round is greater than maximum, replace the crankshaft.

CRANKSHAFT OIL SEALS REPLACEMENT

HINT: There are 2 methods (A and B) to replace the oil seal which are as follows:

1. REPLACE CRANKSHAFT FRONT OIL SEAL
A. If oil pump is removed from cylinder block:
(a) Using a screwdriver, pry out the oil seal.

(b) Using SST and a hammer, tap in a new oil seal until its surface is flush with the oil pump body edge. SST 09223-00010
(c) Apply MP grease to the oil seal lip.

B. If oil pump is installed to the cylinder block:
(a) Using a knife. cut off the oil seal lip.
(b) Using a screwdriver, pry out the oil seal. NOTICE: Be careful not to damage the crankshaft. Tape the screwdriver tip.

(c) Apply MP grease to a new oil seal lip.
(d) Using SST and a hammer, tap in the oil seal until its surface is flush with the oil pump body edge. SST 09223-00010

2. REPLACE CRANKSHAFT REAR OIL SEAL
A. If rear oil seal retainer is removed from 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 until its surface is flush with the rear oil seal retainer edge. SST 09223-15030,09608-30022 (09608-05010)
(c) Apply MP grease to the oil seal lip.

B. If rear oil seal retainer is installed to cylinder block:
(a) Using a knife, cut off the oil seal lip.
(b) Using a screwdriver, pry out the oil seal. NOTICE: Be careful not to damage the crankshaft. Tape the screwdriver tip.

(c) Apply MP grease to a new oil seal lip.
(d) Using SST and a hammer, tap in the oil seal until its surface is flush with the rear oil seal retainer edge. SST 09223-15030,09608-30022 (09608-05010)

PISTON AND CONNECTING ROD ASSEMBLY
1. ASSEMBLE PISTON AND CONNECTING ROD
(a) Using a small screwdriver, install a new snap ring at one end of the piston pin hole.

HINT: Be sure that end gap of the snap ring is not aligned with the pin hole cutout portion of the piston.

(b) Gradually heat the piston to about 60°C (140° F).

(c) Coat the piston pin with engine oil.
(d) Align the front marks of the piston and connecting rod, and push in the piston pin with your thumb.
(e) Using a small screwdriver, install a new snap ring on the other end of the piston pin hole.

HINT: Be sure that end gap of the snap ring is not aligned with the pin hole cutout portion of the piston.

2. INSTALL PISTON RINGS
(a) Install the oil ring expander and 2 side rails by hand.
(b) Using a piston ring expander, install the 2 compression rings with the code mark facing upward.
Code mark:
No.1 1R or T
No.2 2R or 2T

3. INSTALL BEARINGS
(a) bearing claw with the groove of the connecting rod or connecting cap.
(b) Install the bearings in the connecting rod and connecting rod cap.