Service Manual

11-54

6EN0624

arrow mark

ENGINE  CYLINDER HEAD AND VALVE

9EN0477

paint marks

90100

6AE0299

6EN0625

Mount of Main Bearing Cap/ Main Bearing Bolt

(1) Mount the main bearing cap with the arrow mark thereof

directing to the side of timing toothed belt.

(2) Be sure the length of bolt is less than the limit value before

mounting the main bearing cap bolt. In case it is larger than the

limit value, change the bolt.

Limit value (A): 71.7 mm

(3) Coat the engine oil on the threaded part and seat face of the

bolt.

(4) Tighten the main bearing cap bolt with the torque of 25N.m as

per the specified sequence.

(5) Make paint mark on each bolt head.

(6) Screw down the paint mark at the position of the main bearing

cap by 90100forward from the paint mark on bolt.

(7) Tighten each bolt by 90100in the above specified se-

quence until the paint marks on the bolts are in alignment with

that on the main bearing cap.

Notice:

 If the screwing angle is less than 90, the tightening

property specified is cannot be guaranteed. Therefore,

attention should be paid to the screwing angle when

tightening.

 In case the nut is over tightened, (the screwing angle is

more than 100), loosen it thoroughly, and then re-

tighten it from the Step (1).

(8) Ensure the crankshaft can rotate smoothly after the main

bearing cap is well mounted, and inspect the axial clearance.

In case the axial clearance exceeds the application limit value,

change the No.3 crankshaft thrusting bearing.

Standard value; 0.050.18mm

Limit value: 0.25mm